please help !! is there a bleeder valve ?

[rdodger]

i think i may have air in my coolant system , is there a bleeder valve to let it out ? if not how can it be done . thanx

[Banshee365]

No, let the truck idle a bit with the degas bottle cap off.

Why do you think you have air in your system?

[rdodger]

my heater has been blowing cool at idle then normal temp when accelereting . i replaced thermostat today and its still doing it. i put some coolant in my degas bootle then took it for a spin and the level went down till i opened the cap on degas and it bubble back up a bit .

[Banshee365]

If you had air it would be in the high spots in the cooling system. Have you been following the other heater issues going around lately? Alot of heater problems have started rearing their ugly heads with the colder weather coming.

If you have the dash mounted 4wd selector you could have a vacuum leak in one of your hubs. Some say bad head gaskets cause heat issues too but I'm not really up on the reason.

[rdodger]

ya i was just reading something on that issue , do you know of a way i could check vacuum line or where they are located . thanx for the help