Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
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Need help with transmission

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Old 05-21-2022 | 04:58 PM
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xjtje90f30's Avatar
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From: NORTH CAROLINA
Year: 1990
Model: Cherokee (XJ)
Engine: RENIX 4.0
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Originally Posted by cruiser54
You could always unplug the TCU and see if anything changes. Try R and 1-2 and see if there's any improvement.
Line pressure can be checked with the proper tools/gauges.
so, i don’t know what the hell is up with this jeep now. So now after it warms up, it is super sluggish when I come off a stop. When it’s cold jeep runs fine, then when it warms up and I stop, coming off the stop it is SUPER sluggish then after 2kish rpm’s it will go. I checked my TPS which was at 4.73 for reference, and I adjusted output to 3.93 which is 83 percent. But when I had it at that, and I started the jeep it would rev up to 3k rpm and stay there. So adjusted output to 4.15 which gave good idle at 700. But now super sluggish when Warmed up. It’s a new TPS from advance replaced it like 1.5 months ago.

Is the sluggish off the stop, when warmed up is that solenoid or TPS? I’m kind of feeling to just buy new TPS, new solenoids, new tv cable. TCU fuse is good and TCU seemed fine.

any ideas? Also can you recommend what brand TPS to buy? Can’t find MOPAR brand… any recommendations for another brand? NTK/NGK good? NGK/NTK Throttle Position Sensor TH0168 (75451) https://smile.amazon.com/dp/B07F49LM7R/ref=cm_sw_r_cp_api_i_XG9XMJ8RBBHYTF4CBM0B

Last edited by xjtje90f30; 05-21-2022 at 05:01 PM.
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