tps code

Asked by Oct 16, 2016 at 08:22 PM about the 1998 Dodge Ram 1500 4 Dr Laramie SLT 4WD Extended Cab SB

Question type: Maintenance & Repair

went through a car wash with my 98 ram 1500 360
and check engine light came on. idles ok but if you
run the rpms up and take your foot off the gas it
will stall. 3 codes related to high voltage tps.
replaced the tps and nothing changed. checked
cap and rotor before I checked the codes. the only
thing that I think did anything was I unplugged the
pdc and plugged it back in and it stopped for about
3 revs then the problem came back. I tried it again
3 more times and those times nothing changed so
I wondered if it was coincidence. I took out the ac
relay and horn relay. didn't help. plug wires and
everything is new. I'm starting to think pcm or pdc?
any ideas? the fuel pump won't hold pressure but
when its running it holds 50psi.

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