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misfits · 08-09-2010, 04:39 PM

I replaced the distributor module and It ran better for a few days now its back to jerking and popping. Its still storing a code 13 and 42. The engine that was swapped in has no spot for an o2 sensor on the manifold... Im not concerned with mileage its a spare vehicle, I just want it to run better.
So having swapped out the distributor module what next to check for a code 42? Im assuming that means the ecm is bad.

08-09-2010, 04:39 PM	#13
misfits Registered User Join Date: Feb 2001 Location: Sturgeon Bay , WI USA Posts: 375	Re: 1990 chevy code 42 I replaced the distributor module and It ran better for a few days now its back to jerking and popping. Its still storing a code 13 and 42. The engine that was swapped in has no spot for an o2 sensor on the manifold... Im not concerned with mileage its a spare vehicle, I just want it to run better. So having swapped out the distributor module what next to check for a code 42? Im assuming that means the ecm is bad.