Lean misfire will show up as elevated hydrocarbon (HC) readings in the exhaust, which may be enough to cause a vehicle to fail an emissions test. lets let the facts be known= when the uppipe was installed I did the bolt mod to plug the o2 sensor, and did the resistors, however the guy who installed the pipe cut the exhaust temperature sensor. Quite a bit of carbon comes out of the exhaust as well. ^ Rough running at various RPM ^ Rough idle. Hi there ladies and gents all new to posting on the forum here, but I have and idle problem that has puzzled me and I need your help out there. Noisy Valve Lifters!?!?!? a. A choke that fails to open or sticks shut during warm engine running will cause a constant misfire and rough idle. The noise level of the valve mechanism cannot be properly judged where the engine is below operating temperature when the hood is raise, or when the valve rocker arm covers are removed. It is not necessary to remove the TB from the car to do this, but it might help to get a few other things out of the way. I come to a light and feel rough idle, then see white smoke. Engine Clicking And Tapping Noises problem of the 2012 Ford F-150 23 Failure Date: 01/06/2015 When there was snow and ice on the highways I put my truck in 4 wheel drive and when turned back into 2 wheel drive I began to notice a grinding and vibration noise that occurred when turning. [Archive] Rough idle on cold start ups E39 (1997 A common source of trouble causing low RPM sluggishness and accompanied by a clicking sound from the engine bay. I've been noticing "what appears to be" a rough idle in the engine. It's perhaps like the tell-tale sign of a burnt valve, but the engine and power seem to be pretty good. Yesterday clearing snow runs rough on idle, sputters and pops on full throttle. Appears a fowled plug or plug(s) on the passenger side was the root-cause. This is the situation. There is a distinct miss that sounds like a popping sound in the exhaust and engine runs roughly. well, i changed the spark plugs, wires, fuel filter, used seafoam in booster line, checked for arcing at night from misfire - nothing seen, and i still have a rough idle, slight hesitation, and now my exhaust is popping quite a bit. 7-7-12 Test drive start up revealed an amazing sucking noise from the intake that also had some rough idle associated with it. I noticed that on some cold starts my idle is steady at 1000 RPM and no clicking sound. I was only a block from home and the next day my husband drove it to our dealer which is only 2 miles from our home. A valve adjustment usually fixes that, which is done with feeler guages. 1994 mustang idle a little rough, no power, slight missfire sound. :lol: Took it to small town **** hole dodge thats close to work and of coarse they could not duplicate problem even though it was doing it 2 min after I left the dealer. I let it run for about two minutes and the sound never went away completely but did get quieter. My 92 Dakota with 157K miles idles as smoothly as a new car. * Oil is fine, coolant is clean * No smoke from. The car is completely stock. Jump to Latest I get an odd clicking noise in the interior. The problem continues to be rough idle, popping and backfiring. After this the idle becomes lumpy and rough, when pulling away in low revs there is very slight hesitation but at high revs there is no problem and the car accelerates very well. They are not supposed to be open at idle. I am seeing tons of posts about cyl 4 misfires and rough idling. Does it sound like a muffler problem? I just had the muffler replaced 2 months ago and it's under warranty so I'm hoping that's what it is. but that holds for any big lumpy cam. Hello all! My name is Bryan and I am new to the site. One check is after the engine has. Problem: The cars idle is a bit rough/shaky at idle, but the RPMs are always steady at I would say a 800 range or so. Ever hear of an injector getting loud? thanks for any thoughts or ideas. The noise is usually more noticeable when the engine is warm. Noticeable inside and out of the car. i take off 1st gear it sounds good well ok. Left Field POTM CF Mike Tauchman (L) - 82 - 5. I'm having a couple small issues with my recently purchased F12X. It seems to run slightly better with choke on, but that's not saying much. I have fresh fuel, the carbs had carb kits put in 2 years ago, plugs were new last spring and I only used the boat 5 days on water, the fuel lines are in good shape. It happens also when car is stopped at stop light. Learn about this problem, why it occurs, and how to fix it. Then