My 1994 Regal with 123,000 miles drives OK (lumpy idle) all day, but if I get up to 60mph and then slow down the "Check Engine Light" comes on. It is only after going over 60mph. If I stay under 60mph all day the light doesn't come on. The engine was basically torn down last year by the dealer so they could clean the intake manifold, install a new EGR valve, tune-up, gaskets, you name it. Any thoughts what the cause could be? When it did this last year, before the cleaning, they blamed the EGR valve but with a new EGR valve it must be something else. It just recently started doing this (again).
Buick Regal SES Light (Re-post)
- Thread starter IndyBuick
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