Performance modifications, tips & tricks
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So I built a 406 for my 98 C1500. It has the crank position sensor and original 4x reluctor. Swapped to a 411 PCM tuned by Black Bear. (I know I should talk to them, just hoping to get some direction before tomorrow when they open). The CKP learn code is on and when I try to do the learn procedure I keep getting a â€œrequest out of rangeâ€� message. It is an older Snap On Verdiâ€™s scanner. Also tried a new Snap On at a buddies shop that gave the same error. Question is, what is out of range? The egr code is also set even though that was supposed to be disabled. Any ideas are appreciated. I tried to look at the timing but the CMP was showing zero even after I moved it around a bit. (I did bring RPM up over 1000). Iâ€™m guessing the two are related.