fried sensor
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From: madison sd
fried sensor
I own a 1999 explorer sport. The check engine light came on and after checking under the hood it is obvious why. The sensor located on the driver side of the fuel injection is fried. I'm not sure what this sensor does but it had two vacuum hoses connected to it but now there is nowhere for them to connect as the sensor is really fried. Main questions are can I assume (yes I know what the first three letters of ***ume are) that the sensor went bad or is there something that would make this sensor fail in this manner? What is this sensor called, what does it do, and what is the cost of replacement? I live in a very small town and there is nowhere to have the code pulled unless I pay the ford place to do this. 4.0 sohv engine.FRIED SENSOR NEED HELP
Last edited by jcurrie; Aug 7, 2005 at 10:53 AM.
Cargo Master
Joined: Aug 2003
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From: BC Canada
the only sensor I can think of with 2 vacuam lines on it, is the EGR solonoid, this can be verified by following the vacuam lines..... but when you say "FRIED" what are you talking about, engine heat or electrical as the cause.
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From: madison sd
Electrical. I took the truck to NAPA and they don't know what the sensor is. He first thought that it was a MAP sensor but the book doesn't list a MAP sensor for my truck. I don't believe that it's a EGR as a EGR hooks to the exhaust I believe. This is a flat rectangular shaped electrical sensor. The plug is on the side nearest to the fender wall and the sensor is just behind the ac compressor and mounted on the intake manifold.
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From: madison sd
Thanks Don, your questions made me get off my lazy rear and I think I have found out what happened. What I thought were vacuum hoses aren't. They are heavy rubber hoses that run to a pipe coming off the exhaust and then run up to the sensor. One of the hoses rubbed a hole in a spark plug wire and I believe this is where the heat came from (hot exhaust gases ignited by the spark plug wire ?) The one hose is burnt inside and has several holes in it. The other has no damage to it but has no place to tie into as the sensor (or what ever it is) is melted where the two hoses plug into it. Does this control the EGR valve?
Thanks again and please let me know what you think.
Thanks again and please let me know what you think.
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Joined: Aug 2003
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From: BC Canada
Well Mr jcurrie,
yes indeed that would be the DPFE which senses the differentiial pressure in the exhaust manifold, and when energized it sends a signal to the EGR solonoid which then opens and allows vacuam to be applied to the mechanical egr valve. Thus sending exhaust gasses into the intake manifold, which helps cool the engine and burns off any residual hydrocarbons.
The last time I checked the part cost about $45.00 in Canada, make sure you get the updated part, there is a TSB on this part..
yes indeed that would be the DPFE which senses the differentiial pressure in the exhaust manifold, and when energized it sends a signal to the EGR solonoid which then opens and allows vacuam to be applied to the mechanical egr valve. Thus sending exhaust gasses into the intake manifold, which helps cool the engine and burns off any residual hydrocarbons.
The last time I checked the part cost about $45.00 in Canada, make sure you get the updated part, there is a TSB on this part..
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