Generally how I roll. I was unaware that the EGR-Knock Sensor-Retarded timing loop was an option, but the logic tracks. Since I'm already planning to pull the lower intake, I figured that'd be the only way to clean them out completely. I assume I'd of found this out when my USB-OBD1 cable shows...
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*Edit: I have no idea what the gear ratio is, and I don't have a tach because it's the base of the base model. I'll check that. Also my fan clutch looks like the unit "for 3.42 or lower gear ratios" so I may be handicapped in the diffs. I just found a 14 bolt SF 6 lug off of a z71, so...
I've been working my way through my 1988 K1500 with a 4.3 tbi and NV3500 manual transmission. I picked it up for cheap and it's been a fun project, but I'm in need of a fresh perspective. The truck has 40k on a the engine/160 on the body (Previous Owner had a FPR burst and wash down all the...