Question about 2003 Jeep Grand Cherokee

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1999 jeep grand cherokee overdrive does not work

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  • Jeep Master
  • 20,706 Answers

OD , id OD'd? LOL !!!!
huh?

please do explain, dont work.
it never engages
or hunts.
or lamp flashes (some early cars , flash it for failure)

The PCM on most 99 cars controls the engine and tranny all in one box. and can do many things, wrong, to cause OD to fail
even Limphome, mode. (btw tranny has its own limp mode too)
why not scan the PCM and pull out the DTCs for tranny
P07xx or?
that be first.

the PCM will in fact skip OD (top gear) if it thinks it will overload
the engine or tranny is malfing. (slipping and other checks)
the newer the car , the more of that protection is going on....
saving car from driver actions.

Posted on Dec 26, 2013

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Posted on Jan 02, 2017

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  • 2 Answers

SOURCE: 94 jeep grand cherokee will not shift into overdrive

My 97 Jeep Grand Cherokee was doing the same thing. I changed the TPS ( Throttle Position Sensor) Now it is great goes into overdrive fine. It is really easy to change.

Posted on Feb 11, 2009

  • 6982 Answers

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

Posted on Apr 07, 2009

  • 150 Answers

SOURCE: 1999 jeep grand cherokee - brake lights and turn

The tail lights and the brake/turn lights use the same bulb but, there is 2 filamants in the bulb. One for tail lights and one for brake/turn lights. So just because the brake lights and turn signals work doesn't mean the bulbs are good. If bulbs are good you can check to see if there is power getting to the tail light assy's by unplugging the connector at the assy and using a test light probe the connector (harness side) with the headlights on. If you are getting power to the assy the test light will light. To make sure, turn off the headlights and test light will go off. Hope this is helpful. Good luck.

Posted on May 29, 2009

  • 323 Answers

SOURCE: Jeep Grand Cherokee Limited P0700 diagnostic problem

P0700 means there is a transmission fault code in the transmission controller. Since the transmission controller doesn't have a light attached, it tells the engine controller to turn the light on using this code. You'll have to access the transmission controller to further diagnose the problem.

Posted on Jun 14, 2009

techbuster
  • 5081 Answers

SOURCE: shift indicator light 1999 Jeep Grand Cherokee

There are two parts to it, a voltage resistor, and the EL panel itself.

You need to remove the console first. There are 2 screws under the front rubber pad, two under the cup holder, two in the bin. Remove those six first, take the storage bin out, then slide the rear cupholder out, remove the two screws under the cup holder, and one in front of it.

There are a total of 6 flat screws, and 3 self tapping screws you have removed.

Put the parking brake on, shift the tranny to N, and the transfer case to the middle position if equipped.

Remove the entire console. Slide the shifter beezel as far up vertically as you can. There are 4 clips you ned to remove to do it.
You will see a blue and black wire running into the back. Follow those wires to the resistor. You will see a transparent EL panel attatched to the resistor by two clips.

Usually, one or both of these clips has come loose, causing the light to work intermittantly. Clip them back on, and turn on the headlights to confirm that the light works correctly now.

Re-install everything in the opposite order.

Posted on Oct 11, 2009

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Jeep grand cherokee will not go in to overdrive


was the computer for that exact year and model ? computers have to be matched to that same model to run the same transmission as in the vehicle example 1999 ford crown vic trans.put in a 2000 crown vic even though the trans. is the same the ccomputer reads trans. is built for 1999 cause of the program in the comp.

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When is the overdrive in the jeep grand cherokee engaged? when the light is showing on the dash or not?


when the light is showing on the dash it is disengaged only when you do not see the light it should be working

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Replaced transmission seal then on 2 different occasions going down highway at bout 65 to 70 miles hour transmission kept shifting btween overdrive n drive come to a stop n take off didnt do it again...


Computer controlled transmissions can get confused at times, from my personal experience. If the problem doesn't happen again, I would ignore it. If it happens all the time, it's most likely the transmission computer. Other things could be the shift linkage, engine vacuum leak, speed sensor, etc... Hope this helps.

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On the left side of the shifter is an overdrive lock-out button for use with towing/hauling or hill climbing. Depress it and you should be good to go.

Jan 17, 2010 | 2003 Jeep Grand Cherokee

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Check the adjustment on the brake switch. If the brake switch is not seated properly it will engage when hitting bumps and tell the tranny to come out of overdrive.

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94 jeep grand cherokee will not shift into overdrive


My 97 Jeep Grand Cherokee was doing the same thing. I changed the TPS ( Throttle Position Sensor) Now it is great goes into overdrive fine. It is really easy to change.

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