Fuel gauge issue

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Jul 18, 2019 | 09:24 PM

kemsley21

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Fuel gauge issue

I have an early build 99 v10. I just replaced my fuel pump and assembly (installed a motocraft) my fuel gauge is reading empty now. It should be around half a tank. I drove it around the block a few times and the needle moved to about an 1/8th. Any ideas? Is it something that needs run time to calculate?

Jul 19, 2019 | 10:08 AM

krewat

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From: Long Island USA

Nope, has to be something either wrong with the float sensor/wiring, or it's the wrong sensor. Do you still have the old fuel pump? You might be able to swap it.

Jul 19, 2019 | 12:28 PM

kemsley21

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I didnt get rid of anything yet. I'm wondering if I ordered the wrong one. There's too many to choose. I'm starting to think there wasn't anything wrong with my old one

Jul 19, 2019 | 12:51 PM

krewat

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Why did you change it out in the first place?

Jul 19, 2019 | 12:58 PM

kemsley21

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Since I've owned it, it's always kinda stumbled into a start up after sitting for awhile. Had my headgasket go out at 173k so I decided to just throw in a remaned engine. Start up symptoms didnt go away. I had my gf take it to work (works at ford) the guys there said my fuel pressure was bleeding off and that's what was causing the start up issue. About a week after that it started having a misfire. Threw a code for random misfire and cylinder 10 misfire. I thought it had to be cause by the bad/leaking pump.
This morning when I started it up, it still stumbled

Jul 19, 2019 | 01:05 PM

krewat

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Did you change the fuel pressure regulator?

Jul 19, 2019 | 01:15 PM

kemsley21

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Yes. And pcv, IAC valve, cleaned the MAF, replaced numerous vacuum lines, fuel filter, brand new spark plugs. Only thing left are the coils. I was told they were replaced at 150k but he used accel, not motocraft

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Jul 19, 2019 | 02:08 PM

kemsley21

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I haven't tried that yet. I'll get back to you on that one tomorrow

Jul 19, 2019 | 07:29 PM

#10

kemsley21

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Ok fuel gauge is working now. I filled up and it shows full. Truck is still running rough. Threw a code for p0153

Jul 25, 2019 | 01:55 PM

#11

maticuno

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From: California Desert

To help reset the gauge, disconnect the battery for 30 seconds, then reconnect. I just had this issue with mine.

Jul 27, 2019 | 07:49 AM

#12

rvpuller

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From: Home Base Nebraska

Quote:

Originally Posted by kemsley21

Ok fuel gauge is working now. I filled up and it shows full. Truck is still running rough. Threw a code for p0153

Are you sure you don't have a intake manifold or gasket leak or any place after the maf? That will give you a lot of different problems depending on the temp of the motor with things expanding or contracting.

Denny