Symptoms of a Bad Idle Air Control Valve (IAC) 

Thank you for making this video. I drove 30 miles with bad IAC. Ended up not hitting a single red light so I had my foot on the gas the whole way.

Wow. This is a very good video. My car is exhibiting the very symptoms you describe. It runs fine going down the highway, but as soon as your press the clutch in, its RPMs drop and it stalls out. It also seems to occasionally idle at a very high or sometimes erratic RPM. It has been setting for a while in the garage. This will be the first thing I take a look at along with any air leaks. Thank you!

2006 dodge Durango 5.7 hemi v8. 115,000 got it 4,000 less. Stalling on low idle/ traffic lights, especially when making turns that doesn’t require giving gas ( or throttle) I can wrench a bit and have replaced, recently enough quite a bit of the exhaust system in general still bad ass truck. Cat delete Too many minor fixes replacing and cleaning to list but appreciate this video bc it’s helping me to narrow down before I get too crazy trying to get the air fuel ratio tuned. She was slightly neglected but still a beast. Thanks this helped tons. I would appreciate a response from anyone and I can elaborate further as I fix

Great Video! I have a 2006 Jeep Grand Cherokee and recently put new heads on due to bad head gasket, also new timing chain kit along with brand new OEM catalytic converters. When i was taking the Cruise cabe off the throttle body i broke the nub that the cable clipped to so i got a used throttle body and rebuilt mine. The issue i'm having is sporadic idling and when going down the road i have to mash the accelerator to get it going. Stops are worse trying to get going. I have replaced the IAC and that did nothing , The data on my scanner is saying the IAC has high input voltage. I was told with me rebuilding that throttle body it is probably out of spec, So i ordered a new throttle body with both new sensors IAC and TPS . I installed the New throttle body last night and its still the same running ruff and still have High voltage at IAC. Can anyone lead me too what might be causing this High voltage? I can't find anything besides replacing the IAC. Instructions with the NEW Throttle body say's the IAC needs Idle speed relearn and i cant find anything for my jeep how to do this. Also as last night im throwing a code of UO41, Witch i just watched your video on that before writing this book. Thanks for that as well. Any help would be appreciated. Thanks

Great video and explanations! Nice and direct

Thanks sir

Its the same issue with mates Toyota hilux. Prob mid 80's. Trayback . I pulled it off and cleaned it. Good for 2 days then back to over reving, about 2100. It is the idle sensor, electric that controls a magnet i think to turn the shaft inside. Ive minipulated the shaft and confirms its faulty. But only the magnet! End where it has a elec plug.

Good video, well done sir!! I subscribed to ya!!

Great video, thanks. How do I differentiate between malfunctioning Idle air contole valve and leaking air please?

Thank you bro that's good information to know

I have a creta 2017 which doesn't start unless I push the gas paddle. Rarely stalls 2-3 min after start and it's usually when stopped at traffic lights. The throttle was cleaned, changed sparks and air filter, still the issue remains (no error codes). It happens when the car is parked for like +8hours. What could be the issue?

Have all the symptoms, but the engine code is a misfire p0300 code and a misfire code for all cylinders.. already checked all the usual culprits, the iac and egr are among the last to check besides possible vaccuum leak..

2016 cryshler 200 2.4 once you have it in reverse engine stalls,replace motor mount.transmission mount same thing did tuneup spark plugs coils,pcv,clean throttle body

MY 2004 TOWN CAR,STARTED TIS RECENTLY,I HAD CHANGE THE IACV A FEW MONTHS AGO,FOR A NISE COMING FORM MY AIR BOX,VIBRATING,HIGH PITCHED NOISE,CHANGEIT,WENT AWAY,NOW THE FAST IDLE AT COLD START,NO LONGER HAPPENS,JUST VERY LOW IDE,I HAVE TO PEDAL TO KEEP RUNNING,AFTER WARMING UP,DOES BETTER,STILL A LITTLE MISS FEELING,BUT RUNS GOOD WHILE DRIVING,SHOULD I CHANGE THE IDLE AIR CONTROL VALVE AGAIN? I DID BUY FROM E-BAY,IT WAS CHEAPER,WAY CHEAPER,THANKS,APPRECIATE YOUR THOUGHTS ON THIS, I GET NO CODES OR ENGINE LIGHT,CLEANED THE THOTTLR BODY AND THE MAF SENOR, NOT MUCH CHANGE AND STILL NO ATOUMATIC HIGHER IDLE AT COLD START.

Thank you

Good video! I have a 2015 Nissan rogue, runs great first 10 minutes or so , but vibration starts and is present at stops, and at idle. I Cleaned up throttle body, mass airflow sensor, new filter, new pvc , no cracks in any hoses, new engine mounts, new 02 sensor, pre cat, no codes, fuel cleaner in , fuel trims are good … …🤔.. any thoughts?

Does it suppose to leak or vacuum air thru the idle control valve ? I did a smoke test and smoke came out of the control valve

What happen if the iacv hose line has tiny leak ?

Mine didn’t have a cel when idling as soon as I hit high rpm the cel comes on. Now it comes on as soon as I start the engine. It’s just got worse

Hi, my name is Fran I have a 2008 Saturn Arua XR 3.6 with Idle problems changed the throttle body and checked for a vacuum leak checked some wiring still the same problem. What's next? Changed the throttle body because had a low-speed warning light.

Mine does those things but also after it's warmed up when I put it in gear it dirs

So i was getting shaking when idling so i cleaned my throttle body and put in a new aic valve and my problems started. Was the new one i put in faulty? I bought it at autozone. Should I go and demand another one?

I’m having the idle problems bad but I’m having codes like p052c cold start and other codes like camshaft/crankshaft correlation sensor and timing codes, could the AIC or throttle body cause such things??

Hey bro. My car is 2006 honda civic coupe 1.8… does it have an IAC valve or its called purge solenoid valve??…coz i cleaned my throttle body using cr throttle body cleaner. After that the idle is too high and fluctuating and the engine light turns on. I reset it manually by gaking the negative wire on the battery. and by the way i scanned it and the code is po505 .. doni have to replace the purge valve that is attached to the throttle body???

What if when you step on the gas and it puts

What about the engine nice and hot and push on the pedal while in park an it idles high like 3 rpm’s then after 10 sec or so it starts to idle down to normal is that a sign of bad iac too ?? Code shows p0507

Great thank you

IAC vs bad TPS thought ?

My toyota stalls while am driving up a hill

Og ghost cam

Fuel pump

Every time he says "idle air control valve" take a shot! 🫣🤣