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1992 4.9 e4od in the f250 part 2

F 150Cobra

"Wild HoRsE" Got Torque?
3,642
104
Aruba
Does these trucks has some kind of safe mode? Like it wont go more than 10% load so it dont burn the trans up??

These are the codes i got

637 tot sensor was high
327
654mlps sensor not in park
558 egr valve
621 shift selenoid 1 open
629 tc clutch selenoid failure
627 tc selenoid failure
542 low speed fuel pump failure (no tin)
624 epc failure
626epc current is low


Either a bad harnass or bad mlps and selenoid pack ?
 

blacksnapon

Moderator
Staff member
check fuses and the connector into the trans for corrosion and/or water intrusion. You're losing power to the trans and that defaults it to second gear.
 

F 150Cobra

"Wild HoRsE" Got Torque?
3,642
104
Aruba
Yessss correct only 2nd gear works!
 

F 150Cobra

"Wild HoRsE" Got Torque?
3,642
104
Aruba
Ok gonna chek all relays first then chek full harnass

Its an 1992 harnass engine trans we installed into an 1996 f250 that was a diesel it starts and works but a few issues


And the other thing it does.. it dies when i give it gas in gear u cannot give it more then 25% throttle it will loose a few cilinders when free rev or and dies in gear .. ( we cheked with another ecu one for a manual and the engine revs fine drove fine in 2nd but maybe its a kind of safe mode so u dont burn up the trans??
 
Last edited:

F 150Cobra

"Wild HoRsE" Got Torque?
3,642
104
Aruba
Cleaned all hrnass plugs everything works now thanks!
 

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