Zero Throttle Response!! PLEASE HELP.
Thread Starter
Driver School Candidate
Joined: Jun 2019
Posts: 42
Likes: 1
From: CO
Zero Throttle Response!! PLEASE HELP.
So I should start by saying my car was working relatively fine with the only code showing being P2757.
A month ago my alternator went out so I replaced that.
2 days ago I changed the transmission oil and the Solenoid to try and clear that P2757 code.
yesterday my throttle response was intermittent but mostly good. Last night I took the battery out for a couple hours after trying to clear the check engine light with an OBD2 and it not working.
This morning 99% throttle response gone. Stuck in first gear. Codes showing are P0348, P0751
A month ago my alternator went out so I replaced that.
2 days ago I changed the transmission oil and the Solenoid to try and clear that P2757 code.
yesterday my throttle response was intermittent but mostly good. Last night I took the battery out for a couple hours after trying to clear the check engine light with an OBD2 and it not working.
This morning 99% throttle response gone. Stuck in first gear. Codes showing are P0348, P0751
I would start with the cam shaft sensor on bank 2, sounds like it has a wiring fault.
As for the trans, I wouldn't think this would put it in limp mode but it might?
How many miles, which car, what year, and what did the fluid look like when you dumped it?
What people fail to see is this; the computers on board do not know everything. For the most part, they give a command and wait and see if that command is followed. The exceptions are wiring faults where they sense a circuit is damaged.
Point; if the ECU and TCU give the command to lock the torque converter and the engine rpm does not match the transmission input shaft (turbine speed), the ecu/tcu throw a code related to the command given.
P2757 is thrown AND THAT DOES NOT MEAN the Solenoid failed! It means the TCC was unable to follow the command. It means if you don't test the solenoid to verify its function you're likely not going to know if it is the problem. There is a lot more to transmissions than a pack of solenoids.....
In the future EVERYONE please POST THE OBD CODE(S)!!!! WE shouldn't have to look them up!!!
As for the trans, I wouldn't think this would put it in limp mode but it might?
How many miles, which car, what year, and what did the fluid look like when you dumped it?
What people fail to see is this; the computers on board do not know everything. For the most part, they give a command and wait and see if that command is followed. The exceptions are wiring faults where they sense a circuit is damaged.
Point; if the ECU and TCU give the command to lock the torque converter and the engine rpm does not match the transmission input shaft (turbine speed), the ecu/tcu throw a code related to the command given.
P2757 is thrown AND THAT DOES NOT MEAN the Solenoid failed! It means the TCC was unable to follow the command. It means if you don't test the solenoid to verify its function you're likely not going to know if it is the problem. There is a lot more to transmissions than a pack of solenoids.....
In the future EVERYONE please POST THE OBD CODE(S)!!!! WE shouldn't have to look them up!!!
FWIW - the same logic applies to the P0751 code. You need to test that component. It is what is keeping it locked in 1st gear. Verify its connected. Not shorted, not open, apply 12v and verify it changes state.
Thread Starter
Driver School Candidate
Joined: Jun 2019
Posts: 42
Likes: 1
From: CO
I would start with the cam shaft sensor on bank 2, sounds like it has a wiring fault.
As for the trans, I wouldn't think this would put it in limp mode but it might?
How many miles, which car, what year, and what did the fluid look like when you dumped it?
What people fail to see is this; the computers on board do not know everything. For the most part, they give a command and wait and see if that command is followed. The exceptions are wiring faults where they sense a circuit is damaged.
Point; if the ECU and TCU give the command to lock the torque converter and the engine rpm does not match the transmission input shaft (turbine speed), the ecu/tcu throw a code related to the command given.
P2757 is thrown AND THAT DOES NOT MEAN the Solenoid failed! It means the TCC was unable to follow the command. It means if you don't test the solenoid to verify its function you're likely not going to know if it is the problem. There is a lot more to transmissions than a pack of solenoids.....
In the future EVERYONE please POST THE OBD CODE(S)!!!! WE shouldn't have to look them up!!!
As for the trans, I wouldn't think this would put it in limp mode but it might?
How many miles, which car, what year, and what did the fluid look like when you dumped it?
What people fail to see is this; the computers on board do not know everything. For the most part, they give a command and wait and see if that command is followed. The exceptions are wiring faults where they sense a circuit is damaged.
Point; if the ECU and TCU give the command to lock the torque converter and the engine rpm does not match the transmission input shaft (turbine speed), the ecu/tcu throw a code related to the command given.
P2757 is thrown AND THAT DOES NOT MEAN the Solenoid failed! It means the TCC was unable to follow the command. It means if you don't test the solenoid to verify its function you're likely not going to know if it is the problem. There is a lot more to transmissions than a pack of solenoids.....
In the future EVERYONE please POST THE OBD CODE(S)!!!! WE shouldn't have to look them up!!!
Thread Starter
Driver School Candidate
Joined: Jun 2019
Posts: 42
Likes: 1
From: CO
Again how do I test it. Sorry never worked on cars before this one.
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