tps
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Joined: Aug 2003
Posts: 95
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From: Salt Lake
Re:tps
My buddy has a 98.5, and is experiencing an in and out of lockup situation around 50mph. Does anybody have pictures, or know how to clean and reset it? Please let me know. BTW it has the most recent ecm flash. Thanks, LE
Administrator
Joined: May 2002
Posts: 6,522
Likes: 4
From: Sandy, Utah
Re:tps
From the "Tech Facts" located on the main site banner.
APPS Reset Procedure
Answer: This procedure has shown to help 24 valve ISB engines. It is basically teaching the fly by wire accelerator on these trucks to reread the position of the pedal and it's limits. Most complaints this will help with is poor acceleration, improper shifting, bucking in 5 and 6 speeds. Has been known to increase fuel mileage in some instances.
1. Set parking brake
2. Disconnect negative battery cables on both batteries
3. Turn ignition key to run(to drain any remaining capacitors)
4. Let truck sit for 30 minutes( this is the recommended minimum)
5. Return ignition to OFF position
6. Reconnect both batteries and secure, not a timed event
7. Turn key to run position(not start) and depress accelerator pedal slowly all the way to the floor
8. Allow pedal to return to top position slowly
9. Turn ignition switch OFF
10.Release parking brake
If it is a 24 valve (1998.5-2002) it most likely has an APPS.
Not sure what the 2003's have.
phox
APPS Reset Procedure
Answer: This procedure has shown to help 24 valve ISB engines. It is basically teaching the fly by wire accelerator on these trucks to reread the position of the pedal and it's limits. Most complaints this will help with is poor acceleration, improper shifting, bucking in 5 and 6 speeds. Has been known to increase fuel mileage in some instances.
1. Set parking brake
2. Disconnect negative battery cables on both batteries
3. Turn ignition key to run(to drain any remaining capacitors)
4. Let truck sit for 30 minutes( this is the recommended minimum)
5. Return ignition to OFF position
6. Reconnect both batteries and secure, not a timed event
7. Turn key to run position(not start) and depress accelerator pedal slowly all the way to the floor
8. Allow pedal to return to top position slowly
9. Turn ignition switch OFF
10.Release parking brake
If it is a 24 valve (1998.5-2002) it most likely has an APPS.
Not sure what the 2003's have.
phox
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