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Jeep Grand Cherokee, SUV
#481 of 1101 2007 Transmission problem
Nov 18, 2009 (3:48 pm)
I have a 2007 grand Cherokee V8 2 x 4. I am having an issue with the transmission, after the car has sat for a long time overnight and I started to place it in reverse the transmission slips and it takes a while for it to synchronize. I had service today at a authorized Jeep dealer and he said they could find nothing in that all I'd need to do is sat and let it warm up a minute before a court in reverse. Doesn't sound right to me sounds like there has to be some problem either with a pressure valve or draining the fluid within the transmission that is causing this slippage when the vehicle is cold once it has been driven it does not react this way until it sits all afternoon are overnight. you may have on what might be causing this as the Jeep dealer said they could find nothing wrong.
#482 of 1101 Re: 2007 Transmission problem [cecarter3]
Nov 18, 2009 (6:39 pm)
on my jeep i start the engine then hook my seat belt then put it in gear when cold took care of my isue now have 212000 miles with no trans problums
#483 of 1101 Re: 2007 Transmission problem [cecarter3]
Nov 19, 2009 (4:30 am)
What model is your transmission? Is your "check engine" light on...do you have any trouble codes?
#484 of 1101 Re: 2007 Transmission problem [cecarter3]
Nov 19, 2009 (5:19 am)
-sounds like a common problem with a lot of auto transmissions-not just jeeps,,
--when i sold used cars,they called it "morning sickness",as it usually only happened when you'r trying to go ta work..more often than not,the trans filter is starting to plug up..when the fluid's cold-it's thicker,and harder to pass through a gummed up filter..
--my sugestion?have it "power-flushed"whitch changes ALL th fluid-even what's in th torque converter(that doesn't happen when you pull the pan,and change th filter)..
--backflushing also cleans th filter..for the 125 my local aamco quoted me,with syntetic-didn't sound TOO bad..ya change the oil regular,but expect trans fluid to last as long as th car?..kinda goes for th rest of th lubricants -down to th axle grease..
--when owning a car,you can make payments,or make repairs,but usually when the payments stop they "planned obsolesence" parts like duel pumps,water pumps,etc-in a attempt to get you-the consumer-out from under th hood-and into th showroom..
--while taking my just recently aquired-98 laredowith a noisy rear axle,had a salesman tell me"you need a new jeep",and got kinda pissy when i came back with -"i don't need a new jeep-as bad as you need to sell one !"
just another way to milk every nickel they can outta you..,and those salesmen will never know the satisfaction of making a broken thing work again-just because of YOUR talents..i get a lot of satisfaction from that..i can't always fix it all,but i still have some talents..
#485 of 1101 Re: 2007 Transmission problem [loosenut]
by Stever@Edmunds HOST
Nov 19, 2009 (8:26 am)
I've been scared off from power flushing; seems to be too many failures associated with power flushing (especially from external machines).
Hard to say whether the tranny was going to give up the ghost anyway, but why stir up all the gunk? I don't even trust the flush where you let your engine do the pumping. Please let us know how it goes, Cecarter3, if you go this route.
amigo_john, "Isuzu Trooper" #8070, 30 Jun 2003 6:46 am
#486 of 1101 2007 Jeep GCL Transmission Issues
Nov 19, 2009 (2:07 pm)
I have read of this problem in other posts but did not see any threads with the answer, I am hoping someone knows what the malfunction and fix maybe. I bought my wife a 2007 Jeep Grand Cherokee Laredo 4x4 in 11/08, the vehicle had 27,000 mile on it and was still under warranty, now prior to going out of warranty about 8 months later she was driving her vehicle to work when she said the "Check Engine" symbol lit up plus some other dash symbols the engine was still running but she was getting no power to the transmission she pulled the vehicle to the side of the road, shut the engine off waited a few seconds - started the engine and everything was back to normal. When she came home that night and told me of the incident I checked the vehicle out and also took it to the local Dodge Boys to have them run a diagnostic - according to the shop there were no problems. Now the vehicle is out of warranty and this same issue has happened to my wife several times and I could not get the vehicle to repeat this issue nor could the local Dodge Boys. I had read some posts that there could be programming issues with the TCM or PCM and to disconnect the battery for 5 minutes and let the system reboot - I did this and had no issues for about another 6 months - in the past month this has happened to my wife twice and the other day it finally happened to me - luckily I was less than 100 feet away from Auto Zone and was able to have them run a diagnostic which came up as U0404 and said something about bad data from the transmission. If anyone can be of assistance please let me know unfortunately like a lot of Americans I find myself economically in a bad situation and cannot afford to trade this vehicle in.
#487 of 1101 Re: 2007 Transmission problem [nneal]
Nov 19, 2009 (6:19 pm)
I have had some problems with the check engine light. Thanks I will check that out.
#488 of 1101 Re: 2007 Jeep GCL Transmission Issues [bigdog66]
Nov 19, 2009 (8:17 pm)
That could be a sensor on the tranny that's not giving the right signal, or like you said about the TCM it might not be reading the data right.
You should see if you can have a mechanic hook a snap-on scanner to it, like my brother's, because it does a troubleshooter on that code and give you some ideas on where to start. You could also check the sensors connections if they are corroded or damaged, but I would look into the troubleshooter first it helps alot.
#489 of 1101 Re: 2007 Transmission problem [cecarter3]
Nov 20, 2009 (7:51 am)
I have serviced my own trans fluid several times. I concur with cecarter3. He's right. You need to do a flush if you want to completely swap out the fluid.
Ask if there's suppose to be a magnet in the bottom of the pan and if not, is it OK to add one. It collects any small metal particles that are created. I've seen magnets with a lot of grit on them.
If you have to prioritze your budget, get the trans filter swapped out first.
The dealer will be your most expensive choice, but they will actually do the work. Anybody else, ask for the old filter and when you go home, verify it came from your car.
If that doesn't fix your problem, I suspect that the transmission and engine are not interacting properly when the engine is cold.
#490 of 1101 2001 Grand Cherokee Trans Code 0740
Nov 21, 2009 (6:31 pm)
I have a 2001 Jeep Grand Cherokee 4.0L, 2x4. The transmission has been slipping. The code came up 0740 pointing to the torque converter. I replaced the Pressure transducer, Pressure solenoid in the governor, fluid, new filter and I drove it for a few days. The slipping seemed to be gone. Then the transmission icon on the dash came on. This was the first time it came on, with the prior slipping it did not. The same code 0740 came up again (AutoZone).
I drove the vehicle on the freeway for about 35 minutes. At my next stop, I had no reverse and there was smoke coming out of the transmission stick tube. Since that time I have continued to drive it to work about 10 minutes away. I never go over 35 mph. I hear this rubbing, whining sound about seven minutes into the drive.
Now here’s the kicker. Yesterday, reverse started working again. if the torque is damaged, should reverse gear be going in and out? and if it is NOT damaged, what sensors or valves or electrical parts need to be replaced? Or is it now time to drop the dreaded transmission? Sorry for so much detail. Thank you in advance.