Auto overheating/ slipping

**str405** · 3rd July 2017, 09:02 PM

Update! The d2 appears to be driving without any problems now and won't register that it's overheating.

I'm guessing that there was air in the coolant system and that sometimes this would pass over the temp sensor and cause it to return funny readings.

I'll still change the thermostat and temp sensor when I next get a chance to.

I'll repost to this thread if the symptoms return.

Many thanks to everyone for all their input! This is a fantastic webforum

**Pippin** · 18th July 2017, 11:34 AM

Originally Posted by Pippin

Not the same. You may remember one about 6 months ago which after a hose failure and repair ran well once and would not start the second time and threw up all sorts of error codes including CAN faults. I had a look and was puzzled and defeated due to lack of time (I never did find out the outcome). I wonder if there are ECU/BCU effects or damage from the fluid contamination as the one I mentioned was also running fine before the hose gave out.

Hi Sierrafery,

For your info.

Evidently the ECU had failed on this one and ran fine when replaced. Maybe it's worth taking care when pressure cleaning ATF from a burst hose by disconnecting the battery and cleaning all the connectors with switch cleaner and letting it all dry out before restart.

Nick

**str405** · 21st July 2017, 05:27 PM

Update - over the past month or so the discovery has been behaving well apart from a slow loss of coolant. Have had to use approx 5 litres plus over the course of 4 weeks or so or about 1500km. It seems to be worse after a long highway drive.

Today spotted first sign of an external leak, best I could tell was that the highest wet spot was the bottom right corner of the radiator as you look at it from the front of the vehicle. Will get a better look tomorrow but I assume the leak is getting worse if showing obvious external signs now.

**Pedro_The_Swift** · 22nd July 2017, 08:44 AM

This from RAVE,,
shouldnt be any hoses around there,,

TD5 rad.jpg

**str405** · 23rd July 2017, 08:02 PM

Looks like there has been an attempted on-the-run repair job of the lower right corner of the radiator as it is covered in silicon. The highest wet patch is here on the rear side, pooling on the chassis.

Are these radiators known to crack?

I'm guessing a new radiator is on the cards. I have photos of the spot that I'd like to post but can't work out how to upload them!

**Pedro_The_Swift** · 24th July 2017, 06:59 AM

one way is--

reply to thread,
manage attachments,
add files,
browse and upload,
insert line
done.

quick hey!

**str405** · 24th July 2017, 06:00 PM

Got it! I was on the mobile site and not the full site...

photo appears upside-down, can't seem to flip it :/

photo shows the rear of the radiator, bottom left hand corner where the silicon seems to have been smeared. Photo was taken from the left wheel arch after removing access hatch.