1999 5.7 Tahoe -12 degrees timing
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CF Beginner
Joined: Aug 2023
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From: Louisiana
1999 5.7 Tahoe -12 degrees timing
i have a 1999 5.7 tahoe and the PCM retards the timing -12 degrees as soon as you hit the gas. when we changed out the fuel injectors we had a few wires to pop out of the cavity on the harness plug. If a few of these are off ( in he wrong cavity) will it make the PCM change the timing to try and correct the fuel delivery. I know this is probably a weird question but im truly at a lost. BTW we ordered a new PCM and installed it and it still does the same thing as the old one.
CF Monarch
Joined: Oct 2017
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From: USA
i have a 1999 5.7 tahoe and the PCM retards the timing -12 degrees as soon as you hit the gas. when we changed out the fuel injectors we had a few wires to pop out of the cavity on the harness plug. If a few of these are off ( in he wrong cavity) will it make the PCM change the timing to try and correct the fuel delivery. I know this is probably a weird question but im truly at a lost. BTW we ordered a new PCM and installed it and it still does the same thing as the old one.
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Marseyus
Tahoe & Suburban
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Sep 26, 2011 7:03 PM