Plugged Heater Core?

[CSR44]

I have read the threads and I was wondering if this is also a plugged heater core: Temp level good, coolant level normal, new t-stat, very faint warm air coming out. If I rev the motor, I can hear the heater core "girgle" and the air gets hot, soon as I back the throttle back down to idle, cold air?

I think I will try the Superflush kit for the heck of it.

Thanks,
CSR

[tom3]

Sure sounds like air in the system to me. Be sure to actually take off the radiator cap and check level.

[CSR44]

Yes, I made sure both levels were good. I also felt the hoses and they feel the same temp. I am going to try taking the hose of the core and back flush with h20 while I have em off. I thought the core was air locked so I parked the nose on a steep hill and took the cap off, no results?

[Fractured1]

still sounds like you might be moving some air around..and for the cost I would replace the radiator cap...