'98 transmission problems - JeepForum.com
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post #1 of 5 Old 08-16-2006, 12:09 PM Thread Starter
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'98 transmission problems

'98 GCLtd. 5.2 V8 - just got the evaporator core replaced and oil changed. Now, the transmission shifts at lower rpm and doesn't feel right when cruising on the highway - when I let go of the gas, the rpm drops down to about 1500 and it feels like something is holding the car back and keeping it from coasting (overdrive clutch maybe?). The steering wheel has also always shuddered at (and only at 55 mph - ???).

I thought maybe my transmission would act funny if they topped off my transmission fluid with the incorrect type, or they disconnected my battery to replace the evaporator core and reset the electronics that store information about the way I drive.

Any thoughts?

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post #2 of 5 Old 08-17-2006, 09:17 AM
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same thing on rpm drop

ive occasionally noticed the same drop on my 97 zj. mine feels like it was a manual transmission that you let off of the gas on. for the wobble, i had one at 47 and just had my tires balanced and that took care of it. try it if you bought your tires from some tires store, cause usually this is a freebie. let me know if you have any luck or find anything out about the rpm drop.
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post #3 of 5 Old 08-18-2006, 09:23 AM Thread Starter
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Yeah, I've been thinking more about it, and I am wondering if there's something wrong with the torque converter and the transmission isn't coming out of lockup properly, or maybe it's my throttle positioning sensor...good idea about the tire balance - makes sense if I only feel it at a specific speed - thanks.
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post #4 of 5 Old 08-18-2006, 10:24 AM
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How hard is it slowing you down. It should slow you down to a point, but not too much.

I would ask the shop what fluid they used. If they used Dextron, kick them in the jimmy. Have them flush it out and fill with ATF +3 or better yet, +4.

1985 1 ton K-5, Detroit diesel, 36" tires (going bigger when money permits), 4-speed manual swap, Rockwell T-case, Hybrid lift, 12.5K winch.
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post #5 of 5 Old 08-24-2006, 08:11 PM
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hey woody...i just changed my tranny fluid and filter and it has fixed the hard shift and drop in rpm for the most part ...still happens if you drive like you have a feather for a gas pedal like i do on the highway...but i refilled w/+4 and it is working like a charm
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