"sloshing" sound from heater

[vince311]

I just installed a new motor in my 82 swb 2wd. It also has a new heater core. In my first couple test trips, I noted a "sloshing" sound coming from the heater. I did a quick Google search...and it would appear that low coolant level can cause this sound. Is that right? Anyone else ever have this issue?

[VileZambonie]

Sure, check the level in the radiator. Make sure the heater hoses don't sag excessively.

[Irish_Alley]

like vile said, also air in the core will cause this problem nothing hard to fix

[vince311]

like vile said, also air in the core will cause this problem nothing hard to fix

what is the best way to purge the air? Is this a matter of running the truck (in park) with the radiator cap off?

[enaberif]

like vile said, also air in the core will cause this problem nothing hard to fix

what is the best way to purge the air? Is this a matter of running the truck (in park) with the radiator cap off?

If you can.. lift the front end up a bit.. easier for the air to escape then run the truck with heat on full blast the air should escape and you can top off the fluid too.

[vince311]

fixed. ran a while with the cap off...made sure the fluid was near full. thanks guys