09-13-2024, 10:16 AM
(09-12-2024, 08:28 PM)VulcanWerks Wrote: GTI is a good car!
The Corrado is fun. Very nimble. Not very fast my modern standards but you can smash that little VR6 around - great sounding engine too with straight pipes to a TT exhaust.
Heater core issues are the worst.
Not typically a super expensive part but a massive pain to get to.
Manufacturers also install them all sorts of different ways.
I had a 2002 Land Rover Disco 2 at one point. Super cool old British rig.
But, I was driving one day and heard what sounded like a waterfall when I accelerated. Turns out it’s a semi-common issue! As I can recall, the issue is most cars have coolant hose into the core is higher than the output hose (as in higher off the ground). This allows gravity to help “pull” the fluid down and thus reduces air bubbles in the system.
Land Rover did it backwards and pushes the fluid up through the heater core.
This makes them get air bubbles and the waterfall sound.
Solution?
Replace the core because even if you flush the system you will frequently still get bubbles.
Not the best design…
Older BMWs have similar issues with the cooling system. Need to be bled, bled, and bled again. Takes a couple weeks to get all the air bubbles out. Luckily, no heater core failures. Don't know about the new ones. It helps to put the front up on jack stands while filling.
