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Re: PLEASE HELP!!! Trouble Codes for an 1988 Audi 90

Could be a big enough vacuum leak.
Had that problem once.  Check intake boot, etc.


-----Original Message-----
From: Hugh Farfan <dpch@tbol.net>
To: Robert Myers <rmyers@inetone.net>; Quattro List
Date: Thursday, January 07, 1999 1:29 AM
Subject: Re: PLEASE HELP!!! Trouble Codes for an 1988 Audi 90

>Its getting spark and gas, but it is still not starting, any more
>suggestions???  TIA
>Robert Myers wrote:
>> Hugh,
>> A well adjusted Audi engine will normally start within about two
>> revolutions of the starter motor.  (Quickly, in other words.)
>> Sounds like a possible fuel related problem.  Also possibly an ignition
>> problem.
>> Check to see that there actually is spark at the plugs.  Pull a plug wire
>> and insert a screwdriver blade into the lead connectro.  Then place the
>> screwdriver close to something metal on the engine.  See if there is a
>> spark jumping from the screwdriver to the engine.
>> Caution!  High voltage!  Be sure the screwdriver is pretty well
>> It won't actually damage you but it will sure get your attention.
>> If spark is present then the fuel systm just isn't delivering fuel.  If
>> there is no spark then we need to check more.  Pull the center wire to
>> distributor.  Check for spark there.  (Probably no difference between
>> location and at the plugs.)  Check the coil.  Make sure that all wires
>> connected.  Do you have a meter?  If so, check to seel that there
>> is +12 volts at the input connector of the coil.  (The output is the
>> wire going to the distributor.)  There will be two other wires attached
>> the coil.  One provides +12 volts.  The other is ground.  (There may also
>> be another wire for the tach.)
>> Water in the fuel frozen and blocking flow?  You'll have to judge this
>>  Add some Dry-Gas?
>> Leaking injectors?  This will cause a reluctant start but shouldn't
>> a start completely.
>> Fuel pump itself?  Fuel pump relay?
>> Have someone else turn the ignition on while you are listening inside the
>> trunk.  You should be able to hear the fuel pump.  If not, pull the FP
>> relay and insert a wire jumper across the load leads.  Does the FP run
>>  If so, start the car.  If not, the FP may be bad.  This would be
>> The common failure mode involves a rather long term gradual development
>> noise until it finally gives up.
>> Disconnect the fuel line after the filter.  See if fuel flows when the
>> ignition is turned on.  Caution!  Fire hazard.  Don't let it run long and
>> provide some sort of container to catch the fuel.  Flow rate should be
>> fairly high.  If it isn't, try disconnecting the line before the filter
>> repeat the test.  If flow rate is significantly higher, the fuel filter
>> plugged.
>> Take a close look at all the rubber under the hood.  See if you can spot
>> something which might obviously be leaking air into the induction system.
>> Excessively lean fuel mixtures won't ignite very well.
>> Good luck.
>> At 10:48 PM 1/4/99 -0500, you wrote:
>> >My car has been driving fine up till  now.  As I pulled into my parking
>> >lot the car began to lose a little power on acceleration.  After I
>> >parked the car and turned it off I decided to restart it and drive it
>> >again to see if the loss of power was still there, it wasn't as
>> >noticeable.  So I just parked it and left it there for about 3 weeks,
>> >(went on vacation).  When I try to start it, it won't start, the engine
>> >just turns but it wont catch, the battery is fully charged, I tried to
>> >start it a numerous amount of times but she wouldn't start.
>> >I am in New York, so I was wondering if the frigid weather could be
>> >playing a part in this saga.
>> >    I thought I might try to pull any codes from the system, but I am
>> >not sure on the exact procedure or the codes themselves.  Yes I know I
>> >should buy a Bentley manual, but I haven't had the time nor money.  (I
>> >am in college now.)  I hope that this is an easy fix.  Any advise would
>> >be greatly appreciated. Please Help, thanks in advanced.
>> >
>> >
>> >
>> ___
>>    Bob
>>   *******************************************************************
>>   *  Robert L. Myers  rmyers@inetone.net    Home 304-574-2372/1166  *
>>   *  Rt. 4, Box 57,  Fayetteville, WV 25840 USA      WV tag Q SHIP  *
>>   *  '95 S6  Cashmere Grey - der Wunderwagen                        *
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