Question about Audi 90

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1990 audi quattro started fine ran for 30 seconds a little rough because it was cold revved motor a little to 4000 rpm raced up then immediatly quit and hasnt started since. motor is getting fuel but seems to lack spark

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  • Richard Perkins
    Richard Perkins May 11, 2010

    Possible cam belt failure



    Remove rocker cover if possible, and hand crank engine 1 rev. observe valve movement - or not before further investigation.

  • Anonymous Mar 20, 2014

    RUNS ROUGH WHEN COLD FOR 5-10 MINS

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I feel it is you distributors hall sender/sensor. I had the same exact issue. cahnged dist and prob. solved.

Posted on Jul 31, 2009

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Check your vaccum lines, and also check the Crank shaft position sensor.

Posted on Jan 23, 2009

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Starter removal 1990 audi quattro v8


1990 Audi V-8 Quattro 3.6L DOHC

Starter, removing and installing

Disconnect battery NEGATIVE cable
Disconnect wiring from battery to starter and starter to alternator (large terminal)
Disconnect terminal 50 (small wire to ignition/starter switch)
Remove starter mounting screws on engine/transmission
NOTE: Remove upper bolt on starter by guiding 10 mm Allen socket with extension and flex fitting through opening on transmission housing over final drive
Remove starter motor assembly
Reverse procedure to install

Oct 10, 2011 | 1990 Audi V8 Quattro

1 Answer

When turn on the car in the morning, i accelerate and the revolutions up to 6,000rpm normal. In 3 minute when the car up the motor temperature to the normal operation, i accelerate and the revolutions up...


To begin with, if you are revving a cold engine to 6000 RPM, you are asking for a blown engine. Most OBD vehicles are equipped with a rev limiter that will cut off fuel at 3000 to 4000 rpm to prevent you from over-revving your engine and blowing it up. If yours is revving to 6000 RPM cold, then the rev limiter, for some reason is not working while it is cold. I have no explaination for this. The best thing I can tell you is to stop revving your engine so high when it is cold unless you really want to see what an engine looks like after is has gone off like a grenade.

Nov 27, 2010 | 1996 Honda Accord

1 Answer

1991 audi v8 quattro


i would check the throttle butterfly for a carbon build up that may keep it from closing completely. have seen this cause stalling when returning to idle rpm. Best to try to remove and clean from both sides to get good results.this is just one of many possible problems. Hope it helps if so please let me know with a reply and good luck

May 05, 2010 | 1990 Audi V8 Quattro

1 Answer

We have a 90 Quattro V8. Last summer I changed


Your V8 Audi has two necessary sensors that malfunction due to their placement in extreme heat on the lower left side of the engine just inside of the header/down pipe connection. They read the flywheel position for the engines computer ECU. The reference sensor is always suspect, but the speed sensor may need to be changed, as well. The wire connectors to the sensors that sit above the FL suspension can be tested, or just replace both sensors to get some quality time with your V8.

Jul 09, 2009 | 1990 Audi V8 Quattro

1 Answer

I have 2002 audit quattro TT with 180k miles. When I do a normal acceleration the car surges and rpm drop but pick back up. If I accel hard it runs fine. Also at idle at times it varies 200 rpm like a


this sounds similar to a problem i had. as the rpm went over 2000 the engine would stop for a split second and then kick back in.
after a few days looking my garage finally found the problem was a faulty air mass meter.
this cost me £200 in total to be repaired.

May 06, 2009 | 2002 Audi TT

2 Answers

Car racing on and off while driving


In that case I would take it to a transmission specialist.

Nov 17, 2008 | 1997 Ford Taurus

1 Answer

Turbo cut out, audi a3, 2.0 TDI, registered June 03, UK


Could be low oil level indicator tha auto shuts of engine if oil goes low

Nov 08, 2008 | 1999 Audi A4

1 Answer

'87 Audi 4000 Quattro - vacuum advance problems.


On the vacuum line that operates the advance on the dizzy, there is a plastic piece that controls the upshift light, it has a two terminal connector and an adjusting screw on one side. Today I bypassed this piece, my car revs willingly past th 4000 mark and continues to build power. I assume this piece or the small hose it uses was leaking. Sweet.

May 14, 2008 | 1987 Audi 4000 S

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