Get the A/T serviced?
did you plug in a scan tool yet, and look for DTC errors
if not why not. this is first. as are fuses and A/T fluid levels,
Testimonial: "thank you for the last post with all the info and yeah I have pulled the battery a while back one more question I just noticed that no matter I'm in once I reach 3200 rpm it bottoms out wish I could explain it better it looses all power and do sent do anything until I back out of it I've never been able to just mash the throttle not even on take off even if I take off and spin tires once I back out she sputters and dies just noticed that today I know its something small I'm over looking I just got thru rebuilding internals of block last winter myself it help but I still have this problem I have been all over this thing maybe its not tranny but I've also replaced all vac hoses wires plugs put a cold air on it bigger throttle body nothing fixes it it gets more power just same as always if I push to far on throttle to fast or hit 3200 rpm in any gear she falls flat on her face I haven changed exhaust yet or my fuel filter u think it could be that simple fuel filter I've been dealing with this two years o and I have no engine light on in my cluster I have no computer scanner yet I'm saving for one."
Ya man I'm pretty familiar with working on cars just Chevy is where my experteze lie not to familiar with dodge I'm pretty shure its shift silinoids under filter just need second opinion
so why not scan, it, even to the point of scanning while driving see all those DTC errors, why miss that? The TCM will report errors. if it cant shift, and sometimes why. like shorted solenoid coil, or?
if it has a shift detent cable chack that its working on both ends TV cable to dentent valve, im not sure which of 2 transmission that car has. alldata.com, look, there, see what you have.
2007 Jeep Grand Cherokee, shifts late. so is transmisson slipping? if not it just shifting late. 545RE or the NAG1 tranmsision. The 545 is electronically shifted, and any scan tool can show this set of codes, (ever scan it) P0122-TPS/APP Circuit Low P0123-TPS/APP Circuit High P0124-TPS/APP Intermittent P0218-High Temperature Operation Activated P0602-Control Module Programming Error/Not Programmed P0604-Internal Control Module RAM P0605-Internal Control Module ROM P0613-Internal Transmission Processor P0726-Engine Speed Input Circuit Range/Performance P0731-Gear Ratio Error In 1st P0732-Gear Ratio Error In 2nd P0733-Gear Ratio Error In 3rd P0734-Gear Ratio Error In 4th P0735-Gear Ratio Error In 5th P0736-Gear Ratio Error In Reverse P0740-TCC Out Of Range P0944-Loss Of Hydraulic Pump Prime P1684-Battery Was Disconnected P1715-Restricted Manual Valve In T3 Range P1736-Gear Ratio Error In 2nd Prime P2700-Inadequate Element Volume LR P2701-Inadequate Element Volume 2c P2702-Inadequate Element Volume Od P2703- Inadequate Element Volume UD P2704-Inadequate Element Volume 4
did you pull the battery connections or have a dead battery , it can be in transmission learn mode.?
here ill post the full list of steps in the FSM for 545RFE next
45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE For a complete wiring diagram Refer to Section 8W. Perform the following before attempting any diagnostic procedures: With the scan tool check pinion factor (if equipped) for proper tire identification and program or reprogram if necessary. Check the transmission fluid level. If the fluid level is low, locate and repair any leaks and fill the transmission to the proper level. Refer to the appropriate Service Information for procedures. Many transmission symptoms can be caused by a low fluid level. Check the battery. To avoid false diagnosis, testing should only be performed with the battery fully charged. With the scan tool, read Engine (PCM) DTCs. If DTCs are present, refer to the Driveability Category and perform to the appropriate diagnostic procedure(s) before proceeding. With the scan tool, read Transmission (TCM) DTCs. Record all Stored, Active, and Pending DTC information. Diagnose any Pending DTC as a matured DTC. With the scan tool, read and record the DTC EVENT DATA. Use this data to identify the conditions in which the DTC was set. NOTE DTC Event Data may exist even if no DTCs are stored. DTC Event Data is only erased by a Battery Disconnect, reflash, or QuickLearn procedure. Clearing DTCs does NOT erase the DTC Event Data. Some DTCs require two "bad trips" before they are stored (and the MIL illuminates). The transmission may enter "limp-in" mode during the first "bad trip," but if the fault condition is not present after the vehicle is restarted, the pending DTC may be cleared without lighting the MIL. Nevertheless, the DTC Event Data for the pending DTC will remain stored and can still be retrieved with the scan tool. If the customer reports a "limp-in" event but no DTCs are present, check the DTC Event Data. Performing a Battery Disconnect will clear all DTC EVENT DATA and reset all learned Transmission values to the default values, which may temporarily result in erratic shift schedules. With the scan tool, perform the Shift Lever Position Test. If the test does not pass, refer to the diagnostic procedure for P0706 Transmission Range Sensor Rationality. For Gear Ratio Error DTCs, use the scan tool to view CVI Monitor data. Read and record the Clutch Volume Index information. Use the wiring diagram as a guide. Inspect the wiring and connectors related to this circuit. Repair as necessary. Refer to the When Monitored and Set Conditions for this DTC. DTCs can set at ignition on, at start up, after driving under specific conditions and after diagnostic monitors have been run. Refer to applicable Technical Service Bulletins (TSBs) for controller software update information. Some conditions can be corrected by upgrading the Engine (PCM) or Transmission (TCM) controller software. Refer to any Service Information Tune Ups or Technical Service Bulletins that apply.
pretty much same on all cars this new. not a new idea TCM shifted transmissions.
