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Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 36056
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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Ford F150: 5.0,1989,Lariat,I..fuel pumps..coil..relay

Resolved Question:

I have a Ford F150,5.0,1989,Lariat,I can''t keep it running after it starts, chokes out. I have purchased new brain, 2 new fuel pumps, coil, soark plugs,wires,changed a relay. I am out of options and parts to buy please help. I keep thinking its something simple Im missing but don''t know what.
Submitted: 9 years ago.
Category: Ford
Expert:  Ron replied 9 years ago.


Thank you for asking your question on Just Answer.

There are 3 things that will make the 1989 engine coke out , 1 fuel pressure regulator. 2 ECT (engine coolant temp sensor) and ACT (air charge temp sensor) Start with checking fuel pressure (normal 32 to 35 PSI) if it higher than that its likely a bad regulator.

Customer: replied 9 years ago.
Reply to Ron's Post: Could it be the regulator that switches off the fron tank from the back tank so I have gas pressure?
Expert:  Ron replied 9 years ago.
Usuall when its a regulator it floods the engine with excessive fuel pressure. Making it choke and blow black smoke.
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