Thread: 2001 d2 Auto temp and 3 amigos observation.

That temp is low IMO, a Td5 is designed to run the best at around 90*C that's why the factory fitted thermostat starts opening only at 82 and it's fully opened at 96, running cold affects fuel consumption and increases the EGT which is not healthy on a long run, the coolant temp at least on mine can climb in 2 minutes with 10* under heavy throttle especially uphill and drop back fast to 90ish in normal conditions

if the 3 amigos reset all at the same time and the ABS doesnt stay on alone untill the vehicle exceeds 10km/h the most common issue is the well known SVS issue otherwise it's sensor or hub issue

Thanks my thoughts exactly on Temp. Will throw a new thermostat in and see how it goes.

My 2002 EU3 with lots of mods usually runs at 82-83C and down to say 79 downhill in cold weather say 15C . I replaced the thermostat about 4 years ago , but the temperature range does has not changed . I have a digital gauge with a dry sender next to the ECU sender on a bolt of the hose stub and covered completely with blu-tack.
I have tested it within 2c of the ECU sensor.

It rarely gets over 85-88 and has only once been at 100c on a 21Km climb towing my 1tonne camper from Tom Groggin to Thredbo ( The Alpine Way) which AFAIK is the longest steepest climb in OZ and about 2000-2500 metres..

My radiator is original also.LOL.

Diesels seem to produce very little heat when not worked hard so I wouldn't worry too much. The temp gauge goes to centre at 65C and that is when the lock up becomes available in the trans. So I think any cold start timing changes occur then also.
Regards Philip A

Originally Posted by PhilipA

....The temp gauge goes to centre at 65C and that is when the lock up becomes available in the trans....

It means that your additional gauge shows 5*C less at that point than the coolant temp sensor's input cos the gauge management protocol is made as the dash gauge to go to the middle at 70*C and stays there up to 119, these reading errors are usually percentual, that 65 reading at 70 ECT means that when you saw 100 on the gauge the ECT was around 108

No the 100C was on my Nanocom as my additional gauge sender wire had shorted on the rocker cover and was unserviceable. When I replaced it , I wrapped it in convoluted tube to prevent rubbing.

The Nanocom alarm went off at 100C which gave me a hell of a fright as I didn't know they did that in "instruments".

I checked my digital gauge against the Nanocom reading on several occasions and it was within 2C around the 80-85C mark.. The specs of the admittedly cheap Chinese gauge are +- 0.5% but they seem to be consistent. I have just replaced the gauge head with a spare as the existing gauge had a bad internal contact and read low until I snapped it with my fingernail. The new gauge seems to be the same as the old when correct.

Interestingly, some time ago I helped a bloke with my Nanocom and he had his sender at the back of the head and it also indicated about 6C cooler than the Nanocom, as with the OP.
Regards Philip A