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Power Stroke Excursions Technical discussion of the Ford Excursion SUV with the Power Stroke diesel.

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Old 11-06-2012, 12:06 PM   #1 (permalink)
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GPCM & GPR

So I know I have a GPCM, do I have a GPR also? The dealer gave me a part number for both. However I have read there is no GPR. So what is going on is is really the AIH?
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2000 Excursion Limited, Black, MBRP 4" stainless turbo-back, 229,000 miles, home-made Tymar intake, DP-5,
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1990 Miata, Red 199,000 miles
2005 Rubicon, Orange, 76,000 miles
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Old 11-06-2012, 12:09 PM   #2 (permalink)
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Your Ex only has a GPCM and an IAH relay. Not sure why the parts guy gave you the PN for both a GPCM and a GPR, just may be misinformed. The IAH relay rarely gets used unless you idle for extended lengths of time in cold weather. It doesn't get the workout that the GPR in the pickups do. Your GPCM is basically a solid state relay with some diagnostic brains added in to monitor individual GP function.
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Old 11-06-2012, 12:30 PM   #3 (permalink)
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So the AIH Relay does not power the GPCM in any way?
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2000 Excursion Limited, Black, MBRP 4" stainless turbo-back, 229,000 miles, home-made Tymar intake, DP-5,
Pyro,Tran.Temp & Boost gauges
1990 Miata, Red 199,000 miles
2005 Rubicon, Orange, 76,000 miles
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Old 11-06-2012, 12:42 PM   #4 (permalink)
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Correct, they're independent systems.
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First truck -- 1929 Model A Ford pickup, restored from ground up. Wish I still had it!
99.5 F250 PSD Supercab LB 4x4, ZF-6 w/SB Con OFE, 3.73LS, Boost & pyro gauges, Swamps S175/146 injectors, DP 80 HP Econo PCM (classic version), AIS, coolant filter w/"hokum" bracket, regulated return, heated mirror mod, lighted cupholder, Marinco heater plug-in.

Hard or no-start? Check Here
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Old 11-06-2012, 01:41 PM   #5 (permalink)
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Great, thanks for the info!!
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2000 Excursion Limited, Black, MBRP 4" stainless turbo-back, 229,000 miles, home-made Tymar intake, DP-5,
Pyro,Tran.Temp & Boost gauges
1990 Miata, Red 199,000 miles
2005 Rubicon, Orange, 76,000 miles
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Old 12-01-2012, 08:26 PM   #6 (permalink)
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I know they say the no Xs were built with GPRs...but mine came to me that way from Ford!

Just a side note!!!
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