Been chasing this issue for a minute now on my daily driver and have elected to throw the parts cannon at the truck until it’s running better or ends up with an LS swapped in. Observations below.
After start up (both cold and warm) and putting the truck into Drive (as indicated by my working D light) the truck fails to accelerate and runs awful. By depressing the skinny pedal to the floor the problem is solved. Revs like crazy, takes off like a rocket and runs fine until the process is repeated (parked for variable length of time, startup, Drive selected, crappy engine performance).
The diagnosing of this issue appears to be beyond my limited abilities. To date, I have fired the below ammo from my parts cannon to no avail:
Cap, rotor and coil wire
Fuel Pump Relay
EFI Relay
Fuel Pump
ECU
Parts cannon ammo on deck:
Rebuilt injectors
Used (good) wiring harness
Throttle position sensor
I’m assuming, at this point that it’s either the harness or the TPS.
Tips appreciated and flaming expected.
Appreciate the read!
Edit for ease of read: As for recent work, Jeez... Had the tranny out to do the rear main. Guide button thing on the torque converter was broken and missing and had to source a used one from a buddy. Went back together and ran like a top. Went on a 3day glamping trip in the NE Georgia Mountains and the truck basically s*** the bed on the trail. Short version there is that the coil wire had somehow become partially dislodged from the distributor cap. Replaced the coil wire and ran fine for a few days. Now we are somewhat back to where I started.
Mileage is currently at 193k and all maintenance has been done to the best of my wallet's ability.
After start up (both cold and warm) and putting the truck into Drive (as indicated by my working D light) the truck fails to accelerate and runs awful. By depressing the skinny pedal to the floor the problem is solved. Revs like crazy, takes off like a rocket and runs fine until the process is repeated (parked for variable length of time, startup, Drive selected, crappy engine performance).
The diagnosing of this issue appears to be beyond my limited abilities. To date, I have fired the below ammo from my parts cannon to no avail:
Cap, rotor and coil wire
Fuel Pump Relay
EFI Relay
Fuel Pump
ECU
Parts cannon ammo on deck:
Rebuilt injectors
Used (good) wiring harness
Throttle position sensor
I’m assuming, at this point that it’s either the harness or the TPS.
Tips appreciated and flaming expected.
Appreciate the read!
Edit for ease of read: As for recent work, Jeez... Had the tranny out to do the rear main. Guide button thing on the torque converter was broken and missing and had to source a used one from a buddy. Went back together and ran like a top. Went on a 3day glamping trip in the NE Georgia Mountains and the truck basically s*** the bed on the trail. Short version there is that the coil wire had somehow become partially dislodged from the distributor cap. Replaced the coil wire and ran fine for a few days. Now we are somewhat back to where I started.
Mileage is currently at 193k and all maintenance has been done to the best of my wallet's ability.
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