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91 200TQ Stalling



On Wed, 1 Apr 1998 15:31:06 -0800, Oscar Murphy wrote:

>We have a nagging problem with our 1991 200 TQ (20v) sedan. To date it has
>perplexed 2 dealers and 1 independent mechanic. The car has 98K miles on
>it.
>[ ... ]
>SYMPTOM:
>Car stalls on when shifting @ 3000 rpm after hard acceleration. If I shift
>at a higher or lower engine speed the problem doesn't occur. If I
>accelerate normally, it doesn't ocur.
>[ ... ]

A couple things: check that the boost bypass valve (between IC and
turbo compressor inlet) is not stuck partly open and check the vacuum
hose that runs near/under manifold heat shield. It gets charred and fails.

DeWitt Harrison    de@aztek-eng.com
Boulder, CO
88 5kcstq (half the valves but twice the heart)