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Old 02-25-2013, 02:23 PM   #8
jimmydean
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Join Date: May 2005
Location: Beaverton, OR
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Re: Service Engine Soon Light Ghost!

My '92 does something similar, but I haven't checked the codes yet.

Start the truck, it runs like a top, after about 15 minutes of driving, the SES comes on and will sometimes stay on, sometimes go off. The truck doesn't seem to run any different and if I stop for even a minute, the light will reset and come back on later, maybe.

Sounds like it might be something like o2 or EGR type sensor, I will run the codes when I get home.
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