It 95 F250 XL with 351W E40D.

Here issues it run great next day when turn off then start it run ok but when hit pothole or stop. It will idle high plus transmission refused shift 3 or 4 gears it just stay 2 gears until it slipping then BANG in 3 gear like you have nitrous in engine.

When we open hood and wiggle wiring harness from driver fender to engine it kind random it work back normal then few sec it went back high idle.

When we bought that truck first day we fill tank and drove home then around town. Mpg was 15.

Now I can't get 15 mpg anymore without random high idle and transmission won't shift correct. I get 9 or less mpg.


Battery light on dashboard finally gone it was bad connector contact on alternator.