A4 1.9 PD TDI 130 loosing coolant

[Jacko1]

Hello ,

A4 1.9 PD TDI 130 loosing coolant , no obvious external leaks from hoses etc , no mayo in the oil -
strange additional symptom is that internal cabin vents red hot on passenger side and cold on driver side when calling for cabin cooling.

Possibly a blockage somewhere ? water pump failure ? should I start with a sniff test ?

Anyone have any ideas?

 

[Asahi]

Hello ,

A4 1.9 PD TDI 130 loosing coolant , no obvious external leaks from hoses etc , no mayo in the oil -
strange additional symptom is that internal cabin vents red hot on passenger side and cold on driver side when calling for cabin cooling.

Possibly a blockage somewhere ? water pump failure ? should I start with a sniff test ?

Anyone have any ideas?

Have you checked the flange at the rear of the engine? I was losing coolant at one point and it turned out to have a hairline crack in it as it's plastic