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1991 Chevrolet 3500 Pickup Question: Check engine light goes on anf off



dodo512, 7.4L V8, Tracy, CA, September 03, 2012, 20:22

After driving for 15/20 miles the C.E.L comes on, if I stop, turn the engine OFF and then restart it, the C.E.L stays OFF for another 20/25 miles, then comes ON again...and I think I smell a "burnt" odor.
It is a Chevy 454 (on a Pinncle MH)
Thanks a bunch

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