545 is used on : 2007 Chrysler Commander 2007 Chrysler Dakota 2007 Chrysler Durango/Aspen 2007 Chrysler Grand Cherokee 2007 Chrysler Ram Truck
here is a longer DTC list. in FSM: next, not looking first. well?
P0562-Battery Voltage Low P0706-Transmission Range Sensor Rationality P0711-Transmission Temperature Sensor Performance P0712-Transmission Temperature Sensor Low P0713-Transmission Temperature Sensor High P0714-Transmission Temperature Sensor Intermittent P0716-Input Speed Sensor 1 Circuit Performance P0721-Output Speed Sensor Circuit Performance P0750-LR Solenoid Circuit P0755-2c Solenoid Circuit P0760-Od Solenoid Circuit P0765-UD Solenoid Circuit P0770-4c Solenoid Circuit P0841-LR Pressure Switch Rationality P0845-2c Hydraulic Pressure Test P0846-2c Pressure Switch Rationality P0868-Line Pressure Low P0869-Line Pressure High P0870-Od Hydraulic Pressure Test P0871-Od Pressure Switch Rationality P0875-UD Hydraulic Pressure Test P0876-UD Pressure Switch Rationality P0882-TCM Power Input Low P0883-TCM Power Input High P0884-Power Up At Speed P0890-Switched Battery P0933-Hydraulic Pressure Sensor Range/Performance P0934-Line Pressure Sensor Circuit Low P0935-Line Pressure Sensor Circuit High P0957-Autostick Circuit Low P0958-Autostick Circuit High P0987-4c Hydraulic Pressure Test P0988-4c Pressure Switch Rationality P1775-Solenoid Switch Valve Latched In TCC Position P1776-Solenoid Switch Valve Latched In LR Position P1794-Speed Sensor Ground Error P2706-MS Solenoid Circuit U0002 CAN C Bus Off Performance U0100-No Communication With The ECM/PCM U0121-Lost Communication With ABS U0141 Lost Communication With FCM
thanks for the list I sent you a question but think I put it in the wrong box I believe I put it as a testimonial but what I was saying is I noticed that if I get up to 3 grand to 3200 it falls flat on its face lose his all powerit does that in all gears and if smash on the gas too far taking off or anytime for that goes it does the same thing I thought it was D transmission but I'm thinking it might not last winter I rebuilt engine replaced internals it gave more power but don't have the exact thing I'm talking about I have been dealing with this problem for 2 years I have no service engine light on I have replaced how old a oxygen sensors put a cold air intake on put a bigger throttle body on it all gave it more power but once again I still had this problem it doesn't really feel like a slip just a complete loss of power its hard to explain if you would like to give me a call I could explain it better 931 212 6847 Thanks James nowlin
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SOURCE: hard shift from 1st to 2nd gear automatic
what year is vehicle please ?? as people often put it in wrong catagory ,if its mazada 2007 then its dealer only as a computer controls it all and the software is factory encrypted to stop general garages from repairing it .But check for a vacumn pipe loose under bonnet ,thin rubber pìpe from inlet manifold to gearbor or a diaphram switch,
SOURCE: 02 jeep liberty won't shift into 3rd or 4th gear.
Ratio codes generally indicate a pressure loss & slipping which the computer reads as a gear ratio problem. Likely you need a rebuild.
SOURCE: car jerks to side when shifting gears
Hi, just had this problem repaired. The lower arm bushings are bad...not the transmission. I ordered two sets from the nubira site (for the left and right sides of the car)...they are kind of like metal rings with rubber inside...this rubber dampens the shifting from the transmission. $250 - $300 job. Sure that's what it is...
SOURCE: 2000 jeep grand cherokee limited starts in 3rd gear
oil pressure problem should be checked independently of other problems...Use a good accurate mechanical gauge to check. If pressure is good (no less than 15psi at idle hot (I prefer to see at least 20) check dash grounding, block ground and if OK, change sending unit. Dash and body ground can influence operation of shift and body control modules so indirectly your problem may or may not be related, depending upon what you find while testing. And it could turn out to be a defective module! They are expensive and just plugging new ones in may work, but then again, it might not. I might be totally incorrect on this...that's the value of actually being there instead of doing this by "remote control".
If you read the numerous posts pertaining to all vehicles, you will see that you are not alone with electrical problems...As long as the engineers who design this stuff, keep using "modules" to replace ordinary simple and reliable systems, we will continue to have these problems. Do some testing and I'm sure you will find a solution! (I'm still waiting for someone to make a program for a PC that will give a complete readout of every system in a vehicle, including exact faults instead of general system "suggestions")
Good luck
SOURCE: How to shift a 1998 jeep grand cherokee into 4 wheel drive
Four low is almost never used. I use it on very steep rocky or muddy trails in the woods or to pull someone out of mud or a ditch. Though some will shift standing still it is best do do this while rolling. Four high can be shifted at low speeds of 2 to about 35mph (higher also but not really good idea) Low can only be shifted between 2 to 10mph. If you find yourself stuck and unable to shift because you aren't rolling you can also turn the engine off, engage the transfer case and re-start. That avoids having the gears clashing together. Best rule is if it begins to grind, don't force it.
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