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Help! DPFE Sensor
- Thread starter rappo26
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Dan Whitaker
One fast putty tat
- Joined
- December 24, 2001
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- City, State
- Raytown MO (Kansas City suburb)
- Year, Model & Trim Level
- No Mounty no more.
I can't remember what it stands for but it is part of the EGR system. You should be able to pick one up at any parts store.
I have been driving mine for 2 years now with a low EGR voltage code with no problems but where I live they don't have emissions inspetions
I'll get to it one of these days.
I have been driving mine for 2 years now with a low EGR voltage code with no problems but where I live they don't have emissions inspetions
I'll get to it one of these days.
- Joined
- June 16, 2003
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- Humboldt, KS
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- 2000 Mounty
Ok its a mounty so I assume v-8
Look on the passenger side exhaust manifold, for a 1/2" tube going up to throttle area. There are 2 rubber lines (look like vaccuum lines) going off of it to the DPFE sensor. Check those hoses REAL GOOD. Don't just look, get them off and check for cracking. Now look at the dpfe sensor connection area. It will sometimes melt. Take off the egr valve and clean it out good( could be sticking. Check the vaccuum lines going to the egr solenoid ( trace small vaccum line from egr valve to the solenoid for location) for leaks.
Also, an egr code can come from the COMMON ( on v-8 ) cracked header problem( exhaust leak, common on passenger side which is coincidently the egr side) low eaxhuast flow can trigger a low egr pulse. The dpfe sensor senses for differential between the 2 reference tubes. When the egr valve is opened- the pulses change. There is a small orifice located in the egr tube, between the two reference line tubes, giving the pressure differential.
In any event, with an egr code ( or any other for that matter) you are not getting full fuel efficiency from your engine.
Hope this helps you guys a bit.
Look on the passenger side exhaust manifold, for a 1/2" tube going up to throttle area. There are 2 rubber lines (look like vaccuum lines) going off of it to the DPFE sensor. Check those hoses REAL GOOD. Don't just look, get them off and check for cracking. Now look at the dpfe sensor connection area. It will sometimes melt. Take off the egr valve and clean it out good( could be sticking. Check the vaccuum lines going to the egr solenoid ( trace small vaccum line from egr valve to the solenoid for location) for leaks.
Also, an egr code can come from the COMMON ( on v-8 ) cracked header problem( exhaust leak, common on passenger side which is coincidently the egr side) low eaxhuast flow can trigger a low egr pulse. The dpfe sensor senses for differential between the 2 reference tubes. When the egr valve is opened- the pulses change. There is a small orifice located in the egr tube, between the two reference line tubes, giving the pressure differential.
In any event, with an egr code ( or any other for that matter) you are not getting full fuel efficiency from your engine.
Hope this helps you guys a bit.
- Joined
- February 8, 2003
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- 1992 XLT
This thread may better help you understand what it is and how it works. Many many times when you have an EGR system problem, it will turn up a bad or failing DPFE sensor. It's the weak link.
http://www.explorerforum.com/forums//showthread.php?t=80692
http://www.explorerforum.com/forums//showthread.php?t=80692
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