Re: 5k Turbo Throttle Jam @ WOT!

[Andrew Duane USG/PE <duane@zk3.dec.com>]

Hairy green toads from Mars made Gil Ceniceros say:

> Upon inspecting the throttle linkage, I discovered that the dashpot
> plunger was completely out of the dashpot, jammed between the throttle
> shaft, dashpot body, and the aluminum housing, holding the throttle
> open. The attachment between the plunger and diaphragm had broken, the
> spring behind the little bellows pushed the plunger out.
> 
> Has anyone else had this happen?
> 
> I called two dealers who told me that the dashpot was supplied only as
> part of the throttle assembly, available for about $1,200. Their
> service guys said that's how they fix the dashpot.  Another dealer
> later looked up the dashpot and found an individual part no. under the
> 1988 5000CS (turbo, non Q fiche) available by special order for about
> $90. Looks like a $10 part to me, but I'm not really surprised at the
> list price of this rarely (as yet) demanded component.

This sort-of happened to my '89 100Q about 3 years ago. I had a
high idle that was *not* the ISV. After much screwing around, my
mechanic discovered that the dashpot was corroded and sticky.

I found the same thing about the throttle body as the replaceable
unit, and looked at getting one from a boneyard for about $200.

Just to be safe, I removed the dashpot from my throttle body so it
wouldn't stick. Well, three years later I still don't miss it. I know
what it's supposed to do, but I'll be damned if I can detect anything
it actually *does*.

Pull it, and I think you'll be happy.

Of course, the turbo may need the vacuum modulation more than the
NA engine, but it's worth a try....

--

Andrew L. Duane (JOT-7)			duane@zk3.dec.com
Digital Equipment Corporation		(603)-881-1294
110 Spit Brook Road
M/S ZKO3-3/U14
Nashua, NH    03062-2698

Only my cat shares my opinions, and she's too heavy to care.