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Old 01-29-2014, 05:30 AM
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exhaust pressure sensor

Good morning I just started my truck (2000 )7.3 and service engine soon came on code reader pulled up 2 first one says ecm has detected a signal error from EP sensor faulty ep sensor my question is where is it and is it hard to change ? Second one was a glow plug which I already thought from the morning smoke when its cold its says cylinder 6 I believe that's the third one back on the drivers side am I correct? thank you .
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Old 01-29-2014, 06:55 AM
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The exhaust backpressure sensor is mounted on the front of the engine in front of the HPOP. There will be a steel tube that runs from the passenger side exhaust manifold up to the sensor. If this tube becomes plugged with soot, which it does, cracks or the sensor is malfunctioning, it will affect the fueling of the engine and the fuel economy will go down dramatically. Don't know about the sensor, but I had to replace my tube and got it from Riffraff - good price, great service. If the tube is plugged you may be able to clean it out with a piece of wire or the nylon string from a weedwacker. To remove the sensor/tube, you will need some crow's foot wrenches. When I put mine back together, I used a bit of anti seize on the threads. Just be careful not to get it in the sensor

You are correct on cylinder #6. It is the third from the front on the drivers side.

Hope this helps
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