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
#543 of 1101 Re: 96 jeep grand cherokee laredo -700.00 HELP ME [rwengr]
Jan 11, 2010 (12:33 pm)
Thank you. I just found out i have to get the transmission fix. so much for $700.00 its going to cost me more! How much more I have no ideal. My question is do i fix it or get rid of my jeep? Either way I have no money for a used car or to fix this. I love my jeep had no other problem till this, then again I could by a car and still put money into that one, so now I have to make this choice fix it or buy another car with little money.
#544 of 1101 Re: 96 jeep grand cherokee laredo -700.00 HELP ME [cole15]
Jan 11, 2010 (4:55 pm)
Did you ever check your Throttle Position Sensor for problems? My 98 Cherokee used to start out fine in first, then slip and rev where 2nd and 3rd gear should have been. Apparently the TPS circuit (my TPS wiring harness plug to TPS connector was bad) was giving the computer sporatic readings simulating a bad TPS.
#546 of 1101 my jeep grand cherokee does not change gears
Jan 18, 2010 (7:28 am)
hi,i bought jeep grand cherokee ,reg.52,2.7d,a few months ago and sometimes light for engine was on dashboard. now the light is always on and jeep does not change gears,it runs only on 1st one when is selected on drive.i can reverse and put it on neutral as well but on drive runs on 1st one and do not change gears.could someone tell me what's wrong with it ,pl?many thanks.kek
#547 of 1101 2007 Jeep Gr. Cherokee Laredo -- transmission
Jan 18, 2010 (11:36 am)
Periodically, after driving and putting gear selector into "park", the dashboard indicator reads "transmission over temp". Has anyone out there experienced this and, if so, what is the solution?
#548 of 1101 Re: Transmission Problem? [stelmt81]
Jan 19, 2010 (7:37 pm)
Dealer looked at my transmission estimated it was $5000 to replace it. Then called me later to tell me they would accept it at trade-in for $9500 despite the transmission problem. I think I'm being fleeced here.
Specs on my 2006 Grand Cherokee Laredo
Only 33,500 miles
V8, 4.7 L
I wrote earlier what my original problem was. It worked fine on the ride home from work. Next morning on a cold startup, it would not engage reverse or drive. At least it parked. Tried it again later... and reverse will catch, but not drive. I have to rev the engine around 6000 rpm in order for it catch in gear to drive, automatically stays in 3rd until it comes to a rest and have rev it high again to catch.
Anyways, I'm almost certain I don't need the trans entirely replaced. I feel like I'm being conned out of at least $5000.
P0871 OD Switch functionality
P0876 UD Switch functionality
P0731 Gear 1 ratio
P0732 Gear 2 ratio
P0733 Gear 3 ratio
P0944 Hydraulic Pressure Unit Loss of Pressure
#549 of 1101 Re: Transmission Problem? [lupering]
Jan 20, 2010 (4:41 am)
Don't know if you have access to the 545RFE manual, but it can be viewed at: link title.
An excerpt from the manual states:
"The hydraulic control system design (without electronic assist) provides the transmission with PARK, REVERSE, NEUTRAL, SECOND, and THIRD gears, based solely on driver shift lever selection. This design allows the vehicle to be driven (in“limp-in” mode) in the event of a electronic control system failure, or a situation that the Transmission Control Module (TCM) recognizes as potentially damaging to the transmission. The TCM also performs certain self-diagnostic functions and provides comprehensive information sensor data, DTC’s,etc.) which is helpful in proper diagnosis and repair. This information can be viewed with the DRB scan tool."
Besides having the trouble codes read, has anyone looked at the TCM with a DRB scan tool? If you do get someone, pick and choose carefully, as I had the dealer transmission mechanic analyze mine and he came up with nothing. (After my own tinkering, I found it to be one of my solenoids) That was after I wasted a hundred bucks at the dealer. Does your Jeep operate in "limp" mode? Also, I notice some of the sensors are located outside the transmission making it a little easier to get at. Page 74 of the manual has interesting information on the "Line Pressure Sensor".
At 33,500 miles, your Jeep is still new. I would find it very hard to believe something more than a sensor, solenoid, or some other electronic related problem is happening. Please keep us posted, as the more info to go on, the better.
#550 of 1101 Re: Transmission Problem? [nneal]
Jan 20, 2010 (6:19 am)
I called the mechanic at the dealer again to get a few more details. She said there were bits of the clutch in the trans pan. I asked her to take pictures and email me. I'm very skeptical of everything that's being told to me. I got an email back, however she said she couldn't take a proper picture. I asked to come in on Friday afternoon so she can show me. After I view it, I'll take my own pictures and see what's really going on. I'm definitely leaving the dealer to a real transmission place.
Could I possibly burn up the clutch to a point where parts of it are laying in the trans pan? Wouldn't I know if it was ruining my clutch, via smell or sounds, etc? How about the fact they want to replace the whole transmission instead of replacing the clutch?
#551 of 1101 Re: 96 jeep grand cherokee laredo -700.00 HELP ME [cole15]
Jan 20, 2010 (1:07 pm)
I had a similar issue. Would not shift at all out of first. Turned out to be a transmission speed sensor. It actually had a crack in it. You can easily see it hanging off the bottom of the transmission if you crawl under the vehicle. I replaced it myself, like a $40 part and some butt connectors. Check this site link title and a Haynes manual have saved me a lot of shop time. Good luck
#552 of 1101 Re: Transmission Problem? [lupering]
Jan 21, 2010 (4:41 am)
Residue in the pan is normal. You just don't want to see a lot of it, large chunks or shavings. Mine had a gray paste residue around the magnets from normal wear.
Found this diagnostic manual link title and thought it might be helpful in your analysis.
What I'm interested in knowing is what causes P0871 (OD Pressure Switch Sense Circuit) and P0876 (UD Pressure Switch Sense Circuit) to be set. From the manual it states:
LINE PRESSURE (LP) SENSOR
The TCM utilizes a closed -loop system to control
transmission line pressure. The system contains a
variable force style solenoid, the Pressure Control
Solenoid, mounted on the side of the solenoid and
pressure switch assembly. The solenoid is duty cycle
controlled by the TCM to vent the unnecessary line
pressure supplied by the oil pump back to the sump.
The system also contains a variable pressure style
sensor, the Line Pressure Sensor, which is a direct
input to the TCM. The line pressure solenoid moni-
tors the transmission line pressure and completes the
feedback loop to the TCM. The TCM uses this infor-
mation to adjust its control of the pressure control
solenoid to achieve the desired line pressure.
At this point, I'm suspecting this very possibly might have something to do with it. Any type of solenoid is a possible "weak link" in the chain.