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It is currently Thu Apr 18, 2024 3:54 am
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F-250 7.3 L diesel SES light AGAIN!
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Rustywrench
Location: Olympia Joined: Fri Jun 7, 2019 Posts: 258
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Do a search for "Ford Powerstroke dead pedal". Throttle pedal position sensor. Pretty common problem.
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Thu Aug 08, 2019 6:55 pm |
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Selador
Site Supporter
Location: Index Joined: Thu Aug 23, 2012 Posts: 12963
Real Name: Jeff
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Rustywrench wrote: Do a search for "Ford Powerstroke dead pedal". Throttle pedal position sensor. Pretty common problem. Yup. On my truck it's called the FIPL. On everyone else's vehicles, it's called the TPS or Throttle Position Sensor. And seriously, all of the above symptoms point to it. delliottg wrote: Selador wrote: Does this have a FIPL? (Ford diesel truck's equivalent to a TPS.)
All of that including the engine light, sounds like the FIPL is bad or at least badly out of adjustment. No idea what that is. See above.
_________________ -Jeff
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Thu Aug 08, 2019 7:10 pm |
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delliottg
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Location: Duvall Joined: Thu Mar 17, 2011 Posts: 4604
Real Name: David
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Selador wrote: Rustywrench wrote: Do a search for "Ford Powerstroke dead pedal". Throttle pedal position sensor. Pretty common problem. Yup. On my truck it's called the FIPL. On everyone else's vehicles, it's called the TPS or Throttle Position Sensor. And seriously, all of the above symptoms point to it. delliottg wrote: Selador wrote: Does this have a FIPL? (Ford diesel truck's equivalent to a TPS.)
All of that including the engine light, sounds like the FIPL is bad or at least badly out of adjustment. No idea what that is. See above. Thanks for the information guys. After a bunch of reading, I'm going to go with a bad/failing throttle sensor as Jeff & others surmised. I've ordered a new sensor off of Amazon, should be here tomorrow, and I can install & test it. Crossing my fingers it's as simple a fix as it looks.
_________________David Unique Treen
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Fri Aug 09, 2019 7:19 am |
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Rustywrench
Location: Olympia Joined: Fri Jun 7, 2019 Posts: 258
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David, another common fail that will leave you on side of road is cam position sensor. I carried a spare in glove box of my 95 F350.and a wrench. Cheap insurance .
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Fri Aug 09, 2019 7:34 am |
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delliottg
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Location: Duvall Joined: Thu Mar 17, 2011 Posts: 4604
Real Name: David
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Rustywrench wrote: David, another common fail that will leave you on side of road is cam position sensor. I carried a spare in glove box of my 95 F350.and a wrench. Cheap insurance . I'll look into that as well, thanks!
_________________David Unique Treen
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Fri Aug 09, 2019 8:15 am |
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Selador
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Location: Index Joined: Thu Aug 23, 2012 Posts: 12963
Real Name: Jeff
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Rustywrench wrote: David, another common fail that will leave you on side of road is cam position sensor. I carried a spare in glove box of my 95 F350.and a wrench. Cheap insurance . Good thinking. But I don't think the CPS affects the transmission the way the FIPL does. delliottg wrote: Thanks for the information guys. After a bunch of reading, I'm going to go with a bad/failing throttle sensor as Jeff & others surmised. I've ordered a new sensor off of Amazon, should be here tomorrow, and I can install & test it.
Crossing my fingers it's as simple a fix as it looks. Carefully mark in as many ways as you can, before you take the old one off. Maybe try to take a video or some pictures from every angle. If you can get the new one back on there exactly the way the old one was on, you just might not have to adjust it...
_________________ -Jeff
How can I help you, and/or make you smile, today?
You are entitled to your opinion. You are not entitled to tell me what mine must be.
Do justice. Love mercy.
“I would rather have questions that can't be answered than answers that can't be questioned.” ~ Richard P. Feynman
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Fri Aug 09, 2019 9:47 am |
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PW45
Site Supporter
Location: Maple Valley Joined: Thu Feb 21, 2013 Posts: 845
Real Name: PW
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Occam's razor says loose vacuum hose, is why it's intermittent.
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Fri Aug 09, 2019 11:09 am |
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Old Growth
Site Supporter
Location: Nisqually Valley Joined: Wed Oct 5, 2016 Posts: 4834
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PW45 wrote: Occam's razor says loose vacuum hose, is why it's intermittent. Burns oil, not gasoline, says the woodsman.
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Fri Aug 09, 2019 11:32 am |
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Selador
Site Supporter
Location: Index Joined: Thu Aug 23, 2012 Posts: 12963
Real Name: Jeff
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Old Growth wrote: PW45 wrote: Occam's razor says loose vacuum hose, is why it's intermittent. Burns oil, not gasoline, says the woodsman. Mine has a vacuum pump. Recently replaced the rusted out, collapsed tin can they used for a 'holding tank'. Thing wasn't a reservoir, it was just one big vacuum leak. With one I made myself from PVC and ABS. That new 'can' will outlive me...
