post #1 of Old 11-13-2010, 10:42 AM Thread Starter
mbg-jeep
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1996 Jeep Grand Cherokee Limited Transmission Problem

My daughters Jeep won't shift out of 1st gear. I took it for a test and it doesn't shift out of first but I did find if I let off the gas and press it again the trans totally slips - like it's in neutral. (fluid level is fine but was a little low when she turned it over to dad - maybe 3/4 of a quart low. But I did the test after adding the fluid)

Any ideas?

Thanks

More info - if I let the engine RPM get to 3000 then let of the gas and then back on the gas there is no power (trans slips). If the car coasts down to about 20MPH it re-engages to low.

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post #2 of Old 11-13-2010, 11:31 AM
tjwalker
It's the crank sensor!
 
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Your throttle position sensor is directly involved in shifting characteristics of the transmission. I would start by testing that.

As these forums are "platform specific", you should post this thread in the GRAND Cherokee forum. This is the CHEROKEE (XJ) forum.

99 Cherokee, 4.0 AW4, NP242
Past Jeeps: 49 Willys, 81 Scrambler, 88 Comanche
Without "data", all you have is an opinion!
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post #3 of Old 11-13-2010, 12:18 PM Thread Starter
mbg-jeep
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Quote:
Originally Posted by tjwalker View Post
Your throttle position sensor is directly involved in shifting characteristics of the transmission. I would start by testing that.

As these forums are "platform specific", you should post this thread in the GRAND Cherokee forum. This is the CHEROKEE (XJ) forum.
I should have mentioned - I checked the TPS and it was around 4 volts at WOT and .2 closed.

Mike
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post #4 of Old 11-14-2010, 09:36 AM Thread Starter
mbg-jeep
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Ok - I checked the error codes and found the following:

P0740 - TCC Circuit Malfunction
P1756 - Gov press not equal to target @ not 15-20psi

I look for these on the web and see many suggest it's the gov press sensor & gov solenoid valve. These are around $300 so want to make sure it's worth a shot???

Mike
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post #5 of Old 11-14-2010, 10:48 AM
cactus_jack
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Quote:
Originally Posted by mbg-jeep View Post
Ok - I checked the error codes and found the following:

P0740 - TCC Circuit Malfunction
P1756 - Gov press not equal to target @ not 15-20psi

I look for these on the web and see many suggest it's the gov press sensor & gov solenoid valve. These are around $300 so want to make sure it's worth a shot???

Mike
NAPA Part Numbers:
Governor Pressure Sensor: ATP 16832 Approx. $96.48

I couldn't find a listing on the valve. But I would try the sensor first before anything. Honestly, you could probably just return it if it didnt fix the problem. Just make sure its nice and clean, lol. Good luck.

oh, and it might help if you post in the correct forum

CACTUS_JACK
98 XJ Sport Budget Build
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post #6 of Old 04-06-2013, 05:19 PM
Thatrussokid
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Old post but I'm going threw this problem right now. But I switched the gov sensor an solenoid. But still no luck tps fine think one of the bands in the tranny snapped so looks like I'm swapping one
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post #7 of Old 03-04-2014, 01:55 AM
firemanjoe6982
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96 jeep Cherokee 4x4 will manually shift through the gears just fine. Take off in drive/overdrive the rpms will jump up and shift back down. Give it a little more gas and it will shift back into overdrive and the rpms comes back down. It does it all the time and drives me **** crazy. I have already replace the tps and it is a different transmission with the same problem as the original. Any suggestions?
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post #8 of Old 03-04-2014, 04:54 AM
ZeeJay1997
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adjust throttle valve cable. Google in the search upper left corner
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