ignition problems (i think) somebody please help!!!!
audilvr at hotmail.com
Wed Dec 17 18:09:21 PST 2008
now i just took a desperate drive to the store, and it ran like crap for the first 1km or so and then it cleared up and the only problem was the 3000 cut out. i hate intermitten problems!!!!> Date: Wed, 17 Dec 2008 16:51:17 -0500> From: audi at humanspeakers.com> To: audilvr at hotmail.com; quattro at audifans.com> Subject: Re: ignition problems (i think) somebody please help!!!!> > (Please keep replies on the list)> > Have you checked the timing - cam vs crank?> > Plug wire condition?> > Ground wires at intake manifold?> > The so-called "spare" fuse(s) in the side of the fusebox, that supply > the CIS system?> > Check the cat for broken guts.> > Check all "vacuum" lines for leaks.> > donald grady wrote:> > i've tried 3 different fuel meters, new fuel filter, swapped the coil, > > plugs,timing belt(it was nasty when i checked it),rotor button, coil > > wire.the idle switch is working. the distributor is still factory set > > with the cover over the bolt. i even checked the dist. shaft for play, > > but none.i,m out of idea's.a 20v is going in this spring....may have to > > be sooner but i'd like to avoid it, nasty time of year to be without wheels.> > > > > > > Date: Wed, 17 Dec 2008 16:06:18 -0500> > > From: audi at humanspeakers.com> > > To: audilvr at hotmail.com> > > CC: quattro at audifans.com> > > Subject: Re: ignition problems (i think) somebody please help!!!!> > >> > > 3k is an odd place for the cutout - around 5k is typical of a 4 cyl fuel> > > pump relay, around 1500-1800 is typical of a "stuck closed" idle switch> > > (which you might want to test to make sure it's working).> > >> > > One thought I have is that you might have a dead spot on the> > > potentiometer on the side of the air/fuel box. It's hard to get to on> > > the type 89, being "under" the edge of the fender. To check it you need> > > to put a meter on it (two different ways) and slowly raise the air flap> > > through its range of motion.> > >> > > Only problem with that theory is it's not rpm-related really, it's more> > > related to pedal position/air demand.> > >> > > One thing in its "favor" is that some of the trip computer functions use> > > the pot signal (fuel economy readouts, mostly).> > >> > > What have you replaced or tested so far? Have you checked the ignition> > > timing?> > >> > >> > > > i'm driveng an '88 90 quattro 5 cyl.this problem has been escalating> > > > for a while and now the car is not driveable. it started out that the> > > > engie will cut out at 3000 rpm kind of like a rev limiter.i found if> > > > the fuel meter on the front of the cis fuel meter is unplugged, the> > > > car will run fine...but the onboard computer goes to all zero's when> > > > 3000 is reached. i've tried swapping just about everything i can> > > > think of but i can't finnd the problem and now tthe car won't idle or> > > > run properly. it surges stalls and backfires(blew the side out of the> > > > muffler when it backfired).i'm at a loss and running in circles.if> > > > anyone thinks they can help, please do.> > >> > >> > > --> > > Huw Powell> > >> > > http://www.humanspeakers.com/audi> > >> > > http://www.humanthoughts.org/> > > > > > ------------------------------------------------------------------------> > Win a trip with your 3 best buddies. Enter today. > > <http://www.messengerbuddies.ca/?ocid=BUDDYOMATICENCA19>> > -- > Huw Powell> > http://www.humanspeakers.com/audi> > http://www.humanthoughts.org/
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