clean your MAF, that also could explain a rough idle. Never had a problem till this year. rough idle plus clicking noise: Hi Folk since I had to jump start then replace the battery on my 2008 mk3 now I have rough idle also when I switch off there is a clicking noise coming from engine bay. The car also vibrates while idling. Boat engines have the same operating principles as do land vehicle engines, but having trouble with your boat engine can leave you and your family in a precarious predicament. i have straight pipe and one day i just noticed this popping/airy/lopey sound coming from the pipe at idle. Clicking noise would be caused by injector mechanism not moving smoothly (spring sticking, disc hanging up, etc. 484 mopar cam has a nice sounding idle too and should be better on the street on a lower compresision engine with fewer mods. My 2004 BMW 325i has a very rough idle. So I don't know if this is normal. Sounds like there's no input on any of the passenger side fuel injectors! I then pulled a connector off the left side fuel injector and huge change in engine RPM's. The problem usually will disappear for a while (weeks) before it comes back again. Please help. No CEL? Rough idle is usually associated with a misfire or bad motor mounts or a dirty throttle body which is especially noticeable with the AC on as RPMs drop. things i have done so far *changed the intake heater solenoid, since it doesnt knock as bad in warmer weather so thought it might be that. Still have the same rough idle and stumbling. It runs smooth after 2nd gear and starts easy. At idle you can occasionally hear a pop noise from the exhaust. After a rough winter all 4 wheels had started to. A popping sound could be from: A dirty air filter. MUST SEE Ford F 150 Stalling or Not Running Fix P1233. I recently noticed that there's a rattling sound when the car in in idle (800RPM) but it disappear when I rev it up to higher RPM or while driving. 06 that just hit 144k miles. The car is completely stock. Engine knocks during idle? In the past week, my engine has developed a knocking sound while idling. I noticed it was running rough so I parked. Figured I'd share this since I've seen a good amount of people here complain about a rough idle. Sputter, rough idle, and fuel odor Since then, it has become worse, and now there is the additional symptom of a STRONG fuel odor. I took it down the road for the first time and drove it for about an hour. I popped the hood and listened. Recently the exhaust has started to make a popping noise at idle. Rough idle keeps idling after turning off But it sounds like it keeps going for a moment or two after shut down and finishes with a little "shimmy". Bruce Recently returned from long trip and our 87 Coachmen started running rough under load. So I have noticed something that seems to be affected by cold starts in colder weather. Ok, second test a few hours later gave me what I wanted. The idle will also surge high in the rpm and dip back down. The problem may occur when the engine is hot or cold or when you are low on fuel. Hey guys, my truck just recently started getting rough at idle and hearing a loud ticking light rapping noise. If it were a rocker arm, it wouldnt be a knock sound, more a loud tick, and it would be all the time no matter if in gear or park, or the rpms for it would have to be a lifter for it to go away if. If we raise the RPMs the popping get worst with occasional loud pops. i have a 2008 ranger xlt and the air intake is stock so it should be fine but when in idle it makes a popping noise that comes through the air intake. Symptom: The engine knocks or ticks at idle. The problem continues to be rough idle, popping and backfiring. Hyundai Sonata Rough Idle Due to Faulty EGR Switching Valve - 153 reports. I have replaced the MAF sensor and had vacuum leaks checked. The check engine light never came on?. A popping sound coming from your engine can be bad news. sporadic idle and rough sound when i start in the morning it runs 100%, as the engine warms to normal operating range is when i hear it running rough. 509s idle pretty rough, but i hear they can be a turkey without decent compression, gearing etc. My other issue is at idle there is a very loud constant knock sound coming from underneath the vehicle. donno if that helps diagnose problem any but just another piece to the puzzle. Discussion. Also clean the throttlebody. But the sound seems to be coming from the front of the car. When you suddenly close the throttle, the incoming air is choked off and the closed throttle also causes the bike to return to idle on the very lean idle circuit. 