No hot air.

Burrelly · 01-04-13, 11:15 AM

I am having an issue again.... Seems to have plenty of them...

Basically I am only getting cold air from my heaters regardless of the setting.

The coolant level seems fine. Both water pipes going in and out the engine get warm is that normal?

Any ideas what to look for?

Cheers
Dave

peterzs · 01-04-13, 11:18 AM

See its a 120, have you bled it recently, or topped up coolant.

Have to bleed it with the heater on hot.

Sounds like an air lock in the heater matrix.

Think Dan found a steep hill to help when he bled his ZT.

Burrelly · 01-04-13, 11:23 AM

Where is the bleed nut? had a look but struggled to find it.

Basically run the car with the heating up full and turn the bleed nut while topping up coolant?

Dan1971 · 01-04-13, 11:32 AM

Heater on my ZT-T V6 was blowing cold.

Found a hill and managed to find a bleed valve on the tubing and left it running with the coolant top off.

Lots of popping and hissing later it appeared sorted.

However - having traced the car since, it was one of the very very few V6s to suffer HGF shortly after, and I think my issues with the heater/coolant system and tubing were linked to that.

welshone · 01-04-13, 11:42 AM

Quote:

Originally Posted by Burrelly

Where is the bleed nut? had a look but struggled to find it.

Basically run the car with the heating up full and turn the bleed nut while topping up coolant?

Bleed screw in on a metal coolant pipe located in the red marked area.