Back Pressure Sensor

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Jul 18, 2022 | 06:20 AM

ojh

Thread Starter

Mountain Pass

Joined: Jun 2009

Posts: 197

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Back Pressure Sensor

I have a 1995 E-350 and had to take the alternator off it, I saw the tube is not connected to the exhaust back pressure sensor, I didn't know what it was and traced the tube to find it was cut off at the other end, abandoned. I read that the BPS is a pretty important device and need to get it reconnected, where does it hook to? Can I get to it on an E-350?

Jul 18, 2022 | 02:58 PM

knottyrope

Lead Driver

Joined: Apr 2016

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From: Bahstun

hooks to the pass exhaust manifold front under the alt on my F350

Jul 18, 2022 | 08:42 PM

Action4478

Hotshot

Joined: Aug 2006

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Mine has been rusted out since 06 with the EBP wired open since I bought the truck .

Jul 19, 2022 | 06:02 AM

ojh

Thread Starter

Mountain Pass

Joined: Jun 2009

Posts: 197

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Yes, I read last night in the diesel supplement and it shows it in a couple drawings, I bought a new sender & that tube. Now the question is: do I have to pull the radiator, core support and bumper to get enough access to replace it? It'd be a good time to replace the radiator hoses, wouldn't it?

Jul 19, 2022 | 09:16 PM

Harveyearlolstad

More Turbo

Joined: Aug 2019

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From: Norcal

The exhaust back pressure sensor is not that important. Especially in warmer climates. The sensor controls the exhaust back pressure valve on the exhaust side of the turbo. I eliminated the valve. The valve closes during cold weather after startup and while warming up. It warms the truck up quicker. The valve can stick closed or partially closed and cause performance issues. Many say that the valve itself restricts a little air flow even while in the open position. Even the actuator off the turbo are known to leak oil making a mess.

Jul 19, 2022 | 09:26 PM

Harveyearlolstad

More Turbo

Joined: Aug 2019

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From: Norcal

Im not sure how ur e350 is laid out under the hood but I was able to remove the tubing when i realized it was clogged with soot from my f350 exhaust manifold. I didnt have to remove anything else to get the tubing out. The tubing connects to a tapped fitting that threads into the manifold. The tubing then routes up to the sensor. BTW, I used aircraft cable hooked up to a drill to clean out the tubing after soaking overnight in a degreaser. I didnt want to pay for the new tubing for that sensor. I remember that it was overpriced. Good thing I didnt because I ended up eliminated the valve anyways.

Jul 20, 2022 | 05:41 AM

Talyn

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Joined: Oct 2003

Posts: 17,799

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From: Ashland City, TN

I have mine working cause.. Well, I had a spare sensor and made it work again, but the device rarely works on most trucks as the tube that comes from the manafold is usually clogged and sending no signal, or the sensor has long failed, and it doesn't throw a code when it fails.