2011 ford explorer v6 xlt Rough idle and clicking noise at idle what could be ran injector cleaner thru and no - Ford Cars & Trucks question. Deprecated: Function create_function() is deprecated in /www/wwwroot/autobreeding. A popping sound coming from your engine can be bad news. Hello all! My name is Bryan and I am new to the site. They put a foam sleeve on it to try and muffle the noise. Same issue, popping noise in engine, rough vibration on idle. Replace 3 motor mounts (at the shop) - except the rear 2. I had a 2000 Outback (230k). the hiss is the noise created when air travels around that 90 degree bend. I don't know what this is called exactly. I had taken out the ETM and cleaned it as well as replacing the PCV system components. I took a few video's to see if anyone has any rough idea's of any common problems in the 4th Gen 4Runner?. Under load runs great, no sounds at all. at idle though, it has this random popping, almost like a back fire, accompanied by a quick puff of smoke out of the starboard side of the motor. I have replaced the MAF sensor and had vacuum leaks checked. This would make it idle rough or fast and the popping noise could be the unburned fuel igniting in the exhaust system on the hotter than normal exhaust manifold. Starting getting a rough idle with occasional stalling about a month ago. I put a new coil since then and thats it. i dont really notice it after i let off. While exhaust system popping may be considered normal, it is certainly made worse by an overly lean idle circuit. I had a problem with a rough idle and changed the. replaced fuel pump,fuel filter,plugs and wires no i - Saturn SL question. Jump to Latest I get an odd clicking noise in the interior. after i did the job the car was running fine. 5 V6 in our last 2010 Toyota ran like a sewing machine. Quite a bit of carbon comes out of the exhaust as well. Re: Smooth Idle, but popping/Clicking noise. If it is leaking then try spraying some water with a mister around the connections and hose. Under load runs great, no sounds at all. After this the idle becomes lumpy and rough, when pulling away in low revs there is very slight hesitation but at high revs there is no problem and the car accelerates very well. this morning it started fine, no noise, engine light still on, within a few minutes of driving a distinct knocking noise could be heard, really started running rough. I have had an irregular popping/thumping noise in the intake area for quite some time. I had a 2000 Outback (230k). After ten seconds or so, it dies out and emits a big hiss (sounds like someone is sighing, but worse). It kind of sputters when it idles and sounds like it switches back and forth from normal idling to bogged down idling. Recently it started to pop and idle rough but when I have it on WOT (wide open throttle ) it seems to run fine. I can hear the engine "laboring" at one spot and it lunges forward at that exact spot. This tick also isn't dangerous for your engine, but should be fixed as soon as possible to keep exhaust gases where they should be. 1996 850 Turbo, Rough idle, new PCV didn't fix it Post by futureboycolin » 29 Sep 2013, I'll upload a video of the engine idle and exhaust sound shortly. So right now my car is in a state of disarray. The popping you were hearing is referred to as a "lean pop"this means that there is. Just wanted to share my experiences: About 10% of the time my Idle would start to surge between 200 and 1200 rpm while sitting at a light with the foot on the brake. I would also like to know if the EP series engine is in my car or is it a new (revised series) I can't find this info anywhere. Use a spray bottle with water to spray around the manifold gasket while the engine is running. So I don't know if this is normal. Royalty free stock sound clip for personal, commercial, production use 1971 Ford LTD, Car, Crank Engine, Rough Start, Idle, Engine Dies, Various Versions. Rough idle and popping in exhaust The bike has always had a rough idle but you used to be able to start it without the choke on a summer day for the first time and it would idle real low til it warmed up. The goal is the predict the values of a particular target variable (labels). Very rough idle with a repetitive cycle that is smooth for a couple of seconds then misses badly, occasionally stalling. I took a few video's to see if anyone has any rough idea's of any common problems in the 4th Gen 4Runner?. Sue, I'm not sure about your engine size, but the 3. And it's leaned way out for all ground ops. Also at idle in park there is a pop or misfire sound coming from the tail pipes. had plenty of power. My Engine is Shaking, and the Car Hesitates. 