ERRATIC MISFIRE

1997 GMC

Tiny

williemom

July, 21, 2008 AT 7:46 AM

Engine Performance problem
1997 Other GMC Models V8 Four Wheel Drive Automatic 189000 miles

Just replaced the engine in my suburban. Now it is idling very rough and check engine light is on or flashing. Replaced the crank sensor. Scan code is showing erratic misfire. Next step to replace the Camshaft position sensor?

FOUND 1062 RELATED QUESTIONS

1 Answer

Tiny

Jack42

July, 21, 2008 AT 7:53 AM

Those CPI engines were good for sticking injectors after you disturb them. If you scan th ePCM or watch " misfire data" on a scanner it will tell you which one is stuck. Need to verify this as it may be more than one that is not working. Its a little pricey, but I suggest the updated injector for your Sub, it eliminated the extra valve that sticks, from A/C Delco

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