Shifting too early!!!!! - Ford Powerstroke Diesel Forum

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post #1 of 13 Old 02-05-2010, 07:15 AM Thread Starter
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Shifting too early!!!!!

What controls the shift points PCM or throttle potentiometer or what?

What do I check......this will roast the high gear clutches in a hurry?

Help!!!

2000 Ford Excursion
2001 F-250 Crew Cab Short Wheel Base
Pulling Trucks for Drag Racing
1978 mustang II 363 CI SBF
1972 Maverick 532 CI BBF
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post #2 of 13 Old 02-06-2010, 06:09 PM
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tps,throttle position sensor, vss, vehicle speed sensor, ect, engine coolant temp sensor, brake switch.
How early??? Way early means the computer thinks it's in 4wd.
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post #3 of 13 Old 02-08-2010, 04:26 PM Thread Starter
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It will be in high gear before I can make it through a red-light. So what do I do break down and take it to Ford???

2000 Ford Excursion
2001 F-250 Crew Cab Short Wheel Base
Pulling Trucks for Drag Racing
1978 mustang II 363 CI SBF
1972 Maverick 532 CI BBF
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post #4 of 13 Old 02-08-2010, 06:09 PM
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If you don't have a good local trans shop available.
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post #5 of 13 Old 02-09-2010, 05:35 AM Thread Starter
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Trans shop (performance transmission) tells me with their scanner that every thing is working properly that it is just getting the signal from the PCM too early.

2000 Ford Excursion
2001 F-250 Crew Cab Short Wheel Base
Pulling Trucks for Drag Racing
1978 mustang II 363 CI SBF
1972 Maverick 532 CI BBF
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post #6 of 13 Old 02-09-2010, 09:20 AM
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That is correct. It thinks it's in 4wd low. I've never seen the problem but have heard others haveing it.
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post #7 of 13 Old 02-09-2010, 09:24 AM
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Wow thats crazy. Look for a PCM from a local yard with matching numbers. Or take it to ford and have them re flash it for 95 bucks...

Built engine, rods, pushrods, cam, springs. Meth, turbo, injectors, fuel system, oil system. 3 disk billet, billet shafts built trans, 6.0 IC, exhaust, intake. Latter bars, gears, system, tint, HIDs. You know the typical stuff to make a 7.3 get out of its own way... dont brake.
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post #8 of 13 Old 02-09-2010, 09:57 AM Thread Starter
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PCM matching numbers purchased and on the way. I also have a P0605 (Rom Error) DTC code. I thought the truck might have been chipped or something. I pulled the PCM....took the cover off and no evidence of anything.....all silicone present and everything. I should receive it by thursday......I'll keep everyone posted.

2000 Ford Excursion
2001 F-250 Crew Cab Short Wheel Base
Pulling Trucks for Drag Racing
1978 mustang II 363 CI SBF
1972 Maverick 532 CI BBF
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post #9 of 13 Old 02-09-2010, 12:52 PM
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(took the cover off, no evidence of anything) . '96 up computers are not 'chipped' anymore. They are reprogrammed thru the diagnostic connector.
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post #10 of 13 Old 02-20-2010, 08:45 PM
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Any up dates on this? I've got a truck that does the same thing.

2002 F350 CC 8' 7.3 auto 240K miles. GTP38R, Napa Filter.

2007 Dodge 5.9 6spd

Sold 2005 F350
Sold 2000 F350
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