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2:nd-Aug-2020, 16:18:15
Hi
I have a 14-plate 1.6 Astra Auto.
Recently got the "AC Off Due To High Engine Temp" warning, and an OBD II dongle said it was a P0128. At the same time the temp gauge went to minimum. Checked under the bonnet and the fan wasn't running even though we watched the coolant temp run up past 90C.
I'm no mechanic, but my local independent garage swapped out the engine temp sensor, topped up the coolant, cleared down the error code, and everything was back to normal. Indeed after driving home from the garage, the fan was running and the coolant was around 80C.
Two weeks later, and the warning has come on again, on the same journey at the same point (about 20 mins from cold). I doubt the new sensor (genuine Vauxhall part) has failed. One additional clue is that on both occasions, the car had been washed a few hours earlier, but I really doubt that it's water ingress causing the problem.
My guess is that may be there's a loose or damaged wire, and that replacing the stat was a temporary fix. The car has done less than 30,000 miles.
Any clues? Torn between taking it back to the local (friendly and very helpful) independent garage, or taking it to Vauxhall (which will be difficult as I am avoiding public transport due to the virus).
Thanks!
I have a 14-plate 1.6 Astra Auto.
Recently got the "AC Off Due To High Engine Temp" warning, and an OBD II dongle said it was a P0128. At the same time the temp gauge went to minimum. Checked under the bonnet and the fan wasn't running even though we watched the coolant temp run up past 90C.
I'm no mechanic, but my local independent garage swapped out the engine temp sensor, topped up the coolant, cleared down the error code, and everything was back to normal. Indeed after driving home from the garage, the fan was running and the coolant was around 80C.
Two weeks later, and the warning has come on again, on the same journey at the same point (about 20 mins from cold). I doubt the new sensor (genuine Vauxhall part) has failed. One additional clue is that on both occasions, the car had been washed a few hours earlier, but I really doubt that it's water ingress causing the problem.
My guess is that may be there's a loose or damaged wire, and that replacing the stat was a temporary fix. The car has done less than 30,000 miles.
Any clues? Torn between taking it back to the local (friendly and very helpful) independent garage, or taking it to Vauxhall (which will be difficult as I am avoiding public transport due to the virus).
Thanks!