1997 Silverado at 65 rpms stay high and check engine flashes.

Asked by Oct 18, 2015 at 07:06 AM about the Chevrolet C/K 1500

Question type: Maintenance & Repair

8 Answers

1,395

you have a misfire condition, do a tune up to correct it and all should be good

1 out of 1 people think this is helpful.
37,965

No mention of misfire, rpms is the key word, #1 if it is at all possible to run at 65 rpm reason the check engine light would be coming on from low oil pressure. Again if this motor can run at 6500 rpm, which I do not think so because of the Rev limiter, could be low oil level in the engine.

37,965

Now on my 1995 Silverado , I put a chip in the computer to change the Rev limiters rpm. I can run 8000 rpm with my motor.

1,395

Rowefast there was no mention of misfires. the only thing to make a engine light flash, that's why I was going that route, Low oil pressure would make the oil light come on not so much the engine light. just my take on this, the question is lacking in information, Im taking it at 65 mph, with high RPMs. Sometimes very hard to diagnose over the internet.

1 out of 1 people think this is helpful.
56,825

The check engine light is flashing because the engine is misfiring and damaging the catalytic converter. The high idle is most likely a vacuum leak or bad IAC (Idle Air Control) valve. HTH. -Jim

37,965

I was not the one talking about a misfire, Were in his question does he mention a misfire?

1 out of 1 people think this is helpful.
56,825

He doesn't have to mention a misfire. A flashing check engine light means that the engine is misfiring. Whether the poster knows it or not. HTH. -Jim

1 out of 1 people think this is helpful.
16,255

The check engine light flashing indicates misfires, the question is very poorly worded and punctuation can change what he means by simply inserting a comma. Everybody calm down, lol.

1 out of 1 people think this is helpful.

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