6 in 12 are 100k plugs, is the 11s different? The rough idle is probably the throttle body needs cleaning. After a rough winter all 4 wheels had started to. Yesterday noticed a clicking noise and rough idle. At idle you can occasionally hear a pop noise from the exhaust. Hi all, back again with yet another issue, but hey what are DSM's for :cry: Quick scenario (sorry, it's the best way I know how to describe. The car was only driven between 7000 and 10000 feet in elevation. Re: Engine Running Rough and Backfiring Normally, spitting out the carb is said to be due to a lean mixture and popping out the exhaust takes place when the mixture is too rich. After a rough winter all 4 wheels had started to. It sounds like the car is struggling to breathe, and the noise is coming from inside the passenger fender I believe. its a large diameter plastic hose that is turning 90 degrees. You can also see the RPM's moving up and down (Check engine light is NOT being displayed). RPMs hover in the 500-600 range in Drive and after shifting in N or P, its smooth. got to work, noticed that mpgs had dropped by over 3 in just the. When a cold start is initiated it sounds like it's having a hard time trying to idle. I bought a used 2007 9-3 aero this summer and it's turned out to be something of a lemon It's got a few bad symptoms, but the cluster of symptoms that I feel may be all related and most urgent, I will describe here: Current Symptoms, and past: -a really bad rough idle every few start ups. I very much doubt it is a bent rod, that sounds abit extreme I must say and if it was it would be rough the more the revs increase not to mention very tappy. Starting getting a rough idle with occasional stalling about a month ago. i have a 2005 ford escape with a 3. the popping noise would be called a front fire. i dont really notice it after i let off. I keep hearing this rattling sound from underneath my Jetta (2002 TDI) when I am idling. 01 CRV developed a clicking / tapping sound comming from rear passenger side. Such symptoms have to be checked out, determining which vehicle components might be at fault through a process of elimination. I had the timing belt checked by 2 people to make sure its timed right. Having a problem with my 1990(+_) 200 Black Max, rough idle and skipping when I attempt to plane. Why Is My Engine Knocking When My Car Is Idle? When an engine knocks, one of the likely causes is low-quality fuel. general vibrations while driving might be causing it to drop its current. Rough Idle & Shimmy – the Ultimate Guide! by Steve Wilson (Including information about Catalytic Converters) Thanks to Johan for examples/pictures on his website – to follow the links hold down CTRL and press the link: 1) Spark plugs, plug wires, rotor & ignition coils - Clean and inspect. My car runs very rough at idle, worse when in gear and when it is cold outside. Replied by barneyb on topic Exhaust popping/pulsing at idle Just for the record, an engine with a burned valve will make the same noise but not irregular noise like this engine was doing. sometime it is hard running on first gear and sometime it seems smooth. Hyundai Sonata Rough Idle Due to Faulty EGR Switching Valve - 153 reports. 5k RPM, I can hear a clicking/ticking noise coming from the front passenger side of the engine. I am aware of a valve cover leak but it is because one stud is stripped. When I hit about 3000 rpm it smoothes out. Also inpected boot for cracks. Location on driver's side. 2005 Ford F150 4. I know there is a procedure on a Mack whereby you can reset the engine idle speed within a range from 500 to 750 RPM, in order to get a smoother idle. However, now when I put the car in the 'on' position there is an endless high buzzer or beep sound from the engine and after 20 seconds or so some clicking. Engine Clicking And Tapping Noises Problems of Chrysler 300 but the rough idle was still present. All symptoms seem to go away when the car is shut off and restarted, but only temporary. Thump/pop or knock coming from throttle body Taurus The description of cold stalling and rough idle sounds like either the IAC, the EGR, or a vacuum leak. Sounds like. 7volts at idle, and bank two was reading 3. 1996 850 Turbo, Rough idle, new PCV didn't fix it Post by futureboycolin » 29 Sep 2013, I'll upload a video of the engine idle and exhaust sound shortly. Lots of airplanes pop a little for a bit when pulling power off - P-51s, radials, Pitts'. Hello everyone. Has 200 miles on it now, but has do e it since 0. 