quattro Digest, Vol 6, Issue 2

[Larry C Leung]

Steve,

Have you checked the IC for leaks. The telltale is an oily film at the
seam(s)
of the IC and an oily film on the rad core support. BTDT. 

LL - NY



> 
> > Date: Thu, 1 Apr 2004 11:29:43 -0600
> From: "Livolsi, Stephane" <Stephane.Livolsi at investorsgroup.com>
> Subject: 88 5kcstq poor running - update
> To: "Audi Quattro List" <quattro at audifans.com>
> Message-ID: 
> <A9CCC2FEA3353D4B9BB3D1DC8939777004CC1771 at igamail3.iga.bz>
> Content-Type: text/plain; charset=us-ascii
> 
> Last nite I did a bunch of stuff and still the poor running.  This
> morning I noticed that under a part throttle application, trying to
> accelerate, I could tell that I wasn't getting the power I should be 
> and
> that it was running rough, and boost gauge was at .8, then without
> changing throttle position, it cleared up for a second, power surged 
> and
> boost jumped to 1.1, then power dropped again and boost dropped to 
> .8 -
> does this mean anything to anyone? anyone? Mr. Bueller?
>  
> here's what I did. Checked all vac hoses for leaks - all good
> Michelin man removed, compressed and holds. visual inspection shows 
> it
> is in good shape, no cracks.
> checked the cold side of turbo and it turns freely with very very 
> very
> little play in the shaft.
> checked the crankcase breather and the tee, wastegate hoses looked 
> good
> (but did not remove them) and ISV hoses are good.
> replaced fuel and air filter (air filter was really dirty and I know 
> why
> - very difficult to do with the Euro lights)
> replaced the radiator - this was incidental as I broke the neck off
> while leaning on it.  My bad.  Fortunately I had the relatively new 
> one
> out of the parts car.
>  
> What else is there, man?
>  
> DPR? - if someone could take a few minutes and explain how this 
> works
> and how to test I'd really appreciate it.
> potentiometer? - I don't quite understand what this does, but I do
> understand how pots work in general - could there be dead spots on 
> the
> pot that buggers up the mix at certain throttle positions but not
> others? 
>  
> This weekend I will be doing the following:
>  
> removing exhaust and checking the cat
> swapping the coil for the known good one from the parts car
> checking the idle/wot switch over really well - I don't think I can 
> swap
> them as it looks different on the 2 cars
>  
>  
> If all else fails, swap the whole fuel dist from the parts car.  
> After
> that I can't think of anything else other than swapping the whole 
> engine
> from the 86 into the 88.
>  
> Stephane
> 
> 
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> End of quattro Digest, Vol 6, Issue 2
> *************************************
> 
>