Question about 1994 Jeep Grand Cherokee

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Low gear and overdrive doesn't work

Has new transmisson also has new tcm . the indicator light for the od on and off switch works for about 1 second after the engine is started then loses power. turn the key off and the light works again. doesn't always do it sometimes it will function correctly for days,but when the light does not work low &od does not work.

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  • Jeep Master
  • 6,674 Answers

You need to get it back to where transmission was done, and let them correct it. If anyone else touches it, they can always blame it on them.

Posted on Mar 07, 2009

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1993 jeep grand cherokee is stuck in second gear, the overdrive button is not functioning, and getting the data control center says service 4wd switch


wow no engine size stated, the 5.2L run a special trans... so....
hopeless to help you much.
zj jeep with automatic.
it didnt lie, it told you to service it, so take it to a shop and let the work on this old dog..
stuck , now what does that mean.
the shift lever lever stuck, or its cable failing end to end.? or?
or shifts from 1 to 2 and hangs there.
or down shifts from 3 to 2 and and hangs there
DIY ? question is that it? you never said intentions.....
so we open the 93 ZJ book and what do we see.
ax-15 stick box, seems not.
the aw-4 auto , electronically shifted with TSM (scan it yet?)
and the 46RH auto. used on the 5.2L, has no TCM brain.
its a Hydramatic.
here are the OD words off the 46h page

Overdrive Control Switch
The overdrive control switch is located in the instrument
panel. In the On position, automatic shifts
into fourth gear overdrive will occur. In the Off position,
the switch overrides the powertrain control module
preventing a shift to overdrive fourth gear range.
The switch has an indicator light that illuminates
when overdrive is turned off. The switch also resets
when the ignition key is turned to the OFF position
so that the automatic overdrive feature is restored.
The use of fault codes is employed to help diagnose
the electronic components that operate the overdrive
unit and torque converter clutch.

Jul 16, 2016 | 1993 Jeep Grand Cherokee

1 Answer

I have a 1995 Suzuki Sidekick jx it will not drive forward but will drive in reverse. I put oil in car and the transmisson fluid is full what could be the problem


95 jx
but is it 3speed or 4 speeds.
if 3speed, the lever not really going to Drive?
if that does happen the trans is bad.
if 4sp, (see od light see od switch and P/N switch that is 4speed
as is the 2 on gears, if 4speed it has a TCM brain
the tranny brain, and we can scan, it , or more accurately a jumper
clip , and the TCM flashes out codes
is the the OD lamp flashing, yes that is the TCM begging for help.

next time post trans gear counts, as we can not guess that ever
nor engine. 95 had 2 engine choices.

the 3speed also has a filter in the pan area (above)
if packed in junk,, as they all do. it will only shift hot. or not at all.
its called a full flush, with filter. not a lame drain and fill.

Mar 14, 2015 | 1995 Suzuki Sidekick

1 Answer

When shift indicator light blinks off transmission miss shifts


The light indicates a fault has occurred in the transmission or the electronic control sensors and actuators. You need the dealer to scan the transmission control module (TCM) to see what fault code is stored and then based on that code perform diagnostics and repair the transmission.

Apr 01, 2014 | 2011 Chevrolet Colorado

1 Answer

Location of transmission temperature sensor 2002 liberty


on the transmission. 45RFE trans.?
is the engine overheating?



The transmission temperature sensor is mounted on the overdrive/torque converter clutch solenoid assembly and provides input to the TCM. When the temperature sensor reports 30 degrees F or colder, there will be no overdrive, and below 50 degrees F, there will be no torque converter clutch. If the transmission fluid temperature sensor reports an overheating condition (over 260 degrees F) and the transmission is currently in overdrive, the TCM will downshift to third gear. The TCM will also light the LED in the dash-mounted OD off switch until the temperature drops below 230 degrees F. However, the torque converter clutch may still be operational.

Mar 16, 2014 | Jeep Cars & Trucks

1 Answer

Transmission only has second and third gear


run fault codes and look for TCM failure or OD solenoid servo fault.

Dec 07, 2013 | 1995 GMC Sierra C1500

1 Answer

No overdrive 1992 geo tracker


first the fuses, all 6, yes 6.
4speed tranny, and is TCM (puter brain) shifted.
no flash codes from TCM?
http://www.fixkick.com/tranny/slush/OD-flashes%20now%20what.html
the TCM controls all 3 shift solenoid.
and OD, has many defeat rules in logic of TCM
one is if TCM , sees 4wd drive active it will not use OD
if the TCM sees errors, (did you dump the flash codes yet?)
it fill not use OD
if the TCM , sets limphom mode, (fail safe) it will not use 0D
or may skip second and use 0D. all this is in the FSM.
there is the tcm brain
http://www.fixkick.com/tranny/TCM/Tcm-macro1.jpg
here is a free online fsm on topic.
chapter 7? RTM
http://www.acksfaq.com/trackerfsm.htm
and 8a-39?

Mar 25, 2013 | 1992 Geo Tracker

2 Answers

Codes P1782, P0755, and P0700


P1782 DODGE - 2/4-OD Pressure Switch Circuitxicon.jpghttp://engine-codes.com/p1782_dodge.htmlForum CodePossible causes- Low transmission fluid level
- Dirty transmission fluid
- Faulty 2/4-OD Pressure Switch
- 2/4-OD Pressure switch poor electrical connection
- 2/4-OD Pressure switch circuit is open or shorted
Symptoms- Engine Light ON (or Service Engine Soon Warning Light)
- Transmission shift shockP1782 DODGE Description The pressure 2/4-OD Pressure Switch is part of the pressure switch of the transmission. The pressure switch are located in the solenoid assembly. The switch provide input information to the Transmission Control Module (TCM). The switch will inform to the TCM is pressure exist in a specified hydraulic circuit. the TCM uses this information to verified that the solenoids are working or not.
P0755 DODGE - 2/4 Solenoid Circuitxicon.jpghttp://engine-codes.com/p0755_dodge.htmlForum CodePossible causes- Low transmission fluid level
- Dirty transmission fluid
- Faulty 2/4 solenoid valve
- 2/4 solenoid valve harness is open or shorted
- 2/4 solenoid valve circuit poor electrical connection
P0700 DODGE - Transaxle Control System Malfunctionxicon.jpghttp://engine-codes.com/p0700_dodge.htmlForum CodePossible causes- Shorted or open circuit within transmission control module (TCM)
- Failure of transaxle control module Tech notes Since the P0700 is just and informative code, check the TCM for more codes to resolve the problem.
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Driveability problems
- Transaxle shifting problems

Jul 26, 2012 | Plymouth Breeze Cars & Trucks

1 Answer

OVERDRIVE STUCK AND BARELY MOVES IN DRIVE.1 AND 2 GEAR WORKS OK


When the OD light flashes in this model it means that the Transmission control module (TCM) has detected a fault in the operation of the transmission. What needs to be done now is to have the TCM scanned for fault codes by a ****** repair shop and then they can make a preliminary diagnose of the problem and the cost to repair. In my opinion you have a failed transmission and it will need an overhaul or an exchange tranmssion.

Jun 21, 2012 | 2003 Lincoln Navigator

1 Answer

Transmisson overdrive


does your truck have an od on/off switch?if so its bad.if not you have an overdrive solenoid on trans that is going bad.GinoR

Mar 22, 2009 | 1991 Ford Ranger Supercab

2 Answers

1995 buick century transmission trouble


Most likely causes is the OD shift solenoid or less likely the VSS

Oct 25, 2008 | 1995 Buick Century

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