No fuel pressure.
Thread Starter
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Trailering
Joined: Mar 2008
Posts: 19
Likes: 0
No fuel pressure.
2000 Excursion V10 about 180k miles.
Been having an intermittent problem with fuel pressure.
When it runs, it has 38 psi in the run position, and 32 psi after I start it.
My problem is 1 time out of 10 it won’t start, and has no fuel pressure.
Can’t even here the fuel pump running.
Then it might start 2 or 3 days later after just sitting there.
Is this a pump, or a different problem.
Been having an intermittent problem with fuel pressure.
When it runs, it has 38 psi in the run position, and 32 psi after I start it.
My problem is 1 time out of 10 it won’t start, and has no fuel pressure.
Can’t even here the fuel pump running.
Then it might start 2 or 3 days later after just sitting there.
Is this a pump, or a different problem.
Moderator
Joined: Jul 2010
Posts: 12,050
Likes: 1,549
From: Media PA
From all that I have read here, these fuel pumps die in 2 different ways. Some just go suddenly, like mine did, with no warning, others behave very much as you have described.
Try to run the fuel level in the tank pretty low after it does start for you, makes dropping the big tank a lot easier.
There are 2 different pumps, one for Cali spec rigs and another for the rest of them. If you still have the emissions sticker under the hood it should tell you which one you have, if not check for a third O2 sensor after the cat, if it has one it's a Cali spec build.
Its not that bad of a job to DIY, you can read up on it in the Tech Folder at the top of the EX forum page. Buy a quality pump, Motorcraft, Denso or Bosch. Good luck!
Try to run the fuel level in the tank pretty low after it does start for you, makes dropping the big tank a lot easier.
There are 2 different pumps, one for Cali spec rigs and another for the rest of them. If you still have the emissions sticker under the hood it should tell you which one you have, if not check for a third O2 sensor after the cat, if it has one it's a Cali spec build.
Its not that bad of a job to DIY, you can read up on it in the Tech Folder at the top of the EX forum page. Buy a quality pump, Motorcraft, Denso or Bosch. Good luck!
Thread Starter
|
Trailering
Joined: Mar 2008
Posts: 19
Likes: 0
From all that I have read here, these fuel pumps die in 2 different ways. Some just go suddenly, like mine did, with no warning, others behave very much as you have described.
Try to run the fuel level in the tank pretty low after it does start for you, makes dropping the big tank a lot easier.
There are 2 different pumps, one for Cali spec rigs and another for the rest of them. If you still have the emissions sticker under the hood it should tell you which one you have, if not check for a third O2 sensor after the cat, if it has one it's a Cali spec build.
Its not that bad of a job to DIY, you can read up on it in the Tech Folder at the top of the EX forum page. Buy a quality pump, Motorcraft, Denso or Bosch. Good luck!
Try to run the fuel level in the tank pretty low after it does start for you, makes dropping the big tank a lot easier.
There are 2 different pumps, one for Cali spec rigs and another for the rest of them. If you still have the emissions sticker under the hood it should tell you which one you have, if not check for a third O2 sensor after the cat, if it has one it's a Cali spec build.
Its not that bad of a job to DIY, you can read up on it in the Tech Folder at the top of the EX forum page. Buy a quality pump, Motorcraft, Denso or Bosch. Good luck!
as when it runs everything looks good and holds pressure when shut off.
Thread Starter
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Trailering
Joined: Mar 2008
Posts: 19
Likes: 0
Yep did that to,
wouldn’t explain how it would start a couple days later.
It’s intermittent, leaning towards bad gas and sitting for
about 4 months to the demise of the pump.
Still has the problem with a new filter and gas.
wouldn’t explain how it would start a couple days later.
It’s intermittent, leaning towards bad gas and sitting for
about 4 months to the demise of the pump.
Still has the problem with a new filter and gas.
Moderator
Joined: Jul 2010
Posts: 12,050
Likes: 1,549
From: Media PA
I'm not fully understanding what you are saying here, do you think it's a bad pump or do you think it's something else?
When you checked the inertial switch did it show power even when the pump didn't run?
Like I said originally, some of these pumps die suddenly and others act like yours with a series of run/not run episodes before they go completely out.
