Question about 1991 Audi 90
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Posted on Jan 02, 2017
I've owned the same car. Check that the fuel relay 'primes' the system before you start the car. When you turn the key to the on position (all you dash lights, ready to start) you should hear the fuel pump run for a second or two. If it doesn't run you can replace the relay for about $30. If the relay is not the problem, it may be a check valve within the fuel line to the engine. This valve keeps fuel from draining back to the tank when the car is sitting. That way, there is fuel close to the motor when it's time to start. The temp senor was not a bad shot, they were thinking it was bad sensor not telling the cold start injector to run. Obviously not the case. However, the injector itself may be faulty in some way. As long as the car always starts, it's one of these problems, assuming the ignition system and engine mechanicals are in running order. good luck. JK
Posted on Jul 05, 2008
You and your key will have to pay a visit to an Audi Dealer for a Dyagnosticcheck and key reprogramme...if you have a spare key try that..my mate had the same problem on a BMW.
Posted on Dec 05, 2008
get a pair of side cutters and cut the alarm out completely its a boy racer add and not original.its easy to remove if you know a bit of basics
Posted on Jun 09, 2009
clean the throttle body inside. check the idle airspeed control valve,(iac) is ok....check the sensor wires located on the air cleaner assembly if the air flow sensor is gone,it will not run proper. start with a good tune up ....correct plugs,wires cap rotor.fuel filter and pcv valve..check all the vacuum lines are tight.
Posted on Jul 04, 2009
Have you checked to see if there is spark at the plugs? If not, simply take out 1 plug (can be any one of them), connect the plug wire to it and just let the threads of the plug rest anywhere on the engine block. Have someone turn the motor over while you are looking at the gap on the spark plug. If your distributor is sending sufficient power, you should see a nice healthy spark! If no spark, then your problem is either bad coil, bad distributor, distributor cap, rotor, or ignition. But first things first, check to see if you are getting spark.
Posted on Mar 08, 2010
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