Hi,

I just did a H22 swap and I filled the system up with water/coolant mix and the car got upto operating temp "2 full bars-4th gen" and I'm pretty sure all the air is out of the system. BUT the air blows cold, I kept the heater on during the entire process. I noticed that the recirc button was on.

could the heater core get airlocked? any help on this thanks

 

also, is the USDM thermostat and JDM thermostat different?

We couldn't find one locally because the JDM one was much bigger than the ones sold locally

 

Did you hook up your heater hoses up and correctly?

 

is their an inlet and outlet on the heater core?

I suppose its possible that its hooked up wrong

 

anyone else?

 

Yeah make sure u hooked up the 2 hoses leading into the cabin correctly. Does the car ever overheat?

 

I double checked the hoses and they were hooked up correctly...so the heater started working today. Not sure why it didn't last night. All is good thanks for the help