Thread: My d2a towing coolant tempt

Sounds a bit on the cool side to me.

cheers

Steve

I second that, I'd be checking if the sender is faulty first, if that's ok then the thermostat.
The sender can be checked against the one in the fpr.

Cheers
James

It doesnt sound right at all to me, the optimal running temp is around 88-90*C for a Td5, lower ECT readings would increase fuelling. Aircon has nothing to do with that, check the fuel temp reading too next time, it should be around 10-15*C lower than the ECT. Yur thermostat might be stuck open... and even then it's a bit low especially with trailer

My D2 TD5 EU3 auto nearly always runs at between 82 and 85 C at those temperatures of around 20C.. Measured with a dry sensor located next to the ECU sensor and calibration checked against the ECU sensor using a Nanocom. Largest difference was about 0.2C.

Towing in 32C last week it ran at 85C on the flat and reached a max of 94 on a long climb at 115Kmh.

The thermostat starts to open at 82c and is fully open at 88C.

Mine has done this with an old thermostat and a new one .

I would suggest that under 82C suggests a leak in the thermostat , however under cruise conditions 82C-85C up is acceptable.
Regards PhilipA

Here is the shot with 1.2T trailer alone, I stopped to take a photo asap so the tempt would not change.

Something seriously wrong with those readings especially the IAT reading of 67C for that to be accurate it would have to be 60C+ ambiant temp outside the car.

Originally Posted by maxperformance

Here is the shot with 1.2T trailer alone, I stopped to take a photo asap so the tempt would not change.

The IAT is fine, that's in the inlet manifold, looking at that display, if it's correct, I'd say your ECT sender is kaput.

Cheers
James

Originally Posted by shack

The IAT is fine, that's in the inlet manifold, looking at that display, if it's correct, I'd say your ECT sender is kaput.

Cheers
James

X2 , or the reader isn't reading correctly , it can't spell manifold either