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post #1 of (permalink) Old 09-13-2003, 01:12 PM
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97 TJ Compuer Broken?

The fuel gauge on my dash does not work at all. I have an autotap scan tool which can read the fuel level from the computer which indicates that the sending unit is fine. I performed TEST3A from the Jeep Diagnosis manual I have and the fuel level moves and goes through E,1/2,F as it should. All the other gauges in the instrument cluster work fine. Does this confirm that my computer (PCM) needs to be replaced? If so, should I do it myself or take it to the dealer?

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post #2 of (permalink) Old 09-14-2003, 06:03 AM
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Re: 97 TJ Compuer Broken?

Errr....I think that you answered your own question ...if I read you right. The sending unit is generating a signal that the PCM is integrating and your scan tool is reading that output.

I could be wrong (there's always a first time [img]images/graemlins/grin.gif[/img]) ..but I think that the problem is either in the self docking connector behind the dash (not all the connections come loose at once) ---OR---- is a printed circuit/guage problem local to the dash.

Have you given the dash a decent bump with the heel of your hand?? Works wonders when various (not all) stuff goes out on my 99.

I think that there is nothing wrong with your computer. If there was, you would do it yourself ...but may have to have the seller (depending on who they are) to program your VIN and mileage into the new PCM

dorfs would know the best route to take in this situation. For both the gauge and the PCM.
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post #3 of (permalink) Old 09-14-2003, 11:40 AM
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Re: 97 TJ Compuer Broken?

Does this apply? See attachment.
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File Type: pdf 1186838-14-03-97.pdf (35.8 KB, 7 views)
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