dpfe sensor location?
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dpfe sensor location?
On a 96 f150 5.0 efi engine where is the dpfe sensor located? I am getting 401 errors and the evr valve never sends vaccum to the egr valve. Some one suggested that the dpfe sensor was probably the fault. Any help appreciated. The hayes manual is useless in this diagnosis. It lists me having a position sensor on my model on the egr valve but that isn't the case.
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Found this with a GOOGLE search. Don't know if it will help or not, but looked interesting. Will look again for location of DPFE. This article says like 86 - 94??
http://www.niehoff.com/techtips/n_sen.html
guzzler96
http://www.niehoff.com/techtips/n_sen.html
guzzler96
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the 96 doesn't have one. On 92-95, the DPFE is on top of the EGR valve. Your EGR valve doesn't have a sensor on top of it.
On the 96, we have a Egr Pressure Feedback Sensor, it is on the driver side of the throtttle body attached to a bracket, and it is just under and to the right of the plastic cover that sheilds the throttle cable assembly. There should be two hoses running into the bottom of it that lead back under the throttle body to the EGR supply tube.
Good luck.
You might check the EGR valve itself (be careful not to brake the supply tube = $400 to fix since you have to remove the intake manifold). Also check the EGR Vacuum regulator. Follow the Green vacuum line from the top of your EGR to the regulator. It is on the Drivers side of the engine, infront of the coil, and has an electrical solinoid and another vacuum line (black) running into it. The EGR vacuum regulator is a dealer only part, I think.
On the 96, we have a Egr Pressure Feedback Sensor, it is on the driver side of the throtttle body attached to a bracket, and it is just under and to the right of the plastic cover that sheilds the throttle cable assembly. There should be two hoses running into the bottom of it that lead back under the throttle body to the EGR supply tube.
Good luck.
You might check the EGR valve itself (be careful not to brake the supply tube = $400 to fix since you have to remove the intake manifold). Also check the EGR Vacuum regulator. Follow the Green vacuum line from the top of your EGR to the regulator. It is on the Drivers side of the engine, infront of the coil, and has an electrical solinoid and another vacuum line (black) running into it. The EGR vacuum regulator is a dealer only part, I think.
Last edited by naustin; Jan 26, 2005 at 11:20 AM.
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Thanks naustin,
I jumped out the evr valve and was able to get good vaccum to the egr(almost stalled in idle). I monitored the evr to see if It was ever being energized and never got a completed circuit so I never get the egr to open.I even put a vaccum gauge on the line going into the egr and never got vaccum. Stands to reason that sensor must be bad.Thanks for the info on the location as well. They sure can pack alot in a small space making it hard to see.
I jumped out the evr valve and was able to get good vaccum to the egr(almost stalled in idle). I monitored the evr to see if It was ever being energized and never got a completed circuit so I never get the egr to open.I even put a vaccum gauge on the line going into the egr and never got vaccum. Stands to reason that sensor must be bad.Thanks for the info on the location as well. They sure can pack alot in a small space making it hard to see.
Last edited by dwimood; Jan 26, 2005 at 12:02 PM.
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naustin is correct I just replaced mine. You need to clean or buy new vacumn lines to the sensor because the white corrosion is what gets in the sensor making it malfunction.. The molded lines are expensive but my dealer sold it in bulk made out of the same stuff and alot cheaper... By the way you may not have vacumn at the egr at idle it has vacumn under a load...
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Thanks I will replace the lines. I did check the vaccum under load as well as idle and the evr never energized and sent vaccum to the egr. I replaced the dpfe sensor and reset the system and so far so good . Thanks for all the feed back guys.
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