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Old 01-25-2011, 04:29 PM   #1
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problem with speedo and tach

Hello, I'm a newbie and I'm really impressed with this forum. Yesterday I made a newbie mistake and posted something to the wrong forum. I have a 2000 Wrangler with a 5 sp. and the six cyl. engine. My tach and speedo take turns working. The needles bounce up and down at will. I thought that maybe they shared a voltage regulator, so I took the cluster out; but it's all chips and laminated circuit board. I called the dealer, and he said that sometimes it's in the power distribution box (?) in the engine compartment; but it still isn't always replaceable. Has anyone else had this problem? Help. please.

Gary

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Old 01-25-2011, 04:36 PM   #2
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A lot of times the connector on the back of the instrument cluster can work it's way loose from rough roads causing some erratic things to happen on the dash. Check the connector and see if it wiggles or feels loose when plugged in. Maybe while the Jeep is running wiggle the connector and see if the tach needle goes crazy?

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Old 01-25-2011, 05:21 PM   #3
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Mine does the same, but it's the tach, speedo, and gas gauges. For some reason, maybe coincidence, when my doors are off it does it more????
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Old 01-26-2011, 03:55 PM   #4
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problem with speedo and tach

I found out that this is a typical problem, and there is supposed to be a service bulletin on it although I didn't find one. The problem is with the two connectors to the cluster, and the fix is to slightly bend with a small needle nose pliers the pins on the connectors on the cluster. You should only bend them very carefully about 10-15 degrees which will make them fit tighter. Evidently, the female connectors that the dash plugs in to loosen up with age. Thank you all for your help.

Gary
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Old 01-26-2011, 08:43 PM   #5
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Do u bend all of them?
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Old 01-27-2011, 11:37 PM   #6
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problem with speedo and tach

I would think so as eventually all of the female connectors will probably loosen up. Besides, I don't know if you can get a detailed enough wiring diagram to know which ones to bend. I did mine today, and it was very easy. Good luck with yours.

Gary
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Old 01-28-2011, 06:26 AM   #7
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Thank u Gary
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Old 01-28-2011, 07:44 AM   #8
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I have a 2000 TJ too, and had this same problem with the tack and speedo and all the other needles as well. It would also give a "No bus" code in the odometer window. I pulled the gage cluster out and cleaned the pins and female receptcles with a soft tooth brush, then I took a jar of vaseline and a cotton swab and put a dab on each pin and in each receptcle, wiped off the excess, and put it all back together. It has worked great ever since. the vaseline helps make a better contact, will keep moisture out, and will keep corrosion from forming on the cantacts. Old aircraft mechanic's trick.

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