Should I insulate the DPFE sensor?
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From: Wyoming
Should I insulate the DPFE sensor?
Had a new exhaust back pressure sensor put in last fall, and the 6.0L had run flawlessly all summer in my '06 E-450. Now it's starting it's old tricks, as described here:
https://www.ford-trucks.com/forums/1...riangle-5.html
The weird negative boost numbers on the Scan gauge II (BST) and super high EBP numbers all point to the DPFE sensor. However, the problems only start once the rig has been running for +30 minutes, so is it a heat-related failure of the DPFE? The sensor is tucked in deep on the E-450, and I'll have to take the dog house off to get at the sensor. If it was carbon buildup, wouldn't it run like crap right out the driveway? I'm thinking of wrapping the sensor up with some insulation, maybe even extend the insulation down the wire harness a bit too.
https://www.ford-trucks.com/forums/1...riangle-5.html
The weird negative boost numbers on the Scan gauge II (BST) and super high EBP numbers all point to the DPFE sensor. However, the problems only start once the rig has been running for +30 minutes, so is it a heat-related failure of the DPFE? The sensor is tucked in deep on the E-450, and I'll have to take the dog house off to get at the sensor. If it was carbon buildup, wouldn't it run like crap right out the driveway? I'm thinking of wrapping the sensor up with some insulation, maybe even extend the insulation down the wire harness a bit too.
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From: Wyoming
Correct, Mr. Wedge. I call it the EBP sensor, but Ford calls it the DPFE sensor when I look it up. I think when the EBP numbers from the sensor go ugly, it gives the turbo vane control bad info.
I have not looked at o-rings. This sensor is absolutely buried on a van (E-450), and I'm not pulling the dog house on the engine until I have a replacement sensor in hand. It's impossible to access from the front of the engine.
My concern with insulating this sensor is perhaps accelerating crud buildup. If it stays hotter maybe that keeps the tiny tubing to the sensor cleaner, but the heat might be screwing up the sensor, connector, or wiring.
I have not looked at o-rings. This sensor is absolutely buried on a van (E-450), and I'm not pulling the dog house on the engine until I have a replacement sensor in hand. It's impossible to access from the front of the engine.
My concern with insulating this sensor is perhaps accelerating crud buildup. If it stays hotter maybe that keeps the tiny tubing to the sensor cleaner, but the heat might be screwing up the sensor, connector, or wiring.
Laughing Gas
Joined: Jan 2007
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make sure you get only true motorcraft sensors,when you change that sensor next time,look on the plug before you plug it in,make sure it has the rubber oring on it,if it is gone look at the plug itself,i bet you have some plastic around the prongs missing and stuck in the old sensor,every time you plugin/unplug that sensor you weaken the prongs if that rubber seal is missing,it stops vibration and throws diff readings.
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From: Wyoming
I'll check the tubing, and run some wire down it to clean it.
The plastic / prong issue - how is that heat related? I'm pretty sure the kit I ordered won't be true Motorcraft, but then again that's two EBP sensors gone bad so far. I've got a kit coming with a new connector as well as the sensor and some splices. I'll inspect the plug to see if it is going south.
I appreciate the replies, but the original question is whether or not to insulate?
The plastic / prong issue - how is that heat related? I'm pretty sure the kit I ordered won't be true Motorcraft, but then again that's two EBP sensors gone bad so far. I've got a kit coming with a new connector as well as the sensor and some splices. I'll inspect the plug to see if it is going south.
I appreciate the replies, but the original question is whether or not to insulate?
Fleet Owner
Joined: Apr 2012
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From: Spanaway
Don't think it will make one bit of difference if you do or not.
After you put the new pigtail in take the old one apart so that
you have the wires out where you can take a 10X and look them
over as you bend and flex then near where then go into the locking
clip on the side where the wires come in at.
After you put the new pigtail in take the old one apart so that
you have the wires out where you can take a 10X and look them
over as you bend and flex then near where then go into the locking
clip on the side where the wires come in at.
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