auto transmission
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From: somewhere in northwestern ohio....Mansfield, Oh
auto transmission
Driving my truck tonight the auto transmission started to refuse to start out in first unless I do it manually . I checked codes and there are none . From a stop it feels like it is in limp mode starting out in second and after you get moving a little it shifts fine the rest of the way up . I can pull it down into first and it goes in and feels fine . Thanks for any replays and help on this , oil looks good also .
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From: somewhere in northwestern ohio....Mansfield, Oh
Sounds like it has happened to you more then once . Has it been under warranty our can you tell me about how much for dealer to fix ? Did your truck do the same as mine , starting out in second ?
Driving my truck tonight the auto transmission started to refuse to start out in first unless I do it manually . I checked codes and there are none . From a stop it feels like it is in limp mode starting out in second and after you get moving a little it shifts fine the rest of the way up . I can pull it down into first and it goes in and feels fine . Thanks for any replays and help on this , oil looks good also .
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Mine did the exact same thing yours is doing, would only start out in second and be real sluggish especially with a load on. Dealer replaced under warranty so not sure on the price. If you buy the transducer through the dealer thay can give you a scamatic on replacing.
no, but they work together. Its pretty easy. Drop the pan and filter, replace transducer and reinstall filter and pan, refill fluid. i had to do mine and i went ahead and changed the governor solenoid as well. Might consider this if you have the little bit extra $$, and probably a trans service while its open anyway.
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From: somewhere in northwestern ohio....Mansfield, Oh
This is what the manual says and it seems to be right on the money for what my truck is doing . Hopefully someone will chime in as to how hard of a fix it is .
Transmission control is achieved through regulation
of governor pressure using a Governor Pressure
Solenoid valve. Valve position is controlled by
pulse width modulation. Torque converter clutch
and overdrive solenoids are also controlled by the
ECM, as are the transmission relay and dashboard
overdrive off lamp. ECM inputs affecting transmission
operation include the throttle position sensor,
output shaft speed sensor, vehicle speed, engine
speed sensor (CKP), brake switch, ignition, overdrive
on/off switch, torque converter clutch solenoid,
transmission temperature sensor, and governor
pressure sensor.
The ECM continuously checks for internal transmission
problems, electrical problems, and some
hydraulic problems. When a problem is sensed, the
ECM stores a diagnostic trouble code. Any of these
codes cause the transmission to go into ‘‘default’’
mode. When the ECM detects a problem, the transmission
will default to third gear. When this happens,
the only transmission functions are:
² PARK and NEUTRAL
² REVERSE
² THIRD GEAR
² MANUAL SHIFTING of FIRST, SECOND and
THIRD GEAR
No upshifts or downshifts are allowed. The position
of the manual valve alone allows the ranges
that are available. Although engine performance is
seriously degraded while in this mode, it allows the
owner to drive the vehicle in for service. The transmission
can be shifted manually by quickly downshifting
into 1st to achieve 1st gear, then shifting to
2nd, then to third. However, default mode will not
allow 4th gear or any EMCC operation.
Once the DRBIIIt is in the transmission portion
of the diagnostic program, it constantly monitors
the ECM, updating the screens with switch, sensor,
and input/output states, as well as displaying diagnostic
trouble codes and default status.
Transmission control is achieved through regulation
of governor pressure using a Governor Pressure
Solenoid valve. Valve position is controlled by
pulse width modulation. Torque converter clutch
and overdrive solenoids are also controlled by the
ECM, as are the transmission relay and dashboard
overdrive off lamp. ECM inputs affecting transmission
operation include the throttle position sensor,
output shaft speed sensor, vehicle speed, engine
speed sensor (CKP), brake switch, ignition, overdrive
on/off switch, torque converter clutch solenoid,
transmission temperature sensor, and governor
pressure sensor.
The ECM continuously checks for internal transmission
problems, electrical problems, and some
hydraulic problems. When a problem is sensed, the
ECM stores a diagnostic trouble code. Any of these
codes cause the transmission to go into ‘‘default’’
mode. When the ECM detects a problem, the transmission
will default to third gear. When this happens,
the only transmission functions are:
² PARK and NEUTRAL
² REVERSE
² THIRD GEAR
² MANUAL SHIFTING of FIRST, SECOND and
THIRD GEAR
No upshifts or downshifts are allowed. The position
of the manual valve alone allows the ranges
that are available. Although engine performance is
seriously degraded while in this mode, it allows the
owner to drive the vehicle in for service. The transmission
can be shifted manually by quickly downshifting
into 1st to achieve 1st gear, then shifting to
2nd, then to third. However, default mode will not
allow 4th gear or any EMCC operation.
Once the DRBIIIt is in the transmission portion
of the diagnostic program, it constantly monitors
the ECM, updating the screens with switch, sensor,
and input/output states, as well as displaying diagnostic
trouble codes and default status.
I found the right spot by Trial and Error. On the Driver's Side of the Engine Compartment, there is a black plastic box that has a couple plastic screws that you want to remove. Inside of the Plastic Box there will be a Cable with a white clip. Remove the white clip, and try tightening the cable so it has less slack and replace the Clip. By tightening the TV Cable it will cause later shifts and raise Line Pressure.
Thread Starter
Registered User
Joined: Sep 2004
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From: somewhere in northwestern ohio....Mansfield, Oh
no, but they work together. Its pretty easy. Drop the pan and filter, replace transducer and reinstall filter and pan, refill fluid. i had to do mine and i went ahead and changed the governor solenoid as well. Might consider this if you have the little bit extra $$, and probably a trans service while its open anyway.
Thread Starter
Registered User
Joined: Sep 2004
Posts: 1,039
Likes: 0
From: somewhere in northwestern ohio....Mansfield, Oh
Thank for all the help people , I guess it is time to tear into it . Hopefully well sitting in the garage last night it fixed its self , ya right . 3000 miles out of warranty hope this is not the sign of things to come . I still am a little curious of the after market Governor Pressure Solenoid valve from http://www.transmissioncenter.net/dodge.htm has anyone used it ? I also can't find much on a heavier duty transducer , is there such a thing ?


