Last post on Dec 06, 2013 at 12:29 PM
You are in the Jeep Cherokee and Jeep Grand Cherokee
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Jeep Grand Cherokee, SUV
#436 of 1101 Re: 2005 Grand Cherokee shifts to neutral while driving [kalanibobb]
Nov 04, 2009 (6:08 pm)
This could be alot of possiblities, but start simple. Check the Tranny fluid, because if it's like it's going into neutral then it might be slipping out of gear. Low fluild on new vehicles causes wierd things. If it's low on fluid don't drive it until you add fluid. Some cars need to be running and hot to check proper fluid in the Tranny, but i would check not running to see if any is there first.
Also have scanner hooked up to see the codes, or like on my 95 jeep you switch the key on an off three times leaving the key on at last turn(not starting), then wait for the check engine light to flash. The light will flash codes like one flash, pause, two flashes, pause would equal 12. This will tell you what to look for. This might not work for all vehicle. Good luck!
#437 of 1101 Re: 2001 3.1 td trany shift problem [remjeep]
Nov 05, 2009 (4:49 pm)
Hi , i have a 2001 GC with 150K miles on it , has the same problem with your transmission , did you know what was the problem with yours !! its at the shop and the mechanic have no clue !!
#438 of 1101 Re: 2001 3.1 td trany shift problem [remjeep]
Nov 05, 2009 (5:09 pm)
My 95 jeep is doing the same thing. A few weeks ago I decided to fix my engine leak at the head gasket, so I took the Intake and head off and replaced It the leaks still there and when I test drove it the tranny did the same thing. I think a sensor I touch during the head job caused it but I don't know. If you look at some of my post i've got some good resposes maybe it will help you out.
What engine work did you do because there's alot of things that factor into the tranny. let me know what you find, if find somthing i'll let you know good luck!
#439 of 1101 Re: Transmission Shifting Problems [nneal]
Nov 05, 2009 (5:28 pm)
I wiggled the harness at the intake all around where the TPS and MAP sensors are. Now there's a code for the TPS voltage. I'm going to rip back the tape and trace some wires maybe i'll be lucky. My brother the machanic told me to try driving it with out the kickdown cable and it shifts like it's been but alittle worse so we know the cable is working. I'm going to cleat the codes after I look at the troubleshooter in the scanner, which my brother will do may i'll find something.
I read an article you posted the 42RE about a default mode on the TCM, which is 3rd but manual shifting is possible, and that modes from a fault code, what does this mean, there a way to reset this TCM? Thank you!
#440 of 1101 Re: 2005 Grand Cherokee shifts to neutral while driving [kalanibobb]
Nov 05, 2009 (8:02 pm)
seems dalmer/chrystler's decesion to farm out their soldering to third world countries did exactly what they needed it to do..last ten years,then-good luck !
--after re-soldering mt headlight switch,my headlights don't blink on and off like the alarm has tripped..it works fine now..
--my best advice is to get a tube of DIELECTRIC GREASE-available from electrical supply places,then anytime you unplug ANYTHING-give the connection a good coat of that non-conductive grease..at least it will slow the contact corosion problem these trucks seem to be plauged with--even when you change a bulb !
people--PLEASW CHECK YOUR TAILIGHTS AND BRAKE LIGHTS!..this annoys the hell outta me when people don't seem to care if their lights work ! the simplest way is to see your reflection in a store window !..might keep someone from hitting you!
to keep the break pedal down to check brake lights-i use a hammer weged between the pedal and the front of the seat !but don't leave them on too long,as they get hot !..makes changing them harder..
#441 of 1101 2001 grand cherokee transmission shifting problem!!
Nov 05, 2009 (8:05 pm)
Hi , I need help !! my 2001 jeep has 150K on it , and when i take off the car is so heavy like putting a lot of effort ( i assume the transmission starts from the 2nd)
and it will not shift to 3rd or 4th unless i start driving with the shift is on 2 and when i aproch a highway i shift it to D and OD then it runs smoothly , it used to do that once in a while but now it does it everyday , took it to the mechanic he said rebuilt or change the transmission which i will not do and prefer to sell the car instead if couldnt fix the problem , so please Help !!
#442 of 1101 Re: Transmission Shifting Problems [xelvis66x]
Nov 06, 2009 (4:15 am)
If you wiggled the harness and got a trouble code when there was none, it seems like there's a bad connection (or wire). Be careful as I have, of tripping a code by unplugging a sensor or something else.
The 42RE article about the default mode means if the TCM has a trouble code set, then it places the transmission in default mode as you described. On my 98 Cherokee, when I erase trouble codes with the scanner, it erases trouble codes in everything (engine computer and TCM). On my Jeep, I can only read the engine computer trouble codes, and not the TCM. I'm told I need a DRBII scanner to read those which the dealer has and is very expensive. I was surprised by some Jeeps with the 42RE, having the capability to read trouble codes of the TCM separate of the engine computer. I don't know if yours has an overdrive switch, but this is what the article described:
"This system has self-diagnostics. Fault codes can be read with a scan tool or by cycling the ignition key three times, then counting the flashes of the LED in the OD off switch."
Good luck and keep us posted on what you find.
#443 of 1101 Re: Transmission Shifting Problems [nneal]
Nov 06, 2009 (1:46 pm)
Yes I think a wire is bad I haven't checked yet.
My Jeep is a 95, with the OD off switch, which is before the OBD-II scanner connector, mines the OBD-I connector, there is one in the engine bay at the computer which we looked at and some codes were on that we caused, and then I found a plug inside for my TMC. The scanner we have reads the TMC and the computer, from that we got alot of readings, but I had no codes when I had the scanner in. Now with the flashes you said about I checked because I didn't have the scanner and I have TPS codes in both computers, this is after I wiggled the wiring harness a few days ago.
How do you know if it's in default mode, from the articles my symtoms would say but i'm not sure. I guess the scanner will reset this.
#444 of 1101 Re: Transmission Shifting Problems [xelvis66x]
Nov 06, 2009 (5:18 pm)
The way I translate the article (link title), default mode is when you place the transmission in "drive", it automatically goes to third gear. You can make it go to reverse or second gear by manually putting it in that gear yourself. Seems like you have a choice of three gears while in default mode. To me it doesn't sound like you're in default mode because you have all your gears, they're just not shifting right.
#445 of 1101 Re: 2001 grand cherokee transmission shifting problem!! [amab]
Nov 06, 2009 (5:44 pm)
My 98 Cherokee with an AW4 transmission had the same symptoms. Not sure what your transmission is. I brought mine to a transmission repair shop for a free first time estimate, and all he could tell me he was the fluid was a little dirty and he didn't know what was wrong. According to him, my only option was a total rebuild. Then I thought, what the heck, I'll bring it to the Jeep dealer, with all their tools they will know what's making it act up. I got the same answer from them, only this time I was a $100 poorer.
I knew the "guts" of the transmission was alright, because like yours, once I got it to drive it ran normally. Only when I came to a stop, it would not shift down to first unless I manually put it there (in order to take off again). So with nothing to loose, I bought a solenoid kit consisting of three solenoids off the web and installed them. To my surprise that's what my problem was.
If this is what you decide to do, look around at some of the transmission parts sites on the web for solenoids. The Jeep dealer wants an outrageous price for theirs. I got all three solenoids (the kit) off the web for LESS than the price of one from the Jeep dealer.