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10 Posts
Hey everyone, new to the forum here and wanted to say thanks in advance of all the expertise present. I'm a long time jeep owner, had about 10 different CJ's, Yj's and TJ's throughout the years but this is my first JK. Just purchased it a few weeks ago, and am working some problems out with it. It's a 2012 Sport with 190k miles on. Well maintained and not abused.
I'm hoping to get some help at this point with something weird going on with the gauges. I've spent hours and hours scouring all the forums and haven't been able to find anyone with a similar issue. Here is what's going on:
When I bought this JK, all the gauges worked fine. Then, about a week later, the tachometer stopped reading properly, about 500-900 RPM's low at all times. Then, a few days later, the speedometer went haywire. It started pointing straight down when the engine is off, then does move to the left when driving as it measures the speed. It does seem to be working, but the needle isn't matched with the right numbers and just points to the space at lower part of the gauge face. Then, finally, the gas gauge went. it was reading 3/4 of a tank when full, then, when I did an ECU reset with my OBD JScan, it went to showing full at all times. I did do the instrument cluster self test, and all the gauges show to be operative, but the needles for the tach, speedo, and gas are miscalibrated on their sweeps during the check, i.e. they don't sweep from beginning to end of the numbers on the gauges.
Here's an image of what's happening while driving, note the OBD Jscan TrailView to the right for actual road data.
![Speedometer Steering part Car Tachometer Gauge]()
I'm hoping to get some help at this point with something weird going on with the gauges. I've spent hours and hours scouring all the forums and haven't been able to find anyone with a similar issue. Here is what's going on:
When I bought this JK, all the gauges worked fine. Then, about a week later, the tachometer stopped reading properly, about 500-900 RPM's low at all times. Then, a few days later, the speedometer went haywire. It started pointing straight down when the engine is off, then does move to the left when driving as it measures the speed. It does seem to be working, but the needle isn't matched with the right numbers and just points to the space at lower part of the gauge face. Then, finally, the gas gauge went. it was reading 3/4 of a tank when full, then, when I did an ECU reset with my OBD JScan, it went to showing full at all times. I did do the instrument cluster self test, and all the gauges show to be operative, but the needles for the tach, speedo, and gas are miscalibrated on their sweeps during the check, i.e. they don't sweep from beginning to end of the numbers on the gauges.
Here's an image of what's happening while driving, note the OBD Jscan TrailView to the right for actual road data.
