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Exhaust Temp  RSS feed
Forum Index » 2014+ Ram 1500 (DS) EcoDiesel
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TCandee

Joined: 13/11/2015 12:34:33
Messages: 5
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I am running a GDE ECM on 2015. I put a Scan Gauge which connects to the OBDI port to read many OEM sensors. One of them is EGT. I am wondering where this sensor is on the exhaust system. I know the temp can vary greatly depending on whether it is pre turbo or post. Does anyone know where the OEM sensor is located.

My question is brought up by my observation of how easily this engine reaches egt temps of 1400-1600 degrees. If the RPMs stay under 3000 RPMs when towing the truck has lots of power and temp will stay below 1300. Unfortunately the transmission programming will automatically shift down if the accelerator is pushed to far. In my research of the GDE programming it seemed to imply that exhaust temps would be limited by the programming via defuelling. To be honest, if when in tow/haul mode the shift down point was restricted to the full throttle position then there wouldn't be a problem. Or if the shift points only allowed a max of 3200 RPMs. The truck actually has a surprising amount of towing power in this range.

Could it be that the exhaust temp that the scan gauge is reading is actuallly lower due to the placement of the thermocouple?
GreenDieselEngineering
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Joined: 10/07/2009 07:25:47
Messages: 348
Location: Southeast Michigan
There are 4 EGT sensors in the exhaust, so we would need to know which one you are monitoring. Peak sustained EGT is 1550 F. It may spike above that during a transient maneuver, but will settle back in 15-30 seconds.
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