Sluggish acceleration from a stop
07-30-2022 | 10:41 PM
#11
Thread Starter
Senior Member
Joined: 08-13-2010
Posts: 131
From: Memphis, TN
No, the behavior has been about the same, before and after the transmission rebuild. I wish I had a GoPro (or at least a head mount for my phone). I would record it.
07-31-2022 | 03:34 PM
#12
Senior Member
Joined: 12-05-2014
Posts: 2,683
From: Northern Ohio
In the OP, the OP said, “At highway speeds, it will quickly go from 55-75…” but we seem to have forgotten that. I don’t think this is an engine power problem. I don’t know much about how this transmission works, but have we somehow eliminate not going into 1st gear???
08-01-2022 | 10:10 AM
#14
Senior Member
Joined: 03-29-2022
Posts: 1,100
From: Davison MI
In the OP, the OP said, “At highway speeds, it will quickly go from 55-75…” but we seem to have forgotten that. I don’t think this is an engine power problem. I don’t know much about how this transmission works, but have we somehow eliminate not going into 1st gear???
08-01-2022 | 03:31 PM
#17
Thread Starter
Senior Member
Joined: 08-13-2010
Posts: 131
From: Memphis, TN
Once again, the behavior has been the same before and after a transmission rebuild. Before the rebuild (detailed in another post) it would jerk at city speeds and almost die if left in gear at a stop light.
Saying it creeps in the original post might have been too much. It will drive ok from take off, if you take it slow (driving down the driveway and onto the county road). It doesn't feel like a car that doesn't have a first gear (and I think the shop would have noticed if it didn't have first gear when they finished it). But if I need to take off from a light, or pull onto the highway to beat a car coming the other direction, or onto an on ramp, I can push the pedal halfway down and there is a delay before the acceleration kicks in.
Thanks.
Saying it creeps in the original post might have been too much. It will drive ok from take off, if you take it slow (driving down the driveway and onto the county road). It doesn't feel like a car that doesn't have a first gear (and I think the shop would have noticed if it didn't have first gear when they finished it). But if I need to take off from a light, or pull onto the highway to beat a car coming the other direction, or onto an on ramp, I can push the pedal halfway down and there is a delay before the acceleration kicks in.
Thanks.
08-01-2022 | 06:59 PM
#20
Senior Member
Joined: 12-05-2014
Posts: 2,683
From: Northern Ohio
The codes that came out in that thread were:
- P0700 Transmission Control Module (TCM) Requested MIL Illumination
- P0742 Torque Converter Clutch (TCC) System - Stuck On
- P0842 Transmission Fluid Pressure (TFP) Sensor Circuit Low Voltage
From a green light, I can press the gas halfway down and it will creep forward for half a block or so. If I mash the gas there will still be a delay, but it will kick in a little quicker. At highway speeds, it will quickly go from 55-75, but that low speed acceleration is getting annoying, borderline dangerous.
Once again, the behavior has been the same before and after a transmission rebuild. Before the rebuild (detailed in another post) it would jerk at city speeds and almost die if left in gear at a stop light.
Saying it creeps in the original post might have been too much. It will drive ok from take off, if you take it slow (driving down the driveway and onto the county road). It doesn't feel like a car that doesn't have a first gear (and I think the shop would have noticed if it didn't have first gear when they finished it). But if I need to take off from a light, or pull onto the highway to beat a car coming the other direction, or onto an on ramp, I can push the pedal halfway down and there is a delay before the acceleration kicks in.
Thanks.
Saying it creeps in the original post might have been too much. It will drive ok from take off, if you take it slow (driving down the driveway and onto the county road). It doesn't feel like a car that doesn't have a first gear (and I think the shop would have noticed if it didn't have first gear when they finished it). But if I need to take off from a light, or pull onto the highway to beat a car coming the other direction, or onto an on ramp, I can push the pedal halfway down and there is a delay before the acceleration kicks in.
Thanks.
I don’t see how those codes were addressed and I bet they’re still there because nothing has improved and I don’t think rebuilding the transmission would fix it. I don’t know enough about how the transmission controls work but couldn’t those codes be caused by external wiring? If so, it would explain why rebuilding the transmission did nothing.
Nothing wrong with barking up the wrong tree. There might be a squirrel up there, too.
Last edited by PulpFriction; 08-05-2022 at 02:59 AM.