Question about a 1987 5ktq

[TM]

If it's the check engine light (see your owner's manual for the
exact pictogram), I would check the inlet air temp sensor first,
as well as pulling codes before you shut down the engine- that
non-volatile memory can be a real PITA on these cars.

I had that problem with the light coming on under full load and
it was the inlet air temp sensor- I never got it fixed (must have
had an intermittent connection, because jiggling it made the light
go away for a few months) and now my friend who owns the car is
completely neglecting it so it will die a miserable death. :-(

Taka

-----Original Message-----
From: quattro-admin at audifans.com [mailto:quattro-admin at audifans.com] On
Behalf Of Brett Dikeman
Sent: Wednesday, December 12, 2001 12:14 PM
To: Kneale Brownson
Cc: Stricker, Michael; 'quattro at audifans.com'
Subject: Re: Question about a 1987 5ktq



I think he's referring to the "electric engine block" light :-)

It's flashing -possibly- because it is retarding timing etc.; it could
be because the knock sensors aren't torqued properly or are defective,
or it could be actual knocking under load.  Michael, do you get any
hesitation or stumbling when this happens?

  One quick possibility is to switch
to a higher grade gas at next fillup; 5000 turbos should run -fine- on
87, but maybe if you have a ton of carbon deposits etc or something, it
might start getting fussy.  If it still flashes when you punch the
throttle, it might be the knock sensor needs to be re-torqued.

Are you on the up+up with normal maintenance items?  Fuel and air
filters? Plugs, wires, distributor cap and rotor?  If not, these should
be looked at anyway...I assume you're on the up+up with oil changes
too?(synthetic, every 5k miles?)

  How about engine mounts?  I have a vauge recollection
that bad engine mounts can let the engine really rattle around and fake
out the knock sensors...don't just replace them on this, of course, but
inspect them; they're a regular failure item.  Failure is characterized
by, among other things, leaking oil from the mount(they're oil filled.)
When my mechanic pulled both, one was covered in oil...

I'm not a 5000 expert anymore, so see what some other people say :-)

B

On Wed, 12 Dec 2001, Kneale Brownson wrote:

> --
> What's a "turbo idiot light"?  I've driven close to 100K miles in
> turbo Audis ('87 5Ktq and '91 200q20v) and, as far as I know, never
> witnessed a "turbo idiot light".
>
>
> At 09:54 AM 12/12/2001 -0500, Stricker, Michael wrote:
>
> >Hi,
> >I was looking at a 1987 5ktq and when you hit the gas, the turbo
> >idiot light in the dashboard goes on for a moment.  Any ideas will be

> >appreciated.
> >
> >Thanks
> >
> >Mike
> --
>
>