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SUVs Jeep Cherokee and Jeep Grand Cherokee Jeep Grand Cherokee Transmission Problems
501 messages, Last post on Dec 04, 2009 at 9:34 AM
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Replying to: hunterbaye (Oct 26, 2009 3:59 am) |
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I have a 99JGCL and lately while I'm driving it seems that the transmission uncouples for a quick second then re-engages making my car jolt. Sometimes it does this 2 or 3 times in a row. The engine is still running and nothing seems to be nothing wrong with it. It is like I'm switching from D to N and then back in D really quick. Today is did it really bad, about 3 times successively and more pronounced then before and during one of the jolts the "Check Engine" light came on. I made it home without any other problems, shut the engine off but when I restarted it a minute later the "Check Engine" light was still on. I cannot correlate this to temperature, distance, time of travel, or anything else, it's never consistent. I don't need to drive the car for another day so if anyone has any suggestions in the mean time please let me know. Most of my driving is on highway and this is worrisome. Another thing, (I've had this problem for some time) from time to time it seems there is a lag in the gears shifting. For example I'm coming to a full stop and anywhere from 1 to 3 seconds after I'm at a full stop the transmission shifts into the low gear. No problems shifting while accelerating or slowing down, this happens only when I come to a stop, i.e. red light. Are these 2 problems related?
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Replying to: 99jgcl3 (Oct 27, 2009 7:52 pm) --check some of the previous posts about tranz troubles.. --seems the connector that controls the shifting-cause it's all eletronic-to shift from drive to park.. --aparently, one cure is -find the eletrical plug that goes to th trans..unplog it,and look at the contacts..-break out out your trusty swiss army knife-scrape the contacts clean, put a glob of dielectric grease in there-to keep them from corroding yor contacts again--put it back together again,and give it a shot? -- 
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Replying to: 99jgcl3 (Oct 27, 2009 7:52 pm) The transmission interacts with the engine (controls, sensors, etc.). Look for problems here. Their repair cost is low compared to transmission repair. Check the fluid level HOT. Low fluid can cause all kinds of symptoms. I made this mistake once. Good Luck
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Replying to: rwengr (Oct 28, 2009 6:53 am) |
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A while ago (don't remember where), I came across this note on Throttle Position Sensor symptoms and saved it: "A faulty TPS can cause driveability problems such as hesitation, stalling, an erratic idle, pinging (spark knock), no torque converter lockup, hard starting, an intermittent check engine light while driving, poor fuel economy, and generally poor engine performance." I would also add "random transmission slipping" and weird shifting patterns as well. |
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I have a 95 GrandCherokee AWD with the 4.0 about 178,000 miles. I recently replaced the headgasket because it was leaking oil. That didn't work but after I got it back together and test drove it the tranny wouldn't shift properly. When i push the gas starting out it got to about 3000rpm then skipped over 2nd and went to 3rd for a little and into overdrive. The trannys strong it just don't shift properly. when I get it up to speed and need more power, and push the gas it shifts from OD to 3rd but no other gears like before i worked on it. I checked the Throttle Valve cable, I took a TPS(throttle position senser) off my brothers jeep and that didn't fix it. I also checked the Tranny fluild and its full and was just changed Jan 09 when my brother had it (He's a mechanic and it got him stumped). Those are the only things i did when i worked on it that are Tranny related. I also had him hook up our scanner and no codes and we tried to reset the computer but nothing. Now I'm stuck i would appreciate any suggustions. Thank You!
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Replying to: xelvis66x (Oct 31, 2009 10:14 am)
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Replying to: xelvis66x (Oct 31, 2009 10:14 am)
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Replying to: tuggajb (Oct 31, 2009 12:52 pm) |
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