B16, B18, B20
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By luv-d-eh3
#338944 yesterday i installed a thermostat into my b18b hatch, it didnt have one before but the gauge would read normally after the car was on for a certain amount of time. last week i installed a fan switch because the previous owner bypassed it and i didnt want the fan on all the time. but after the fan switch installation the temp gauge has been jumping irratically. i thought installing a thermostat would solve the problem but it didnt so could it just be a broken cluster? also my speedometer is broken so maybe the cluster?
By bks84
#339010 you may have let air in the [coolant] system, try bleeding it.