Trans wont shift out of 3rd...
#1
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Location: Reno, Nevada
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Year: 1997
Model: Cherokee
Engine: 4.0
Trans wont shift out of 3rd...
i got a 97 xj and driving it yesterday from a stop i noticed it would start in 3rd and stay in not shift down... if i manual shift it will work fine... 1st and 2nd gear are still there just not shifting down from a stop... oh and the check engine light came on... i tried to run the codes and i have no power to the port... so instead i unplugged the battery overnight... went to work this morning and it was fine until i got to work (12 miles) then it started again... any idea's guys? thanks for any help!!!
#2
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Year: 1991
Model: Cherokee
Engine: 4.o
Hi there, you should check your fuses and try to determine why your diagnostic port doesn't work. you could have a wiring problem (losing a power supply to the tcu) get your codes and go from there. Hi mileage on your jeep? trans fluid in good shape?
TRANSMISSION CONTROL MODULECAVCIRCUITFUNCTION1--2--3--4T14 20LG/WTOUTPUT SHAFT SPEED SIGNAL5--6D2B 20WT/BKCCD BUS (-)7D1B 20VT/BRCCD BUS (+)8--9T3 18VTRANGE SENSOR D310--11T22 20DB/WTTRANS SOLENOID (LOCK UP)12T19 20WTTRANS SOLENOID A13T60 20OR/WTTRANS SOLENOID B14D21C 20PKDATA LINK TRANSMIT15--16K167E 20BR/YLSENSOR RETURN17K22 20OR/DBTPS TO TCU18L10A 18BRLGBACKUP LAMPS19--20--21T42 18VT/WTRANGE SENSOR L22T1 18LG/BKRANGE SENSOR D23K29A 20WT/PKSTOP SWITCH-NORMALLY CLOSED24Z12A 18BK/TNGROUND25M1D 20PKUNDERHOOD LAMP & IGNITION OFF DRAW26F12A 18DB/WTIGNITION (RUN/START)
TRANSMISSION CONTROL MODULECAVCIRCUITFUNCTION1--2--3--4T14 20LG/WTOUTPUT SHAFT SPEED SIGNAL5--6D2B 20WT/BKCCD BUS (-)7D1B 20VT/BRCCD BUS (+)8--9T3 18VTRANGE SENSOR D310--11T22 20DB/WTTRANS SOLENOID (LOCK UP)12T19 20WTTRANS SOLENOID A13T60 20OR/WTTRANS SOLENOID B14D21C 20PKDATA LINK TRANSMIT15--16K167E 20BR/YLSENSOR RETURN17K22 20OR/DBTPS TO TCU18L10A 18BRLGBACKUP LAMPS19--20--21T42 18VT/WTRANGE SENSOR L22T1 18LG/BKRANGE SENSOR D23K29A 20WT/PKSTOP SWITCH-NORMALLY CLOSED24Z12A 18BK/TNGROUND25M1D 20PKUNDERHOOD LAMP & IGNITION OFF DRAW26F12A 18DB/WTIGNITION (RUN/START)
Last edited by captainwoot; 09-05-2009 at 08:46 PM.
#3
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Year: 1998
Model: Cherokee
Engine: 4.0
TCU,TPS,Wiring or Shift solenoids will cause this...i just posted a write up how to check all of this from the TCU plug in another thread last week. It sounds to me you have some faulty solenoids.
#4
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Year: 1997
Model: Cherokee
Engine: 4.0
i replaced the tps yesterday night and same thing... when it start to not shift i shut the jeep off and start it and its fine for a few... it has 193,000 miles and the trans fluid is brand new(i work at a shop)... im on my phone so its hard to search... can you get me a link to the write up? thanks for the help guys...
#5
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Year: 1996
Model: Cherokee
Engine: 4.0L
This thread of mine might help you ALOT:
https://www.cherokeeforum.com/showth...e+revving+fine
good luck
https://www.cherokeeforum.com/showth...e+revving+fine
good luck
#7
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Year: 1990XJ/1989MJ
Model: Comanche
Engine: 4.0L Renix
Double check the TPS plug that goes to the TCU. If it is loose or making poor contact it will have those symptoms.
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