Last post on Dec 06, 2013 at 12:29 PM
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Jeep Grand Cherokee, SUV
#655 of 1101 2006 JGC trans problems
Jul 14, 2010 (7:37 am)
Bought this 2006 Jeep Grand Cherokee Laredo with the 3.7L a few months back. During the test drive it ran smooth and shifted like a dream. It has 74K miles on it and recently started acting strange at the 1300 - 1500 rpm range. mostly with light throttle and starting up a slight grade. the tach is jumping up and down while the Jeep is surging or bucking. The dealer has looked at it twice. Re programed the computer and said it was torque shudder and just manually shift it at a higher rpm cause it shifts into overdrive too soon. Dealer also suggested a bottle of Lucas Tans fix. After adding the additive it has gotten worse. It now is making a growl or chatter noise when it's doing it's surging. I asked the dealer if a trans service would help and he said that it might be a good idea at this mileage. I see alot of other people having the same problems but what was the solutions? Or is there a solution? Thanks in advance for any advise you may have.
#656 of 1101 trans jerking
Jul 14, 2010 (10:48 am)
I read all about the Lucas trans fix and it is important to use the right one. I believe there are three types. Might be good to do a total flush that will get ALL the fluid out from the tranny and the torque convertor. The filter actually get pretty cleaned out in the process.
I have a 93 with a 6 and it does this trying to go into first gear but never fails if I manually put it into first. This makes me think it might be electrical but the solenoids can do this as well so I have been told.
#657 of 1101 Re: 2006 JGC trans problems [pacman8]
Jul 16, 2010 (12:11 pm)
I have a 97 JGC I bought in 2000 with 70K on it and I didn't have any transmission trouble until 170K this year. I serviced the trans myself 2-3 times only dropping the pan, but the filter got changed. I never did the flush. Dropping the pan is a PITA, but it's the only way to change the filter. I'd rather drain 50% of fluid and change the filter than drain 100% of the fluid. I see 100% fluid drain as a preventive measure more than a remedy.
If I really liked the car and had lost faith in repair shops, I would buy the 2006 shop manual and read the whole chapter on transmission. My manual has over 120 pages just on transmission. Read the troubleshooting sections. What can you check with the trans still in the vehicle? Cables? Wiring?
Maybe operation in 1 or 2 will help you learn more.
If the trans has its own computer, make sure the ground and power wires are OK. You need a good voltmeter.
It's a difficult situation. I believe its $500 in labor just to pull and re-install a transmission, but it seems way too soon to have to do a rebuild.
If you get it resolved, please update the thread for our benefit.
#658 of 1101 transmission
Jul 16, 2010 (1:07 pm)
I was told that a good flush of all the fluid with a power flush and cleaner is better since the filter is mainly a wire mess affair and not like an oil filter. This gets all the fluid out not just 50% or so.
I think I will get the manual for my 93 since I know how bad grounds and such can cause problems....Saturns have a problem when the ground or plus is corroded on the battery. It really screws up the whole running of the engine since it is all controlled by a computer, even the accelerator...not mechanical.
#659 of 1101 06 jgc trans dip stick
Jul 17, 2010 (11:48 pm)
Where can I get a trans dip stick for my 06 jgc?
#660 of 1101 Re: 06 jgc trans dip stick [yrrrdaddy1]
Jul 18, 2010 (7:49 am)
I'm sure the Jeep dealer has them. Not sure if they'll give you the run-a-round trying to order one though. I found one in a parts list downloaded from the web. Also found them on Ebay. I'm sure if you ask around you'll find more sources. Trying to "Google" them doesn't turn up much as they're sold primarily by vendors to garages. There's not much to them and expect to pay around 50 bucks or more. Here's one on Ebay (link title) although not necessarily for your GC. Also, get instructions on their use as the vehicle has to be within a certain temperature range when taking a reading.
#662 of 1101 Transmission over temp
Sep 02, 2009 (9:04 am)
I have a 2007 Laredo that I just bought in November of 2008. Twice in one month I came out to start my Jeep and it wouldn't start. It says "Transmission over temp". It won't turn over and jumping the battery doesn't help either. Does anyone know why this is happening. I took it to the Dealer and they can't find anything wrong with it. Help!
#663 of 1101 Re: Transmission over temp [jeepgirl6]
Sep 02, 2009 (9:27 am)
I took it to the Dealer...
So you were able to start it? My guess would be that the transmission fluid sensor is misbehaving.
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#664 of 1101 Re: Transmission over temp [tidester]
Sep 08, 2009 (6:37 am)
I have a 2007 loredo with the same problem!!! The thing that sucks is, it doesn't do it all the time, just once in a while. so you take it to the dealership and it starts right up so they don't see a problem. Last time they changed the ignition switch and that didn't work. I am going in for round 2 today. Any suggestions???