Reset the computer / PCM / CPU ? - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 11-01-2007, 08:09 PM Thread Starter
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Reset the computer / PCM / CPU ?

On my new-to-me truck so far i've upgraded the air intake (well, slightly, at least) and upgraded exhaust. Also a new tranny. I've heard that giving the computer a reset will help by letting it re-learn the optimal settings. fact or fiction? if fact, how do you do it? unplug one or both batteries? or is there a fuse to simply pull for 15 minutes?
thanks.

Early 99 (7/98) F-350 CC 4X4 AT 7.3L 200K mi - 4" turbo back w/muffler - AFE Stage 2 - PMT1 ECM - DP 40T/DECEL/80E - dual trans coolers - HPX - Fuel CCK - Auto Meter Trans/EGT/Boost - 3.73 - stock tires
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post #2 of 7 Old 11-01-2007, 08:16 PM
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Originally Posted by samiam View Post
On my new-to-me truck so far i've upgraded the air intake (well, slightly, at least) and upgraded exhaust. Also a new tranny. I've heard that giving the computer a reset will help by letting it re-learn the optimal settings. fact or fiction? if fact, how do you do it? unplug one or both batteries? or is there a fuse to simply pull for 15 minutes?
thanks.
the PCM/TCM will learn the stratagy over time weather you reset them or not....although they learn them faster if you reset them.

to reset them....disconnect the battery cables with the headlights on, when both are disconnected...put the positive and negative battery cables together (touching) for about 45 minutes then recconect everything (obviously dont connect one battery with the other cables still touching)...that will reset KAM (Keep alive memory)
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post #3 of 7 Old 11-02-2007, 05:16 AM Thread Starter
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Talking

Thanks Marc. I'd have never guessed it was so complex a process. You're not pulling my leg, are you?

Early 99 (7/98) F-350 CC 4X4 AT 7.3L 200K mi - 4" turbo back w/muffler - AFE Stage 2 - PMT1 ECM - DP 40T/DECEL/80E - dual trans coolers - HPX - Fuel CCK - Auto Meter Trans/EGT/Boost - 3.73 - stock tires
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post #4 of 7 Old 11-02-2007, 05:37 AM
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what does doing this help? what are optimal settings its gonna relearn?

2000 F-350 7.3L,
Crew Cab, Long Bed, 4x4,
Auto, 80,000
Tinted Windows, Rain Guards
Isspro A-Pillar Gauges,
Pyro, Boost, Tranny Temp,
ZooDad MOD, S&B Intake
Foil Delete,6.0L Cup Holder,
TS 6 Pos.
Farmboys Diesel 4'' Down Pipe
Grand Rock 5'' Stack Kit to 6'' Mitre Cut Stacks
Custom Made Map Fooler

2'' Rough Country Leveling Kit
315/75/16 Dick Cepeck F-C II
"FRIENDS DON'T LET FRIENDS DRIVE JUNK"
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post #5 of 7 Old 11-02-2007, 06:04 AM Thread Starter
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Mark, any recommendations on anything specific to do after resetting it? i.e. drive under 2K RPM on flat ground.... no load.

Early 99 (7/98) F-350 CC 4X4 AT 7.3L 200K mi - 4" turbo back w/muffler - AFE Stage 2 - PMT1 ECM - DP 40T/DECEL/80E - dual trans coolers - HPX - Fuel CCK - Auto Meter Trans/EGT/Boost - 3.73 - stock tires
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post #6 of 7 Old 11-02-2007, 06:07 AM
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Quote:
Originally Posted by yamaharider103 View Post
what does doing this help? what are optimal settings its gonna relearn?
it lets the truck learn "your driving habbits"
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Originally Posted by samiam View Post
Mark, any recommendations on anything specific to do after resetting it? i.e. drive under 2K RPM on flat ground.... no load.
no....just drive it like your going to drive it normally
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post #7 of 7 Old 11-02-2007, 09:14 AM Thread Starter
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Marc, what's the significance of each step in this process? the lights on, connecting the battery cables...

Early 99 (7/98) F-350 CC 4X4 AT 7.3L 200K mi - 4" turbo back w/muffler - AFE Stage 2 - PMT1 ECM - DP 40T/DECEL/80E - dual trans coolers - HPX - Fuel CCK - Auto Meter Trans/EGT/Boost - 3.73 - stock tires
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