Help Needed -- 1988 5000KSQ

[Ben Swann]

Reminds me of another one I encountered awhile back.  The car was a 200 not a 5000, but
this may apply.  In this car, there was a serious loss of power due to this and was very
difficult to track down.  On some models, and I'm not sure which years, there was a
funny looking damper hose that connects turbo out into the  intercooler.  Instead of  a
single pressure hose, this was a several part assembly that included a special sound
dampening hose.  Well this one ate the sock.    There is a filter sock that is contained
in the hose.  It became dislodged from within the hose.  I found the sock inside the
endcap of the intercooler.  Needless to say it was seriously restricting flow and the
car had no power.  
 
Ben

  _____  

From: LL - NY [mailto:larrycleung at gmail.com] 
Sent: Monday, July 28, 2008 9:03 AM
To: Ben Swann
Cc: b1biker at aol.com; quattro at audifans.com
Subject: Re: Help Needed -- 1988 5000KSQ


Ben may have hit the nail on the head there, the leak in my igloo was particularly
difficult to find. Check under the clamps, they can tear there and be virtually
invisible.

An often overlooked boost hose is the LOWER intercooler hose, which is made of VERY
thick rubber (on your car, there may be a hard pipe between two rubber ends).
Unfortunately, intake tract oil will eventually work it's way through the rubber, and
your car is certainly old enough for that to have happen. You will really need to remove
the hose to find leaks in it, and, because of it's thickness, it can act intermittently
as the thickness helps it retain some integrity, particularly if it's cold enough to
make it act stiff. Ask me how I know....

IF you need the upper Michelin Man hose (also best to check when removed, then accordian
them with a small light inside) I have some NOS ones that I haven't had the time to post
to get rid of. 

HTH,

LL - NY


On 7/27/08, Ben Swann <benswann at verizon.net> wrote: 


A few educated guesses - in short the car runs but has no power.

The air fuel mix is likely off and probably there is an intake tract leak.  If it were
post turbine, the car would likely run funny and have no real boost, but still get out
of its way.  It therefore sounds like there is a serious leak from the air boot "waffle
hose" down to the turbo somewhere.  I would hazard a guess that the waffle boot is
simply not seated on the fuel distirbutor and you'll find an easy fix.  Else there is a
rip in one of these hoses, and maybe one blew off at the intercooler ofr turbo - under
car.  Could even be the Michelin Man hose (goes from intercooler to the throttle) and
they rip all the time - just with that tear the car should still be able to run, just
not get positive boost pressure.

So - pop the hood and start looking.  I bet you find it is an easy fix - might need a
temp repair with some tape and goo if it is a special hose - namely the waffle hose.
The intake tract need to be tight in order for air to be pulled in by the engine whereby
fuel air plate is lifted and proper mixture attained for engine to run correctly.

Might be temp sensor, O2 sensor, or some ECU related problem, but I'd check for  air
leaks first.  Would have to be one hell of a clogged fuel filter for that to be it and
fuel pumps generally cut and go - a bucking.

That is my SWAG at it.  BTW MTFS really has nothing to do with engine operation - all
coolant/temp related which is a separate harness.  There is a separate CTS for the
engine/ECU.


Ben


[From: b1biker at aol.com
Subject: Help Needed --  1988 5000KSQ
To: quattro at audifans.com
Message-ID: <8CABE4085D2F287-960-A3F at WEBMAIL-DG03.sim.aol.com>
Content-Type: text/plain; charset="us-ascii"

Fellow listers, one more problem in the continuing saga of resurrecting this car.
Yesterday I installed a new power steering pump and a 'new' from the boneyard
multifunction temp sensor. After completing the work I discovered that once the vehicle
reaches operating temp it will no longer rev and has difficulty even pulling itself; it
almost seems as though it doesn't have enough fuel. Fuel pump is new but seems to have
gotten quite a bit noisier with the onset of this problem. I suspected the temps sensor
so replaced it with the original unit but the problem persisted. I pulled the fuel pump
to see if the screen was plugged; everything seems to be OK. Any help in finding the
source of this problem will be greatly appreciated.
Gary Meier]
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