Question about 1998 Jeep Cherokee
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Posted on Jan 02, 2017
sounds like either a bad speed sensor or controller. shift points are too high, should be at 2000 or slightly less. if fluid is good and clean and shifts do not flair, check those control units. Not sure about calibrate...could mean out of calibration...Id ask
another tech about that. (i don't know everything!)
Posted on Mar 12, 2009
SOURCE: 93 jeep AW-4 transmission won't
Why you change solenoids? Some first problem there? I suggest read this article: Jeep AW4 Diagnosis
Sound like a Torque Converter problem, but in additiona I post here some of the most common problems:
* Incorrect transmission fluid (cost: $50-60) - most common problem! (even in 2010)
* Computer needs retraining (try this as soon as you've changed the fluid)
* Solenoid pack (cost: about $60-$160 plus labor. Might be clogged and fixable.)
* Ground strap broken/missing - may be misdiagnosed as needing a new transmission and/or computer.
* Clogged hydraulic "brain" ($0 to $150)
* Bad input sensor (common) - "Can be seen on scan tool screen as input rpm -if it's 0, replace the sensor."
* Computer firmware needs upgrade (Chrysler dealer should do this for free but might run up to $200)
* Incorrect filter used in last fluid change
* Loose electrical connection
* Torque converter (see the bump shift section)
* Gear selector issues
Keep us updated.
Posted on Jun 16, 2011
SOURCE: 93 jeep grand Cherokee with
Are your try cleaning the NSS (Neutral Safety Switch). Your fluid levesl are OK? Keep in mind that when the transmission overheats, the TCM shutsdown the OVERDRIVE to reduce the heat in the transmission. First thing I would do... is check the tranny fluid level. Then, maybe have the fluid and filter changed along with a flushing.
Is it never going into overdrive, or is it slipping out of overdrive? If it never goes, then it might be as suggested above. Whereas if it slips out of overdrive... could be another transmission solenoid (rare) or some adjust request. Sounds like the TCM or the Temperature Sensor is failed (included Thermostat).
Additionally, I quote other interesting commets:
After trying everything I could think of, I noticed that when the automatic locks failed to engage (at around 15mph) that's when the transmission would not shift into OD. So, now when the locks don't lock and the transmission doesn't shift to OD, I put the transmission in neutral and turn off the ignition and let it coast to a slow speed (see above caution). When I start the engine again and put the transmission back into drive, the locks engage and so does the OD. Works for me. I'm currently doing research on what causes the locks to engage automatically. I'm thinking it will be a vacum or a switch.
Hope this helps. Keep us updated.
Posted on Jun 17, 2011
SOURCE: Have a '93 Jeep Grand
If the transmission will not go into gear or has trouble finding gears
and has the proper amount of fluid, the shifting linkage could be bent
or misaligned, especially on automatic models. The linkage can be found
on the driver side of the transmission, toward the top of the unit.
Inspect it to make sure the components aren't bent or broken and have
someone shift the Grand Cherokee while you watch from underneath. Most times,
only minor adjustments are necessary.
Also, check Torque Converter and scanned the TCM (Trans Control Module) to know if some fault code is stored there.
Posted on Jul 21, 2011
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