0 and 2004 mystichrome cobra), Anyways it also makes a popping sound which my mechanic says is a LEAN MISFIRE, so i got some suggestions here and the main consensus was too replace the EGR and the TPS sensor, anyone else have any. It sounds like the timing chain is about to fly out of the engine. One check is after the engine has. At first I thought my truck backfired. Learn about this problem, why it occurs, and how to fix it. The backfire noise only happens when you put your foot on the gas fairly heavy. My RT gets a very rough idle intermittently but very often when warm and the ac is running. reasons why changed= when riding around in no wake zones (3~3. Yesterday clearing snow runs rough on idle, sputters and pops on full throttle. What is the problem? Could it be a stuck valve?. i started freaking as it when on for a few weeks. Idle problems may originate in a worn out component, a. I found a TSB on this particular issue. At idle I get a clicking noise it's relatively fast, consistent. It will have trouble idling under 2000 rpm. Seemed like all the right things to do while I was in their with the intake manifold out of the way. I noticed that on some cold starts my idle is steady at 1000 RPM and no clicking sound. i have a 87 325e that i put a new headgasket due to when i purchased needed. The noise that sounds like a blowing exhaust is normal. Under load runs great, no sounds at all. Have looked at various posts on discussion threads and am now more confused. 1996 850 Turbo, Rough idle, new PCV didn't fix it Post by futureboycolin » 29 Sep 2013, I'll upload a video of the engine idle and exhaust sound shortly. My truck is reading a misfire in cylinder 2. clicking noise, no power, rough idle, gas smell? I had an up pipe installed last week and today my car went haywire. However, should a tune-up not solve the noise issue, it's time to troubleshoot the sound. This message can be closed by clicking the X in the top right corner. rough idle, studders, running rich and horrible MPG. There is also a popping sound coming from the engine when under light acceleration and sometimes at idle. Rough idle with several engine codes popping up. Re: Engine missing - Making popping sound ? Ok, I will turn the idle back up a hair. Loudest when at idle. i have straight pipe and one day i just noticed this popping/airy/lopey sound coming from the pipe at idle. The change in fuel coincides with deposits being dislodged. I'm guessing the torque converter or transmission. Very rough idle could be a vacuum issue of PCV on it's way out. Popping sound coming from the intake manifold area/rough idle at start up/video at night BMW E46 330CI. You may have to register before you can post: click the register link above to proceed. The light turned green and when I accelerated, there was a popping sound from the engine. Quite a bit of carbon comes out of the exhaust as well. No vibrations. Hello everyone. The problem usually will disappear for a while (weeks) before it comes back again. Rough idle Popping (backfiring?) during idle Whether in gear or not, rough running, stuttering, and severe lack of power While riding, once I advance past 1/4 throttle or so, the bike loses almost all power - sputtering and popping like a lack of fuel Will not accelerate past 60-65mph Troubleshooting I have done so far:. Any help would be greatly appreciated. It has recently developed a rough idle when parked and stopped. Also, if you hold the rpms around 2-3k you can hear and feel the engine miss-firing. Runs fine with a bit of throttle or at higher rpm in a load, but under no load at light throttle, is I'd very choppy, almost missing, and honestly don't idle really smooth. A black/grey rough burned. I already removed the two T40 bolts (upper right and lower. Hello to all. The rough idling and vibration is another thing. Hard to explain the noise. Noise is still there after the first 100 miles again. This is my second thread on this but it's gotten worse, at idle my K&N pops and rattles pretty badly, seems worse when the a/c compressor kicks on Intake popping and rough. It sounds like the car is struggling to breathe, and the noise is coming from inside the passenger fender I believe. I swapped the coil from 2 with 4 and #2 still read misfire. I have had an irregular popping/thumping noise in the intake area for quite some time. I'm having a couple small issues with my recently purchased F12X. this morning it started fine, no noise, engine light still on, within a few minutes of driving a distinct knocking noise could be heard, really started running rough. 