Okay I'm new to the forum and searched through it but have not found anyone else with this same problem on here. I recently did an engine swap and the old engine was having the same problem. But its still doing it with the new engine. Everything is working fine so far expect the temperature gauge.
What happens is I start the car and will have my scanner hooked up to monitor the temp. The gauge itself will start to rise as the engine warms up only its reading 160 when the scanner shows the computer reading 60 or so. Any way when we are all warmed up the scanner shows normal temp at idle like 195 and the gauge is reading in the red. The system has been bled and there is no air in it at all. The fans and everything work when it hits 215. I figured maybe the sensor was bad got a new one and same thing. I changed the wiring harness that clips onto the sensor and no change. The only thing i can think of is it has to be grounding out in that little green wire somewhere between the sensor and the gauge. I had a buddy from scrap yard bring another gauge cluster over and does the same thing on it as well. I guess my only other option is to either trace that wire down and rip the harness apart or just rerun a brand new wire from the sensor to the gauge.
Anyone else with suggestions or help would be appreciative.
Originally Posted by Scottydoggs
