Question about 1999 Jeep Grand Cherokee

10 Answers

Guages and windows going crazy

Hey guys i got a 1999 jeep grand cherokee that has been a good vechicle unitl recently. The problem i am seeing is when i turn on the key everything works windows,cd changer over head display ( the directional and temp display on the top ) but when i start the jeep all the guages fall to the left and all the lights come on check enginem air bag,security key light ,low fuel basicaly every light in the cluster and the guage lights come on also. now the jeep stays running and can be driven but the windows dont work the cd player dont work the overhead display dont work and none of the guages move even the miles dont count i have pulled the pcm battery fuse a few times put it back in and some times it would spring back to life also pull the light switch to make the light flash like when your passing someone will sometimes make a guage jump or a buzzer come on.
none of this ever happen until my wife wa out of work for surgery and i drove her car to save gas and the jeep sat until the battery died about 2 weeks maybe 3 i unhooked the cables and charged the battery and it has been fine since then but now the guages are going nuts any ideas or possible fixes thanks for lookin

Posted by on

  • 4 more comments 
  • jimmydbiker Sep 22, 2008

    i have the same problem and i think it's the PCM?

  • Anonymous Sep 27, 2008

    Same exact problem, no idea what it is though, very irritating. I thought it was maybe a short in one of the wires.

  • Anonymous Sep 30, 2008

    Same as stated above. Dealer put in new computer yesterday, less than 24 hours later, SAME PROBLEM. They are at a loss.

  • dfaires Oct 01, 2008

    My power windows on the passenger side don't work. My radio works for a second or so then shuts off. My lights on the dash are dim. We were told to replace the BCM, so we did for $700 - didn't fix a thing!!! UGGHH. Please help!

  • Anonymous Dec 08, 2008

    I HAD a very similar problem until I took our 1999 Jeep Grand Cherokee to a dealer who had a tech who actually knew what to look for. It turned out to be a short in one of the wires along the harness leading into the PCM that had been caused by a leak into the inner passenger compartment. It took him 3.6 hours at $85 to pinpoint the spot where the short occured, but that was MUCH better than the dealer replacing hundreds, if not thousands, of dollars worth of computer modules that were in perfectly good working condition.

  • bgkelly Mar 10, 2009

    My 2000 Jeep GC recently started doing this. Is it possible that the problem is caused by a weak battery and replacing it would solve it?

×

10 Answers

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 8 Answers

There is a one-wire communications bus system in these cars, called by Chrysler the "PCI" bus. The symptoms described strongly suggest a failure of bus communication. Depedning upon whichpost one reads, it appears either to be a partial or imtermittent failure or a total failure. For example, the information for the guage readings on the instrument panel comes from PCM (Powertrain Contol Module) transmissions sent over the PCI bus. No info, no guage readings. The problem is that, as far as is presently known, there does not exist any 3d party (aftermarket) equipment to communicate over the bus, and, according to a jeep tech interviewed today, one will not get any good hints from anything that appears at the OBDII connector (which can be read by any of various generic scan tools.) There is a proprietary Chrysler device called a DRB-III (that is now sold at some automotive outlets for a little over three thousand dollars for the unit) that will communicate with PCI devices about what they are hearing and saying over the PCI bus.

So... you can test, so of, an instrument panel, by holding in the odometer reset button while turning the key on. The guages will sweep, all the lights will come on, the segments will illuminate in sequence if the instrument panel is good.

Beyond which, you need to get the car to a DRB-III scanner, see which module (about eight choices -- door modules, a radio connection, etc.) is messing up communication on the PCI bus.

Posted on Dec 04, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

One of too problems pcm cluster just had one at the dealer and found that cluster was taking the bus down checked it at the bus port all modules have a voltage limiter and when they go out it will take the bus down.only when jeep is running due to alt voltage.

Posted on Feb 08, 2013

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I recently purchased a 99 jeep grand cherokee and it stalls while driving??? Very dangerous no real warning until it happens gauges go completely dead then its dead. It will restart but it has to be in park will not start in neutral...not sure but I am wondering where i cna find the PCM ?

Posted on Sep 06, 2010

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

97 jeep grand cherokee gas gauge stays at empty after putting 30 dollars in the tank.

Posted on Nov 26, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I had that problem with my 2000 Grand Cherokee. The gauges would flicker like crazy when I first started the car, of which by the way was starting slower each time I attempted.
Finally it wouldn't start and the were dancing all over the place. The rep. responding from AAA road services first attempt at starting the car did not work and he suggested that I had a more serious problem. I insisted that he try again giving the battery a little time to recharge; he did, and car started, I drove straght to sears for a battery replacement..............No more problems. It's been over a year since that happened. Good luck.