0L 6c Auto trans ranger that just got a new Mass Air Flow Sensor, Flue Pump, Battery, and rear brake line. Hey guys, I have a bone stock 2004. If you suddenly hear a loud pop or bang in the engine area, pull over to the side of the road and check it out. Clicking noise in engine on idle? My 06 Ford escape when idleing makes like a quite clicking noise in the engine , and if I put it in drive it stops but the car idles rough like it stays at. so I lost two sensors. I can only notice it when its in gear and i am at a stop. Hi there ladies and gents all new to posting on the forum here, but I have and idle problem that has puzzled me and I need your help out there. Yes the vibration / rough idle remains whether hot or cold. Fuel of low quality or a low octane rating results in many different problems in the engine. A Vacuum leak around your engines intake manifold can cause a lot of different symptoms to your engine like rough idle or rough acceleration. its a three cylinder, tri-carb, 2-stroke. It does not matter whether is cold or warm start. Not sure if this is common with other people's Pacificas but ours seems to have a rough idle. By comparison to several jobs I have done, this was easily accomplished. When the idle bounces up and down, I will switch off the air conditioning for a while and turn it on again. I'm wondering what might be causing the poor gas mileage, and the rough idle. 0 its making a popping noise through air cleaner and plug number 2 and 4 are getting covered in fuel car does run rough but when your raise the idle it smoothes out …. There is a thing which causes the engine to idle up when the AC is turned on it seems this isn't working correctly. Around the same time I started experiencing some problems with a rough idle. I am out of ideas hopefully someone here has a few. 8 is known for the intake manifold going bad. ?? Once in a while it will die when it pops. All, I tried tuning the throttle bodies on my new to me R1150RT. Thump/pop or knock coming from throttle body Taurus The description of cold stalling and rough idle sounds like either the IAC, the EGR, or a vacuum leak. general vibrations while driving might be causing it to drop its current. Within about 50 miles of home topped off (half tank) with 89 octane to see if it would help. It is not necessary to remove the TB from the car to do this, but it might help to get a few other things out of the way. The rough idle is intermittent along with a popping noise that sounds like it is a backfire from the intake. Why do I have a Rough idle – Ford Ford has issued a service bulletin to address a rough idle problem on 2009 Ford Escape and Mercury Mariner vehicles with the 2. pop the hood, remove each of the. after i did the job the car was running fine. Unfortunately it pulls to the right, dealership said they would do an alignment for me in a few days. Mine was rapping and thought is was the bottom end of the motor. Now it is rough on idle and has a light popping , cracking sound through the exhaust. does anyone know what this can be? its done 133000 k's and its due for a service, its sounds like it needs a tinming belt from what i can gather. At idling a popping sound will come out of the air intake/air box. I keep hearing this rattling sound from underneath my Jetta (2002 TDI) when I am idling. It almost sounds like a quite loud cricket continually chirping. Very easy takes a couple hours the first time, less once you've done it. The backfire noise only happens when you put your foot on the gas fairly heavy. This would make it idle rough or fast and the popping noise could be the unburned fuel igniting in the exhaust. Inside is a type of mesh cloth used for filtering. Hi all, Hopefully someone can help me with my problem. There are 16970 observable variables and NO actionable varia. No rough idle! Removed plugs from all 6 coils, one at a time and each caused the rough idle until re-plugged, and normal idle returned! Went to test drive the car, initially putting in reverse to back out of driveway. How To Find A Vacuum Leak - EricTheCarGuy. Also developed a popping sound from the exhaust at idle No codes are being thrown Only mods are LG Longtubes with rear 02 sensors deleted (Done 3 yrs ago). Figured I'd share this since I've seen a good amount of people here complain about a rough idle. Some 2004-2010 F-150, 2005-2010 F-Super Duty 250/350, 2005-2013 Expedition, Navigator and 2006-2008 Mark LT vehicles equipped with 5. Hard to explain the noise. A