Hi I own a jaguar s type  2.5 by 55 plate had a coolant problem for while replaced all know parts and now found that the heater matrix is bubbling after turning car off was wondering if anyone has had similar problems and how hard is it to remove the unit many thanks any help would be much appreciated 

 

It sounds like there is air trapped in the matrix....is it blowing hot air?

 

I think you will find a lot of S Types “burble” from the dash even after the engine is switched off.

I am led to believe that it is the heater flap servo motors trying to find a resting place. May be worth investigating?

Regards Chris.

hi

is it using water, usually water coolants issues and bubbling can be head gasket

if its air locks, then you get a cold heater, does the radiator get hot at both sides

Id get a sniff test done to check head gaskets or even a compression test

cheers

Joe

8 hours ago, s3c chris said:

I think you will find a lot of S Types “burble” from the dash even after the engine is switched off.

I am led to believe that it is the heater flap servo motors trying to find a resting place. May be worth investigating?

Regards Chris.

My S Type used to do a bit of bubbling occasionally but it seems to have stopped. I have not had a spate of bubbling for the last three years.

Peter.