Thread Starter
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Trailering
Joined: Mar 2008
Posts: 19
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More Turbo
Joined: May 2015
Posts: 633
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From: Staten Island, NY
My Ex stalled on me in the middle of nowhere at 10:00 pm on a hot August night, would not start at all and by the time AAA figured out where I was and the tow arrived of course it started no problem. Flash forward to December of the same year and guess what it happened again, of course three hours from home and 5;00 on a Saturday. This time it cost me a tow, taxi rides, hotel and the repair and I only had 55k on mine. Believe me it’s the fuel pump. Good luck
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Thread Starter
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Trailering
Joined: Mar 2008
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Found the problem
So I think I found the intermittent problem.
When the shop dropped the tank, they found the lock ring broken in half.
My guess is somehow the pump grounds to the tank and had a bad connection?
I went and replaced the pump anyway as at 180k miles it was going to go bad.
Strangest thing I’ve ever seen, anyone else run into this?
When the shop dropped the tank, they found the lock ring broken in half.
My guess is somehow the pump grounds to the tank and had a bad connection?
I went and replaced the pump anyway as at 180k miles it was going to go bad.
Strangest thing I’ve ever seen, anyone else run into this?
Moderator
Joined: Jul 2010
Posts: 12,050
Likes: 1,549
From: Media PA
So I think I found the intermittent problem.
When the shop dropped the tank, they found the lock ring broken in half.
My guess is somehow the pump grounds to the tank and had a bad connection?
I went and replaced the pump anyway as at 180k miles it was going to go bad.
Strangest thing I’ve ever seen, anyone else run into this?
When the shop dropped the tank, they found the lock ring broken in half.
My guess is somehow the pump grounds to the tank and had a bad connection?
I went and replaced the pump anyway as at 180k miles it was going to go bad.
Strangest thing I’ve ever seen, anyone else run into this?
The tank is all plastic, nothing is grounded to that.
Fleet Mechanic
Joined: Oct 2010
Posts: 1,997
Likes: 206
From: South Eastern Michigan
Im hoping your issue is resolved.
Interesting, seems to be a lot of people experiencing fuel pump failures. My brothers truck (2001 F250 5.4L) just fried one too. It was replaced a couple of years ago so not the original. As well, my wife mentioned that she is getting horrible mileage of late. Im wondering if "they" are spiking the fuel with something, like way too much methanol, alcohol... or its just crap fuel. And no, not all grades and brands are the same, I dont care what Google says, I know people in the fuel lab at work. I guess its time to start using additives on the regular like I do in my diesels.
Interesting, seems to be a lot of people experiencing fuel pump failures. My brothers truck (2001 F250 5.4L) just fried one too. It was replaced a couple of years ago so not the original. As well, my wife mentioned that she is getting horrible mileage of late. Im wondering if "they" are spiking the fuel with something, like way too much methanol, alcohol... or its just crap fuel. And no, not all grades and brands are the same, I dont care what Google says, I know people in the fuel lab at work. I guess its time to start using additives on the regular like I do in my diesels.
Moderator
Joined: Jul 2010
Posts: 12,050
Likes: 1,549
From: Media PA
Im hoping your issue is resolved.
Interesting, seems to be a lot of people experiencing fuel pump failures. My brothers truck (2001 F250 5.4L) just fried one too. It was replaced a couple of years ago so not the original. As well, my wife mentioned that she is getting horrible mileage of late. Im wondering if "they" are spiking the fuel with something, like way too much methanol, alcohol... or its just crap fuel. And no, not all grades and brands are the same, I dont care what Google says, I know people in the fuel lab at work. I guess its time to start using additives on the regular like I do in my diesels.
Interesting, seems to be a lot of people experiencing fuel pump failures. My brothers truck (2001 F250 5.4L) just fried one too. It was replaced a couple of years ago so not the original. As well, my wife mentioned that she is getting horrible mileage of late. Im wondering if "they" are spiking the fuel with something, like way too much methanol, alcohol... or its just crap fuel. And no, not all grades and brands are the same, I dont care what Google says, I know people in the fuel lab at work. I guess its time to start using additives on the regular like I do in my diesels.