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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

What is this thing?

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Old Feb 26, 2004 | 02:09 PM
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MGT351
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From: Munford Tn
What is this thing?

I just aqquired a 70 SWB Ranger XLT that i plan on building, I was stripping it down and found a plate in the driverside door jam on the cab. it is not the door jam switch because it has this too. the plate has 2 screws bolting it in and a 2 wire connection going into the dash, It was unplugged though. It has a ford part number on it and says STEMCO on it. Anybody have any idea what it could be?
 
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Old Feb 26, 2004 | 02:20 PM
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Let me guess, another F100?

It's a temp. sensor, part of the transmission regulated spark (TRS) system. You don't want it or need it.

That's the second one this week!
 
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Old Feb 26, 2004 | 02:32 PM
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Here's a diagram of the system, basically it's a glorified NOx device.

 
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Old Feb 26, 2004 | 05:46 PM
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Thanks fi the info it had me puzzled
 
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