Originally posted by powerx_32:
when car was at constant speed and constant rev (ie2000) all of a sudden it when to 3500.
When it went to 3500, was it just the tach going to 3500 (without the engine "revving") or did the engine rev up to 3500 and you heard it and saw it on the tach.
If it is just the tach, then you know it is just an electrical issue to/revolving around the tach (or wiring).
If it is engine revving, it could be the PCM (or wiring) or the VSS (also check the wiring/connectors to the VSS). When my VSS went, it took a long time between the first time (wet and cold March) I noticed it before it actually "died" (humid and cold December).
"Always do the cheap and easy ones first."
1996 V6 ATX 96K miles
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