95 grand cherokee transmission. replaced trans,same shift issues. then replaced trans control module,shifts much better but still has harsh/eratic shifts on occasion. sometimes it still holds the gears untill I lift slightly on the gas pedal then it shifts [ mostly 2nd to 3rd ]this is an I-6 automatic limited with the part time 4x4 transfer case
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6 posts now.
and why not read the long post answering all that.
that is limp home mode,
the trans in your car has a TCM (tranny brain computer) that
does all shifting for you.
and if its unhappy it goes to limphome.
like all computers, if the inputs are wrong so will be outputs (shift solenoids)
what you do is get the TCM scanned.
Transmission control module.
why not stick to 1 post and add to just one post. add facts
or ask specific questions to this.
and is 2 problems , (front axle is not related to trans if in 2wd)
Hi Eric, it sound to me like the modulator in the trans is faulty. This modulator is what controls the shifting in the trans.It details a 30 minmute repair by your transmission specialist. The replacement part should be around a hundred dls, plus the labor. While you are at it, have the filter changed in the trans for carefree shifting.
The TPS ( THOTTLE POSITION SENSOR) tells the engine computer and trans how far you are pushing the gas pedal. Its mounted on the side of the thottle body. It will make the engine surge if it is failing. Have replaced this part many times for this problem. TCM (TRANS CONTROL MODULE) control trans shifting. The tps is and one of the input sensor for shifting.
it could be a few different things? try un-plugging and plugging back in your wire connector to the transmission control module,or replace the tranny filter
Flashing the trans is reprogramming the Transmission control module. The TCM controls when the transmission shift according to road speed, throttle input and engine load.
I would check the transmission fluid level and color, should be a nice clear red color. You may need to have the filter replaced. Possibly some internal transmission problem also.
Likely you have a shift control module malfunction. Module is probably on the right side fender in the engine compartment. Check to see if you have one (some do and some dont... go figure...I've got a 91 & 95... I have about five different diagrams and NONE apply to my vehicles)
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