Posted on Apr 09, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I cannot get the windows to operate. I also cannot find the appropriate fuse box to check the fuse. Any ideas?

Posted on Mar 29, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

I had the same problem as you my firend an because of my father in law left my headlights on 2 times on my 97 jeep the altenator was bad i had all the symptoms as u an for changing it fast
i was stuck in a highway for 5hr in 20degrees wheather with my wife take it from me replace it NOW

Posted on Mar 28, 2009

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 275 Answers

Had a car in my shop with exactly same problems. Found that it was the negative battery clamp making bad contact with the terminal. I replaced the clamp, cleaned the negative and positive battery posts, refitted the clamps and VOILLA all was fine. Road tested and still good. Hope this helps.
Tony from Croatia

Posted on Feb 13, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

We had almost the EXACT same problem with our 99 Grand Cherokee. The difference was that our Jeep wouldn't stay running after 5 seconds (security shutoff), the power windows, mirrors and locks wouldn't work and the overhead display was stuck in some "reset mode". I took it into a dealer who had a tech who actually knew where to look! It turned out to be a short that had occured in the wiring harness leading into the PCM. The short had been caused by a water leak in the front of the inner passenger compartment. It took him 3.6 hours at $85 an hour to pinpoint the exact spot of the short, but that was WELL worth it to me, especially when the other option is a dealer trying to replace everything an nothing improving in the long run! As soon as he hard wired around the shorted section of the harness - which is ALOT cheaper than replacing the entire harness, everything immediately came back on line! Good luch everyone!

Posted on Dec 08, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

YA, its the white casing in the passenger door that is doing all these crazy things, you probably need to replace your passenger control module because it is wigging out, temporary fix is to just unplug the white plug in until you get a new one.

Posted on Oct 02, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have a 99 jeep grand cherokee 4.7, the alarm went crazy and the wont start. guages dont budge and horn keeps honking and lights flashing. sentry key light is on in guage cluster any help


Sounds like you need to perform a relearn on the anti theft system, it's not recognizing the key if this happens with the key inserted. Might want to look online for a reset procedure for Jeep. GM has you keeping the key in the ignition in the on position for 10 minutes.

Jul 17, 2014 | 1999 Jeep Grand Cherokee

1 Answer

1999 grand cherokee won't shift out of first with gas light on


You need to have the vechicle scanned for codes.I believe you are going to limp in mode on the computer.Have them check all codes,transmmission and body along with engine.

Apr 16, 2010 | 1999 Jeep Grand Cherokee

1 Answer

Hey. You have been real helpful guys. It was the head gasket (my '97 cherokee sport). But now... My Mom's 2003 grand cherokee when going downhill of relatively fast with rear windows down has a deafening...


it shoulnt be nothing just the noise it make i bet u roll all the windows down u wont hear it try it bet its just the way the air moves in your jeep as u are driving

Oct 06, 2009 | 2003 Jeep Grand Cherokee

2 Answers

My dash board of my grand cherokee laredo 2003 went crazy. guages started to move after i have had pull out the keys.. then i drove and stop and turn off the engine and shot down completelly... what can i...


I have had this problem a few times on my 2003 Grand Cherokee. After the guages go crazy then the thing will not start. First two times I replaced the battery and it fixed the problem for a short time. The real problem was corrosion on the battery cable(positive/red cable) I took some Coke and a wire brush and cleaned the cable, ends and battery terminal. This fixed the issue.

May 13, 2009 | 2003 Jeep Grand Cherokee

1 Answer

2000 Jeep Grand Cherokee In'line 6 cyl.....Erratic guages... check guages light goes on, guages go off for 10 seconds, then back on. Speedometer jumps. Idiot lights sometimes come on for a few seconds...


This will be challenging to find ... If headlights dim or flicker too ... check battery terminals first. But I think it will be a large harness with quite a few wires on it ... Check ... for loose bulkhead connectors at the firewall ... and between the Engine and the body/firewall .... at the ECU .... you may also check for loose harness connectors at the fuse box. check for loose or corroded fuses ... especially if a cover is missing.
If I remember correctly this truck has 3 fuse panels in it. Check the manual

May 12, 2009 | 2000 Jeep Grand Cherokee

1 Answer

2000 Jeep Grand Cherokee Limited Fuel Filter


Sorry brother, it is in the gas tank with the pump. they used filters that are suppose to be good for the life of the vechicle. you can see the plug if you lift up your spare. hope you dont HAVE TO go in there.

Mar 16, 2009 | 2000 Jeep Grand Cherokee

Not finding what you are looking for?
1999 Jeep Grand Cherokee Logo

1,978 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

yadayada
yadayada

Level 3 Expert

60769 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

Are you a Jeep Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...