Just got my son a nice 1990 f150 4x4 ext cab. Has the 5.8 engine. Got it running smooth after finding a duct taped plug wire. But when the engine is shut off and key is removed the fuel pumps keep running. Any idea on where to start looking to fix em other than pulling tje neg battery terminal each time he parks it.

Thanks

Chuck

 

Here hope this helps,
https://www.ford-trucks.com/forums/1344241-fuel-pumps-keep-running-after-key-is-off.html

 

Thank you
Ill send the boy to Napa today.

Chuck