mbz03

Hi guys i try searching for this but didn't find any info i have a 03 c240 with 90,000 miles i just replace the waterpump and now theirs no heat i need some suggestions and help anything helps thanks

MW_ATL

I am thinking that I remember reading somewhere that if you don't bleed all the air out of it, an air-bubble can get trapped and keep you from getting heat. Maybe someone else can chime in and tell you how to make sure this doesn't happen?? Or...I could be completely wrong. Just a fuzzy memory that sort of makes sense.

Russell Ormerod

I assume you mean no Heaters?
yes try bleeding the system, airlocks will cause an issue

mbz03

Thanks guys how do i do that

Glyn M Ruck

Bleed & check that the auxilliary pump is working - mounted near the surge tank.