Two days ago I had a flickering check engine light on my 1990 a9p (maf) ecm, which I understand can have more check engine causes than earlier computers.
It was not, btw, either temperature or oil pressure.
Suggests a loose wire maybe, if you know which wires can cause an instant check engine.
Or a problem on the edge of what the ecm defines as check engine worthy.
I have not seen it since, but, I have not driven far since.
I'm driving 1000 miles tomorrow.
It only occurs once the engine is hot, and only for a minute or two at a time before going off and back on again.
I pulled codes, KOEOff, and found 31 (egr code that I've had for months), and... 95 I think it was, which was the fuel pump self-check test code that I was warned I'd get with a MAF swap, so no real problem. Nothing else.
If I see the light on again, and maybe more permanently, how do I read it with the engine still on? Same exact way?
thanks!
It was not, btw, either temperature or oil pressure.
Suggests a loose wire maybe, if you know which wires can cause an instant check engine.
Or a problem on the edge of what the ecm defines as check engine worthy.
I have not seen it since, but, I have not driven far since.
I'm driving 1000 miles tomorrow.
It only occurs once the engine is hot, and only for a minute or two at a time before going off and back on again.
I pulled codes, KOEOff, and found 31 (egr code that I've had for months), and... 95 I think it was, which was the fuel pump self-check test code that I was warned I'd get with a MAF swap, so no real problem. Nothing else.
If I see the light on again, and maybe more permanently, how do I read it with the engine still on? Same exact way?
thanks!
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