Re: Idle problem- 87, 5kcst

[rjandrew@post.cis.smu.edu (R Justin Andrews)]

One other thing do a compression check!
if he does not have at least 110psi in all of the cylinders or
one is vastly lower than the other the problem is there.
Did he have the head checked out by a mchine shop? 
I have a feeling if it got hot enough to melt the wire loom
it may have warped (being aluminum and all).
 HTH,
 Rich Andrews
 rjandrew@post.cis.smu.edu
> > 
> > I am writing on behalf of my friend, another Audi owner who does not (yet)
> > have access to the infinite wisdom available on this list <g>.
> > 
> > He has a 5kcst which he recently replaced the head gasket on.  Ever since,
> > it has idled very roughly and feels like its running on 4 cylinders when
> > you first give it the gas, after that, it hums along just like it should.
> > He's cleaned the ISV (at my request) which improved things slightly but not
> > much.
> > Another weird thing........If he pulls the oil cap off while its idling, it
> > stalls immediately.
> > I think there's something screwed up in the crankcase ventilation system,
> > but I have no experience with this problem.
> > 
> > His SO was driving it when the head gasket originally went and just about
> > melted the engine down.
> > The engine got so hot that it started to melt the ignition wire loom on the
> > top!
> > 
> > He replaced the water pump, TB and head gasket, put it all together and
> > started it up, but immediately shut it down due to lack of oil pressure.
> > 
> > After pulling the pan, he found a glob of plasticized goo about the size of
> > a small cup plugging the suction strainer of the oil pump.  He cleaned it
> > out, buttoned it up and the car still runs pretty good exept for this idle
> > roughness.
> > Any ideas about the idle problem or what the heak he could have melted into
> > the oil pan?
> > 
> > TIA
> > 
> > Jerry
> > 86 5ks 157k, slushbox but going strong (friends 87 5kcst, still ailing from
> > meltdown)
> > 
> > 
> > 
> 
>