EGT Sensor Going out... - Ford Powerstroke Diesel Forum
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Old 08-29-2013, 03:15 AM
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EGT Sensor Going out...

So driving home last night decided to pass a few cars in which i get the EGTs up a bit while doing so. Monitoring the EGTs on my black maxx after the pass, i notice my gauge going from say 700 degrees to 0 degrees, 90 degrees, then back to 700ish. It did the same thing this morning. I think i have the correct part number of 8C3Z-12B591-E for the EGT sensor that is on the up pipes as that is the only exhaust sensor left on the truck. I have read a few posts on this and guys talk about their trucks going into limp mode when the sensor goes out.



Would mine do the same since it is tuned?



Why didn't the ECU throw a code when the sensor is going haywire? I checked for DTC codes and nothing showed up on the black maxx.



Found out the local ford dealer has one in stock so i plan on getting one tonight. Some guys are saying to take the fender out. I think i can get to it with a crows foot or a shorty wrench. Anyone have any suggestions?



The truck is running great, BTW, just this sensor is giving me fits..



Thanks all,
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Old 08-29-2013, 06:42 AM
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it won't limp on that sensor, but yes, it sounds like it's time to replace it
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Old 08-29-2013, 07:11 AM
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Good to know. I figured as much when it was fluctuating 700+ degrees and the motor was running like a top...

Does that sensor control anything or is it purely a sensor?
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