1990 F250 460

Asked by Kaleb Apr 11, 2019 at 10:43 PM about the 1990 Ford F-250 2 Dr XLT Lariat 4WD Extended Cab LB

Question type: Maintenance & Repair

I recently motor swapped my 1990 F250 with
a 460, to a 1991 460 of the same type. The
motor ran great in the parts truck, but as
soon as I put it in mine It will only start on
ether and won’t idle, I have to feather the gas
for it to even attempt to run. I am completely
stumped. Any help would be appreciated.

2 Answers
60

Sokoto answered 4 years ago

Did you check the eec/ecu/ecm? Just a guess.. And I dont know anything.

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Kaleb answered 4 years ago

Thanks I ended up figuring it out, it was the MAPS sensor and probably a bad fuel pump. Replaced both and ran like a top!

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