Idle problem I have a 06 A3 (non-S-Line). I am at 35K on mileage, and noticed that at idle, my engine will slowly rev up without my foot on the accelerator, and drop. I would have to pump my accelerator to stop it. Then it will do it again... the check engine did come on (solid, not flashing) but then again, the check engine comes on occasionally for no reason anyway. I never had this problem. Any suggestions? EVERYTHING is OEM. No aftermarket parts. Thanks, Rich
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Feb 5, 2011 - Uploaded by RickyTomatoes
[FIXED] Audi A4 RPM Idle Problem .... whole lot more and sometime i can even feel like the engine is just gonna die. sometimes it does it some other times it does ... Our cars shouldidle at 900. ... AUDI A3 1.6 IDLE PROBLEM!
RedditSep 3, 2014 - When getting into first gear, I bring the revs up to around 2000 RPM right ... Being able to get going without any throttle is fairly dependent on car size and ...Thats how I have a 300,000 kay clutch still on my audi with no slippage. ... Clutches ought to last well over 100,000 miles if they are not abused, and ...
Well, 2 things come to mind. (1) There could be a dirty gas filter not letting the engine receive enough gas to idle and certainly not enough to rev to any rpm. (2) Depending on the mileage, the catalytic converter could be partially or completely stopped up, not letting the engine expel exhaust gas and subsequently causing unburned fuel to bog the engine down.Lastly, again depending on mileage, the oxygen sensors could be needing to be replaced because of exhaust fouling. Hope this helps.
It sounds like a faulty idle air control valve. The computer uses the valve to control idle speed by regulating the amount of air entering the throttle body. Its possible the motor inside the valve is weak, or the valve is gummed up. I would unplug the valve when base idle is near normal and drive it for a day or two. If the valve is the problem the idle speed should stay in one place. And it should set a trouble code for the valve being disconnected.
If you notice the car running rich(black smoke out of the exhaust) you might look at the MAP sensor. It is a common problem with these cars,and about 50 bucks at your local parts store. You will find it on the passenger side inner fender just in front of the strut tower, it is a small black box with one vaccum line and one elec. plug. try pulling off the vac. line and plugging it with a bolt the car should idle like that, if it does, you have found your problem. Hope this helps
buy a bottle or two of gas line anti freeze, it absorbs any water that may be in your fuel. add one bottle now and one the next time you fill up. if it is water as i suspect you will notice results almost immediately.