Question about 1995 Jeep Grand Cherokee

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95 grand cherokee 4.0 4wd w/ auto trans. starts in 3rd gear, manually shifting to 1st only gives 2nd gear, won't shift down on own, won't go to OD & OD selector button does nothing, no light, no shift, no OD, won't go to 1st manually or on own...used key ignition to pull codes 12(out-put speed sensor) and 25(EEPROM checksum)..dealer guys claim it needs major rebuild and torque convert. very skeptical of their opinion as they claim their diagnosis pulled NO codes, they also broke my antenna in their carwash(unrelated but doesn't help my confidence) we love our GC and would like to keep her..where do I start? any advise?

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Replace the speedsensor. Start there.

Posted on Dec 25, 2009

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It sounds like it is in limp in mode. try disconnecting the battery for ten minutes and reconnecting. this will reset the pcm and clear the fault codes. if it was just some sort of fluke if should be ok, if there is a problem it will return to limp in mode. if it wasn't acting up beforehand, it's more than likely an electrical, or computer problem, not a mechanical issue,

Posted on May 28, 2009

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