FTE Fng
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4wd High
Joined: Apr 2023
Posts: 9
Likes: 4
FTE Fng
Greetings FTEs’.
I stumbled across this forum while trying to troubleshoot problems with my 89 F150.
Long story short was having trouble starting. I replaced the fuel pump in the tank. Started and ran great after that for a bit. I turned it off. Came back the next day. Filled the tank with fuel and it has not started since. I have checked the tps the egr etc with a meter. All check out as specified. I’ve killed the solenoid trying to start. I am looking to replace the fuel pump relay -have not yet purchased nor have I tested. I have not checked the inertia switch. Last check of obd1 codes indicate a pass Koeo. Can’t check engine on because won’t. Start. I will be replacing the solenoid this weekend. Possibly the relay. Will likely borrow a gauge to check fuel pressure this weekend too.
many other thoughts?
I stumbled across this forum while trying to troubleshoot problems with my 89 F150.
Long story short was having trouble starting. I replaced the fuel pump in the tank. Started and ran great after that for a bit. I turned it off. Came back the next day. Filled the tank with fuel and it has not started since. I have checked the tps the egr etc with a meter. All check out as specified. I’ve killed the solenoid trying to start. I am looking to replace the fuel pump relay -have not yet purchased nor have I tested. I have not checked the inertia switch. Last check of obd1 codes indicate a pass Koeo. Can’t check engine on because won’t. Start. I will be replacing the solenoid this weekend. Possibly the relay. Will likely borrow a gauge to check fuel pressure this weekend too.
many other thoughts?
Logistics Pro
Joined: Nov 2013
Posts: 3,928
Likes: 1,198
From: Mojave, Ca
Yep. Check fuel pressure. Where did you get the new fuel pump at? It's not uncommon for fuel pumps to fail shortly after they're installed. My advice is to buy a motorcraft pump, or the most expensive one you can find.
Thread Starter
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4wd High
Joined: Apr 2023
Posts: 9
Likes: 4
I’ve been reading through some old threads with similar problems. Sounds like new fuel pump problems are pretty common. I’m going to check the pressure today to confirm.
I will definitely replace with a higher quality part.
Thanks for the reply.
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