Good evening all -

Hoping this rings a bell with someone:

My tach periodically behaves erratically, swinging
between zero to 4000 rpm while at a stop light. It
calms down as the engine speed increases.

BUT, there is a high probablity of a power loss
occurring afterwards.

The power loss is manifest in either of two ways:

1. Running smooth, but down on power....like a
temporary fuel filter plug or a timing retard.

2. A complete shutdown. The wiring harness patch has
moderated this (usually)to a hard stumble, then it
runs Ok.

Thanks,

Larry Hensley
'88 GL automatic (Acadia)

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