_________________ -Jeff
How can I help you, and/or make you smile, today?
You are entitled to your opinion. You are not entitled to tell me what mine must be.
Do justice. Love mercy.
“I would rather have questions that can't be answered than answers that can't be questioned.” ~ Richard P. Feynman
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Fri Aug 09, 2019 12:06 pm |
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Rustywrench
Location: Olympia Joined: Fri Jun 7, 2019 Posts: 258
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Well, they do have a baro sensor. Sense manifold pressure, ie; boost. Early powerstroke had problems with the hose. 1999 model I don't think so. I suspect transmission, not tranny concern, related to throttle pos sensor. A "tranny" concern could happen after drinking too much in Thailand. Cam sensor failure would be no start, stalling, tachometer inop. 2 cents worth from ex Ford mechanic.
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Fri Aug 09, 2019 1:07 pm |
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Old Growth
Site Supporter
Location: Nisqually Valley Joined: Wed Oct 5, 2016 Posts: 4834
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Selador wrote: Old Growth wrote: PW45 wrote: Occam's razor says loose vacuum hose, is why it's intermittent. Burns oil, not gasoline, says the woodsman. Mine has a vacuum pump. Recently replaced the rusted out, collapsed tin can they used for a 'holding tank'. Thing wasn't a reservoir, it was just one big vacuum leak. With one I made myself from PVC and ABS. That new 'can' will outlive me... I dont think a vacuum pump leak would cause runnability issues with the engine like on a gasser.
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Fri Aug 09, 2019 2:31 pm |
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Selador
Site Supporter
Location: Index Joined: Thu Aug 23, 2012 Posts: 12963
Real Name: Jeff
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Old Growth wrote: Selador wrote: Old Growth wrote: PW45 wrote: Occam's razor says loose vacuum hose, is why it's intermittent. Burns oil, not gasoline, says the woodsman. Mine has a vacuum pump. Recently replaced the rusted out, collapsed tin can they used for a 'holding tank'. Thing wasn't a reservoir, it was just one big vacuum leak. With one I made myself from PVC and ABS. That new 'can' will outlive me... I dont think a vacuum pump leak would cause runnability issues with the engine like on a gasser. I don't think so, either. But then, I still haven't checked out everything that is run by vacuum on my truck, yet. Vac lines all over the place!
_________________ -Jeff
How can I help you, and/or make you smile, today?
You are entitled to your opinion. You are not entitled to tell me what mine must be.
Do justice. Love mercy.
“I would rather have questions that can't be answered than answers that can't be questioned.” ~ Richard P. Feynman
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Fri Aug 09, 2019 2:36 pm |
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delliottg
Site Supporter
Location: Duvall Joined: Thu Mar 17, 2011 Posts: 4604
Real Name: David
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OK, so I'm now wondering if I bought the wrong thing. Are there two sensors for the throttle? One inside the engine compartment attached to the throttle body, and another on the accelerator linkage? I can see one (or what looks like one) above the accelerator linkage in the cab, but videos (and I can't find a 1999 specific video) seems to show a different location for the sensor in the engine compartment attached to the actual throttle body, right next to the butterfly valve.
This video shows the accelerator linkage one I'm talking about. Can't seem to get the YouTube link to work properly. [youtube1]https://youtu.be/uflxLZcEKE4[/youtube1]
_________________David Unique Treen
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Sat Aug 10, 2019 2:35 pm |
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Rustywrench
Location: Olympia Joined: Fri Jun 7, 2019 Posts: 258
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Your 7.3 Diesel is a powerstroke. It is computer controlled. Some of the information shared by others here does not apply to 1999 7.3 DI. A 7.3 Direct Injection Diesel, Is what you have. 7.3 IDI, indirect injection is old style, with sensor mounted on injection pump, on engine, called FIPL. So, the sensor inside the cab on throttle pedal is the only one your truck has. Hope this helps.
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Sat Aug 10, 2019 3:54 pm |
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delliottg
Site Supporter
Location: Duvall Joined: Thu Mar 17, 2011 Posts: 4604
Real Name: David
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Rustywrench wrote: Your 7.3 Diesel is a powerstroke. It is computer controlled. Some of the information shared by others here does not apply to 1999 7.3 DI. A 7.3 Direct Injection Diesel, Is what you have. 7.3 IDI, indirect injection is old style, with sensor mounted on injection pump, on engine, called FIPL. So, the sensor inside the cab on throttle pedal is the only one your truck has. Hope this helps. Thanks! That makes me feel better!
_________________David Unique Treen
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Sat Aug 10, 2019 3:59 pm |
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