Firebird21

I’ve had this problem for the last month. It started out by pegging the temp gauge and the classic warning coming on the dash. Then the gauge just started dropping to zero and finally just staying at zero with the “engine hot” warning still showing up even at a cold start-up. Warm starts were becoming difficult, the cooling fans were on high at all times, gas mileage dropped, and it would not idle well as a result of the false information from the sensor. The scan tool was reading 302 even though the temperature gage was at 0. I found that the main harness was pierced by a stud on the driver side valve cover and had severed the yellow wire for the temp sensor in that harness. This short also fried the brand new temp sensor I had put in earlier in a failed attempt to try and solve the problem. I fixed the wire and put the old temp sensor back in and so far it’s working fine.