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Technical => Electrical Tech => Topic started by: 88tbirdsport on November 14, 2016, 05:03:01 PM

Title: temp/oil/fuel gauge not working
Post by: 88tbirdsport on November 14, 2016, 05:03:01 PM
my ignition switch has been bad awhile and had to jiggle it to get the turn signals and heat to work so i figured that when i replaced it that my temp,oil, and fuel guages would work but they are not. anyideas what I need to do next to try and get them to work?

clip for switch had been hot and melted a bit
Title: temp/oil/fuel gauge not working
Post by: softtouch on November 14, 2016, 07:59:00 PM
If these are buttstuffog gauges, it could be a bad IVR.
Title: temp/oil/fuel gauge not working
Post by: jcassity on November 14, 2016, 09:54:35 PM
or a broken resistance wire that leads from the ignition switch and travels up to the cluster.

12v comes in one side and on the other its brought down to about 8vdc

it is a tiny gray wire
Title: temp/oil/fuel gauge not working
Post by: Haystack on November 15, 2016, 03:16:37 PM
This. I had an ignition switch that was brand new but kept getting hot. I have a picture somewhere of it reading high temps and full gas tank. I pulled over and cycled the key and it put temps at normal and gas at 1/4, where it should have been. Once I replaced the ignition switch pigtail it went back to normal. Before that the gas guage would randomly drop or say full. I knew when it was a flase reading because the same thing would happen with temps as well.
Title: temp/oil/fuel gauge not working
Post by: 88turbo on July 01, 2017, 05:32:27 PM
I'm having the same issue, did you ever find the cause of your issue?  With my issue, the gauges will sometimes work for a few seconds (long enough for the needle to rise) then they don't work at all.