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

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

by in Tracy, CA on September 03, 2012
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2 answers
ANSWER by , September 03, 2012
Have it scanned for codes. Then will be able to tell you more.
ANSWER by , September 03, 2012
scan codes and post so we can adv