speedo, tach, and fuel gauges not working.. - JeepForum.com

 
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post #1 of 14 Old 08-06-2008, 08:07 AM Thread Starter
xjcowboy01
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2001 XJ Cherokee 
 
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speedo, tach, and fuel gauges not working..

So I just bought my old '93 xj back from my buddys family and all is the same except for some reason right before i got it the tach, speedo, and fuel gauges quit working. The fuel gauge is pinned all the way to the right but the low fuel light is on. And the tach, and speedo just dont respond at all. I tried switching out gauge clusters and that didnt help. All fuses are good too. My buddys dad had worked on it a couple days before I got it and thinks it could be something to do with one of the sensors on the throttle body or possibly something to do with an old fuel pump. Anybody have any idea where i should start?


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post #2 of 14 Old 08-06-2008, 03:36 PM Thread Starter
xjcowboy01
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Ok well I took out the gauge cluster and cleaned the connections with no luck. I cleaned the speed sensor at the transfer case and fuel sending unit at the gas tank and still nothing. I made sure I had good battery connections and even switched out batteries with a new one to make sure I was good to go. I checked all ground wires and rechecked all fuses. I turned the key 3 times to get the trouble code and it flashe 1 2 5 5. The first code 12 means the battery was disconnected which is true but i could not find out what 55 was. All other codes in the fifties were related to the PCM. Would a bad PCM cause this since the jeep has 251000 miles on it. But all other things run fine. If someone could help I sure would appreciate it.

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post #3 of 14 Old 10-03-2008, 09:00 PM
csouers
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I know this is old, but the 55 means the end of the code transmission. It just lets you know that there are not any more codes present.
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post #4 of 14 Old 12-03-2009, 02:08 PM
jeepfromhell610
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this is a really old post so i'm hoping maybe you've gotten the problem fixed since then? i have the same problem in my 95 cherokee country nd was wondering if you could help
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post #5 of 14 Old 04-27-2010, 09:29 PM
mikey4592
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I'm having the same problem on my 95 Cherokee. I've been doing some research and some people say the BCM Body Control Module could be the problem. Gonna try and get one from a junk yard and see if that works. Several people say it's a bad ground but I have checked all mine and can't find any that are bad. If you found the problem, can you post the solution?
Mike
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post #6 of 14 Old 04-27-2010, 10:35 PM Thread Starter
xjcowboy01
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Im sorry its so late with the response. I posted the answer in another post of mine at the time. The problem was broken ground wires on the engine block. This was possibly because of engine mount failure causing the wires to break. There are 3 wires on the passenger side of the engine just behind the distributor. These wires are just bolted onto the engine for grounding. All of these wires control gauges. Check there I bet thats the problem.

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post #7 of 14 Old 05-28-2010, 05:21 PM
Jwhit001
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1996 XJ Cherokee 
 
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speeedo, tach, fuel gauge problems

Thanks for the info. I found a broken ground wire on the left side of the block, problem fixed.

Jeff
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post #8 of 14 Old 12-02-2010, 03:50 PM
tateedge
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1996 XJ Cherokee 
 
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next time add a new connection to the wire off the ground and then go to your transfer case underneath and pull out the speedometer reader and see if its TOAST! cause if that wire fell off chances are it could kill that reader
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post #9 of 14 Old 10-11-2013, 03:19 PM
Realbass
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Eureka! It worked!!


Three clusters later, and after much head banging and hair pulling, my wife found this post.
Thank you, thank you, thank you to the person who suggested checking the three ground wires on the passenger side of the engine! I found a broken wire there, and when it made contact, all the gauges began working, including the overhead compass, and air temperature, which had also stopped working. I am so happy!
1996 Jeep Cherokee Country. 18 years old, 243K Miles, and still running strong!
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post #10 of 14 Old 10-20-2013, 11:12 AM
bjones74
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Moving to a new thread. Thanks!


Hi,

I have a 92 Laredo. My symptoms are Speedometer will only go to about 25mph. The odometer turns very slowly and the tach also will only read up to 1000 rpm. The overhead Temp and direction are usually blank, every once in a while it will show a couple of dots and only once have I ever seen it display correctly. Do these symptoms seem like ground problem? I am about to go outside and try to find the 3 wires near the distributer on the motor. Is there an easy way to test they are working correctly?

Thanks,

Brent

1992 Cherokee Laredo

Last edited by bjones74; 10-20-2013 at 01:59 PM.
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post #11 of 14 Old 11-09-2014, 09:17 AM
Kyle2544
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93 Jeep Wrangler tachometer

My tach quit working on 93 wrangler. Where do I start looking for fix?
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post #12 of 14 Old 08-23-2015, 05:25 PM
zalantar
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1996 XJ Cherokee 
 
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Location: Riner
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Just finished replacing the front brake lines on my '96 XJ only to have this issue when I got done. On first look, it seemed that the 3 ground wires on the passenger side of the block were ok. When I looked closer, my '96 actually has 4 wires. The broken one is a much smaller gauge than the other 3. It black with a red-orange stripe visible to the left side of the stud.
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post #13 of 14 Old 02-16-2016, 01:45 PM
beb101
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Quote:
Originally Posted by xjcowboy01 View Post
Im sorry its so late with the response. I posted the answer in another post of mine at the time. The problem was broken ground wires on the engine block. This was possibly because of engine mount failure causing the wires to break. There are 3 wires on the passenger side of the engine just behind the distributor. These wires are just bolted onto the engine for grounding. All of these wires control gauges. Check there I bet thats the problem.
To XJCowboy. THANK YOU for the ground wire fix for the speedo, tach and fuel gauge on my 95 Cherokee Sport. No engine mount problems, just oil soaked wiring from a long term continuous slow leak out of a bad oil pressure sending unit just in front of the ground lug. Replaced sending unit, repaired broken wire, gauges working fine now.
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post #14 of 14 Old 05-26-2016, 06:15 PM
4638jay
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+1
This fixed my tac/fuel/speedo problem on a 96 Jeep Cherokee Classic 4.0.

Last edited by 4638jay; 05-26-2016 at 06:19 PM. Reason: added clarification
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