1992 Buick Roadmaster with the 5.7L V8 engine

Asked by Apr 18, 2017 at 02:37 PM about the 1992 Buick Roadmaster Limited Sedan RWD

Question type: Maintenance & Repair

I have a 1992 Buick Roadmaster with the 5.7L V8 engine. The problem that
I’ve been having with it is the SES comes on whenever I back off the gas
when doing more that 60mph. The car still runs smoothly, drives well but
the SES comes on and stays on. Once I turn the car off, then back on the
SES clears and the car runs fine still. Anyone have any ideas on where to
start trouble shooting this issue?

3 Answers

119,995

You need to have the trouble codes read to know what is going on. Post them here and we will try to help.

2 people found this helpful.
81,335

You'll either have to use a paperclip or a scan tool that reads OBD I vehicles to get the two digit trouble code(s). There are many things that can trigger the service engine soon (SES) light. HTH. -Jim

1 people found this helpful.
81,335

LOL, thanks Trannyman!! Your knowledgeable answers mixed with good humor are always a pleasure!! -Jim

1 people found this helpful.

Your Answer:

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