bad TPS
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The TPS on a 6.2 either controls only the TCC lockup ('J' motor), or TCC and EGR/EPR (on a 'c' code). I have an '85 K5 with a 'c' motor, but I swapped to a 'j' intake (gonna be an 'f' turbo intake soon) which 86'd my EGR and d/c'd my vac lines to all but the A/C. When my 'c' TPS went bad I got one for a 'j' motor. The 'j' TPS just cuts off the TCC at dead idle, and again at WOT.
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02-05-2015 12:10 AM