misfire will cause the engine to momentarily stumble, or lose rpms, and then regain its normal engine speed. When the car stands on idle after driving its an popping sound from the airbox and cai It sounds almost like an 2 stroker MX on idle (but far from that loud, but I can hear it clear with the hood closed) Anyone has the same or know why it does that. I popped the hood and listened. I took it down the road for the first time and drove it for about an hour. the engine runs great at everything but idle. its a large diameter plastic hose that is turning 90 degrees. Whether your car has clunks, creeks, crunching, clicking or whining, we'll walk you through each one of these noises and tell you what they mean for your vehicle and what you need to do to take care of the problem. i have a 2005 ford escape with a 3. In order to understand this, it is important to know that a catalytic converter operates at a thousand degrees or more. It doesn't seem like it is affecting anything cause it drives fine and revs really fast. If your a do it yourself-er check vids on YouTube. I bought my Altima about a year ago and always had a rough idle, it's not so bad now but I feel it and it just bothers me. it is obvious this I4 sea engine had a lot of problems the eng is in 3 different gm vehicle the Chevy. I have a '06 Cayman S that I only take out on nice days and is garaged otherwise. I have fresh fuel, the carbs had carb kits put in 2 years ago, plugs were new last spring and I only used the boat 5 days on water, the fuel lines are in good shape. The car started up with ease but idle was very rough and there was a loud, inconsistent clicking noise under the hood behind the drivers side headlight, I assume the 2 situations are related? If so, what's the solution? I found lots of rough idle posts but nothing that also discussed the clicking noise. Components in the fuel, ignition, emission and other systems should work correctly. General Tech - Rough Idle/popping noise in carb - Hey all,my last post I could not get my 93 Chevy van started,well I messed with the timing a bit and got it started. 0 and 2004 mystichrome cobra), Anyways it also makes a popping sound which my mechanic says is a LEAN MISFIRE, so i got some suggestions here and the main consensus was too replace the EGR and the TPS sensor, anyone else have any. This is my second thread on this but it's gotten worse, at idle my K&N pops and rattles pretty badly, seems worse when the a/c compressor kicks on Intake popping and rough. sporadic idle and rough sound when i start in the morning it runs 100%, as the engine warms to normal operating range is when i hear it running rough. it would also do it when i was on a decel while driving (engine under no load). Have you seen any occurances where worn valve. There is also a popping sound coming from the engine when under light acceleration and sometimes at idle. I have the [I]exact[I] same clicking noise in my engine! I have an '03 Envoy SLE. my buddy tells me its running lean as well (possible cause) any idea's anyone. If I give it any gas, the knocking sound goes away. Also, it seems to be inconsistent. Now it has a rough idle all the time and is becoming a safety hazard while at stop lights and in traffic. Seems like when I start to adjust it like the manual says, to get the best idle, the engine starts to run rough, so I shut it down then restart it and it seams to idle better, but the popping sound is still their. It has a rough idle and when I get on the gas to just accelerate (the harder i get on the gas the louder the pop) i get this popping sound coming from my intake. It started happening after about 200 hundred are so miles, subtle at first, and has gotten more noticeable over the weeks. Jump to Latest Follow 1 - 2 of 2 Posts Hi all! My 2005 Colorado passenger side window makes a loud Popping sound if you don't stop holding the button. 2010 navigator Rough idle shaking and sound. rough idle in gear (Chevy) If this is your first visit, be sure to check out the FAQ by clicking the link above. The Symptom:  Engine hesitates, and a popping sound comes from the engine. com ® is an online automotive complaint resource that uses graphs to show automotive defect patterns, based on complaint data submitted by visitors to the. Hey guys I bought a 92 sc it has a rough idle but it’s not throwing a code and the brake pedal is super hard sometimes but sometimes it’s normal the abs light also comes on when I hit the pedal totally stumped any advice helps thanks. So had a trusted friend mechanic come over and look at it.