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F150: I have a f150 5.8 extended cab 4x4 with 144000 miles.

Customer Question
I have a f150 5.8...
I have a f150 5.8 extended cab 4x4 with 144000 miles. Experiencing no problems I drove to town the other day stopped and talked to a friend driving back all the sudden it started running rough, jerking, loosing power etc.... I noticed my overdrive light on the shift lever was blinking. I got home (3miles) here's what I know..... I can steer it up it idles great can move in driveway slowly no problem as soon as I accelerate any at all it starts it again. I have since replaced map sensor, throttle position sensor (bottom of throttlebody) checked battery cables , looked for loose grounding? I am clueless, help!! The radio has been acting as if it has a short , working and not working and recently it had some brake/taillight wiring issues. Don't know if any of that helps?
Submitted: 3 years ago.Category: Ford
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Answered in 38 minutes by:
5/24/2015
Ford Mechanic: Tim Mohr, ASE MASTER TECH replied 3 years ago
Tim Mohr
Tim Mohr, ASE MASTER TECH
Category: Ford
Satisfied Customers: 16,707
Experience: 30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL
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Hi, my name is ***** ***** you checked the actual fuel pressure yet?
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Customer reply replied 3 years ago

hi tim, i have not and how would i do that

Ford Mechanic: Tim Mohr, ASE MASTER TECH replied 3 years ago
you need a pressure gauge, and it hooks up to the test port on the fuel rail, most parts houses like autozone will loan you a gauge for a small deposit, can you get one?
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Customer reply replied 3 years ago

im sure i can get one, what should it read? Tim if its not the fuel pressure where will we look next?

Ford Mechanic: Tim Mohr, ASE MASTER TECH replied 3 years ago
Let me know what the fuel pressure is when you get a chance,Tim
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Customer reply replied 3 years ago

Tim, my fuel pressure 35. we pulled codes and the only codes that showed up are 624 and 632 ??

Customer reply replied 3 years ago
Relist: Other.
I just think the more minds looking at the issue is better overall
Ford Mechanic: Tim Mohr, ASE MASTER TECH replied 3 years ago
Does the pressure drop when you try to accelerate?
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