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badass66ss · 06-27-2012, 03:15 PM

It is not throwing any cel at all. everything on the motor is tight. We have not had the tranny out so I'm not sure about the Torque Converter bolts, but the tranny was replaced some time before I bought the truck. The knock sensor has been replaced as noted much earlier in this discussion. Other than loose components causing a "knock", is there anything else that could cause the timing to retard like this? Do you think the ECM could be bad again? I read somewhere that the battery should be disconnected each time you plug in/unplug the bypass wire. Is this correct? Could this short out the ECM? Thanks again for your help!!!

06-27-2012, 03:15 PM	#37
badass66ss Registered User Join Date: Apr 2012 Location: Bakersfield, CA Posts: 23	Re: 91 c1500 stutter on acceleration It is not throwing any cel at all. everything on the motor is tight. We have not had the tranny out so I'm not sure about the Torque Converter bolts, but the tranny was replaced some time before I bought the truck. The knock sensor has been replaced as noted much earlier in this discussion. Other than loose components causing a "knock", is there anything else that could cause the timing to retard like this? Do you think the ECM could be bad again? I read somewhere that the battery should be disconnected each time you plug in/unplug the bypass wire. Is this correct? Could this short out the ECM? Thanks again for your help!!!