Attention: TDR Forum Junkies My 2001, truck starts and runs. Then it takes off, running on it's own, RPM's up and down all by it's self. Seems to be a computer short! It starts, it runs, I can move it out in the yard, can't touch the pedal, it may idle or take off on a rampage and try to ram a building.
I thought it may be an apps thing, I replaced the apps and reset the computer by disconnecting the batteries for 2 hours. It's still surging on it's own and throwing codes. not driveable.
I posted earlier todayMy 2001 acted up last night. I needed to tow a friend back to my garage for repairs in a warmer atmosphere. We were at a light, foot on the brake... engine surged real hard repeatedly, scary hard, like gonna take off and run the red light. Took it out for a test drive. It revs up in neutral but won't go over 1500 rpms in drive. Surges when not touching the pedal, get a dead pedal feeling when trying to accelerate.
Codes are 113, 121, 118, 238, 343, 523, 563, 622, 753, 1475, 1693, 1765.
Most are voltage codes, excessive voltage to ECM, excessive voltage to gauges, etc. The transmission codes are normal since the full DTT trans was installed. Fuel pressure is normal 15 p. s. i. .
I've notice the APPS has been acting up when cold or damp, usually straightens itself out after it warms up during snow plowing. It has a dead spot around 70mph and will hesitate, then take off as I move the pedal around. It does this in lower gears as well, hesitate, then surge as the pedal is moved.
Should I start with the APPS or look at the wiring to the new alternator? Alternator was installed in October, and I had a re-route a wire and it's now tight against the alt. housing.
Maybe I'll start with a piece of rubber around that wire and then go in and clean the APPS connection AGAIN! I cleaned it and used dielectric grease last spring.
Anyone else have any ideas? Need to plow snow tonight and tomorrow. Can't have it trying to accelerate when I'm plowing, I often back up close to parked cars & such.
Thanks in advance.
I thought it may be an apps thing, I replaced the apps and reset the computer by disconnecting the batteries for 2 hours. It's still surging on it's own and throwing codes. not driveable.
I posted earlier todayMy 2001 acted up last night. I needed to tow a friend back to my garage for repairs in a warmer atmosphere. We were at a light, foot on the brake... engine surged real hard repeatedly, scary hard, like gonna take off and run the red light. Took it out for a test drive. It revs up in neutral but won't go over 1500 rpms in drive. Surges when not touching the pedal, get a dead pedal feeling when trying to accelerate.
Codes are 113, 121, 118, 238, 343, 523, 563, 622, 753, 1475, 1693, 1765.
Most are voltage codes, excessive voltage to ECM, excessive voltage to gauges, etc. The transmission codes are normal since the full DTT trans was installed. Fuel pressure is normal 15 p. s. i. .
I've notice the APPS has been acting up when cold or damp, usually straightens itself out after it warms up during snow plowing. It has a dead spot around 70mph and will hesitate, then take off as I move the pedal around. It does this in lower gears as well, hesitate, then surge as the pedal is moved.
Should I start with the APPS or look at the wiring to the new alternator? Alternator was installed in October, and I had a re-route a wire and it's now tight against the alt. housing.
Maybe I'll start with a piece of rubber around that wire and then go in and clean the APPS connection AGAIN! I cleaned it and used dielectric grease last spring.
Anyone else have any ideas? Need to plow snow tonight and tomorrow. Can't have it trying to accelerate when I'm plowing, I often back up close to parked cars & such.
Thanks in advance.
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