I changed the 3-4 shift soleniod but now i dont have any gear but 2nd and before we had 1-3 just not over drive. what could have went wrong?
There is no code that tells you to replace the shift sdolenoid. There is a code (P0783) That has a generic description of "3-4 Shift Malfunction". Please note that there are several things that can cause this code. This code DOES NOT mean to replace the shift solenoid without first diagnosing the other possible causes of this code.
P0753 is for the "3-4 Shift Solenoid/Transmission Relay Circuit" If this is the code you had, please note that this code is a CIRCUIT code. The circuit includes the 3-4 shift solenoid, the transmission power relay and all the the wires and connectors connecting the power relay, the solenoid, and the PCM together. In this case the CIRCUITS must be diagnosed prior to replacing ANYTHING.
With all that said, is there now, or was there originally any other codes in the system besides one of these? If so, what are/were they? It is possible that there is a relay fault that is causing ALL of the shift solenoids to malfunction. It is also possible that there is low line pressure causing your no-shifting problem. Then there is the question: Are you absolutely certain that you replaced the correct solenoid?
I have also seen the shifting problems worsen due to misdiagnosis. Example: the power relay is causing the problem...the 3-4 shift solenoid gets changed...the transmission valve body is now full of air because the transmission was drained and the shift solenoid was removed from the valve body causing the valve body to drain...everything gets put back together and the transmission fluid is replaced....Now the transmission will not shift in any gear because the valve body cannot purge the air due to the solenoids being inoperative. They were inoperative in the first place and are still inoperative because the wrong part got replaced. PROPER diagnosis and repair will get everything working again.
I would recommend starting over to see what codes you now have and diagnose the system accordingly.
Sep 23, 2011 |
1999 Dodge Durango