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Audi 1994 2.0l ABT single point injection.Idle goes from 1000 rpm to 1400 rpm,back and forth. It can do this at idle or when driving. Any ideas?

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Posted on Jan 02, 2017

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SOURCE: 1987 ford tempo 2.3 Litre fuel injected will idle

this sometimes occurs with age due to egr and intake becoming carbon filled , inturn requireing more vacuum inturn raising rpm to keep up , check all vac lines for poss leaks this will cause prob , to check for leaks crank engine let idle use can of wd40 or starting fluid and spray lightly around suspected area , if rpms raise when u spray then u have found ur leak

Posted on Apr 28, 2010

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SOURCE: when i turn the AC in my audi a4 the RPM start to

Typically these things happen because the throttle body is dirty and the computer is searching for the propper setting with the idle speed control motor. May also be a vacuum leak .Check all of your small vac. hoses and clean throttle body and that should fix ya. Good Luick.

Posted on Sep 15, 2010

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My car is over revving going to 1000 rpm at idle what is it please help Audi A3 s line 2.0 tdi


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Jan 21, 2016 | Cars & Trucks

1 Answer

Toyota corolla hatch 2002 idle at 2000 rpm when


All the above is normal , except 2000rpm is a little high at idle . can be adjusted down to 1500rpm. the computer adjusts the engine speed . in drive the transmission loads up the engine idle drops to 1000rpm . in park engine unloaded rpm increase all normal.

Sep 17, 2014 | Cars & Trucks

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Have a '99 silverado that will not idle


I would check the idle air control valve that is the what controls rpms

Apr 15, 2013 | 1999 Chevrolet Silverado 1500

1 Answer

Rpm does not drop below 1000


No,only on carburated engines it,idles down to the set point,on yours,it's fuel injected,pushing gas pedal won't kick idle down,should go down after a certain amount of time,does it automatically,If you start and drive a 5 mile ride and stop at a stop sign,it should idle at it's set point if there's no engine problems,which may be.5 to .7 on your tac.When you normally first start,it will idle between 1000 to 1200 rpm's,don't push on gas,let idle say 15 seconds,put in drive and go.

Jan 13, 2013 | 2005 Chrysler Sebring Conv

1 Answer

Vehicle unused with dead battery for 6 months will start but not maintain idle


The automatic idle speed control system has lost its adaptive idle learning due to the dead battery. To help to correct this in the short term run the engine at 2000 RPM until warm, then back down to 1500 RPM for 3 minutes, then 1000 RPM for 3 minutes, then let it idle for 5 minutes, this should get the system to a point in the idle learn that it doesn't stall out, then drive it for 20 miles under varied conditions of highway and stop and go and low speed operation, that should get all to work again. If you still have problems you will need to have the system scanned to see what is going on that is causing a stall. Also add fresh fuel, gas goes bad in about 3 months. Use the recommended grade of fuel.

Jan 20, 2012 | 2001 Mitsubishi Montero

2 Answers

Engine misses at idle. changed distributer, rotor and cap, fuel filter, plugs and wires. tried to adjust idle screw not much improvement. when you crank it it will start at 1000 rpm then falls to 500 then...


had a few issues with the temperature sensor that caused this type of problem,also check the temperature driving.
Does it heat up to mid gauge or does it stay low or drop when driving.Thermostats sticking open also cause idle issues in Honda range.
Remove the spark plugs and let me know what color the tips are;sooted up or clean.
Is this the EFI injected model or one of the carby models as the above suggestions affect the EFI,but temperature is important to all?
I hope this helps you or get back to me with your findings.

Apr 10, 2011 | 1990 Honda Civic

1 Answer

I don't have steady rpm between 1000 and 2000 rpm


Pros
  • The EGR valve is vital to your car's emission controls.
Cons
  • When the EGR valve goes bad, it must be replaced.
Description
  • EGR Valve = Exhaust Gas Recirculation Valve.
  • The EGR valve controls formation of noxious emissions.
  • Rough idle and poor acceleration can be caused by a faulty EGR valve.

Feb 02, 2009 | 1995 Audi 90

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