I have a 2000 Jeep Grand Cherokee with shifting problems. Vehicle shifts fine from 1st to 2nd, but jerks from 2nd to 3rd. It will only **** for about 4-5 times in stop and go traffic, and then stops as the car warms up. Only does this when it is cold. In hot weather (33+ Deg C) this problem disappears. Dealer has changed the pressure sensor and no change noticed. Is this a solenoid pack problem, or a worn out seal that is causing the cluth to hang? Pls help.
SOURCE: 01 jeep Grand Cherokee transmission problem
Reboot system by disconnecting negative terminal on Battery, with ignition Key on and engine not running, remove terminal for more than two minutes and connect it back, it will spark a little do not panic, and try it again
SOURCE: Transmission problem
I had a shifting problem. The car would start in the wrong gear and shift at wrong times. I repaced the governor postion sensor and tranny fluid and the problem has been fixed for several years. Did you replace the tranny fluid?
SOURCE: 2005 Jeep Grand Cherokee Shifting Problems
Check the Trans fluid level with it running and at operating temperature. Jeep NAG1 transmissions are known to have the input electric seal leak trans fluid. Not an exspensive fix add Mopar ATF4 and then relace the guild seal.
SOURCE: I have a Jeep Grand Cherokee 2001 with 88k on it .
as a quick remedy 1st check your fluid make sure is clean and leveled/adjust your kick down cable for early shifting by loosening the cable till you establish the right shifting
SOURCE: 1999 Jeep Grand Cherokee Laredo 4.0 liter six
P1762 - Governor Pressure Sensor Offset Improper Voltage
P1763 - Governor Pressure Sensor Voltage Too High
P1756 - Governor Pressure Not Equal To Target At 15-20 PSI
Your automatic transmission pressure governor has higher pressure than
it should. This could be caused by a sticking selenoid, or a dirty
filter. When is the last time you changed the ATF and filter? If it's been a
while, I'd go that route first. Otherwise, a transmission shop may have
to perform a series of air pressure tests on the transmission.
Chrysler manual says:
GOVERNOR PRESSURE SENSOR
The governor pressure sensor supplies the transmission pressure input to
the Powertrain Control Module on circuit T25. Circuit T25 connects to
cavity B29 of the PCM. Circuit K6 from cavity B31 of the PCM supplies 5
volts to the sensor. The PCM provides ground for the govenor pressure
sensor on circuit K4. Circuit K4 connects to cavity A4 of the PCM.
The governor pressure sensor is part of the transmission solenoid assembly.
GOVERNOR SOLENOID AND PRESSURE SENSOR
REMOVAL
Hoist and support vehicle on safety stands.
Remove transmission fluid pan and filter.
Disengage wire connectors from pressure sensor and solenoid
Remove screws holding pressure solenoid retainer to governor body.
Separate solenoid retainer from governor
Pull solenoid from governor body
Remove bolts holding governor body to valve body.
Separate governor body from valve body
Remove governor body gasket.
Remove retainer holding pressure sensor to governor body.
Pull pressure sensor from governor body
INSTALLATION
Before installing the pressure sensor and solenoid in the governor body,
replace O-ring seals, clean the gasket surfaces and replace gasket.
Lubricate O-ring on pressure sensor with transmission fluid.
Align pressure sensor to bore in governor body
Push pressure sensor into governor body.
Install retainer to hold pressure sensor to governor body.
Place gasket in position on back of governor body
Place governor body in position on valve body.
Install bolts to hold governor body to valve body.
Lubricate O-ring, on pressure solenoid, with transmission fluid.
Align pressure solenoid to bore in governor body
Push solenoid into governor body.
Place solenoid retainer in position on governor
Install screws to hold pressure solenoid retainer to governor body.
Engage wire connectors into pressure sensor and solenoid
Install transmission fluid pan and (new) filter.
Lower vehicle and road test to verify repair.
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