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i installed guages and my tranny temp is acting up it fluctuates from over 300 degrees to nothing. is this a bad probe? bad ground? taped into wrong wiere?
your tranny temp gauge should have it's own sensor, you can probe the wire and see if the value is fluctating, if it's not and the gauge is acting up at the time, then check your power & ground to the gauge. if those are good then it's your gauge being bad.