97 International vent air update

764614

{"replyTo":"

147103 发表于 2020-10-05 17:18:02 My heater core would stop up with dirt. I would use air to clean it out

","text":"I'll have to get my heater core changed and see how it does. I tried blowing it out and did get a bunch of dirt, but think it's been neglected. Guy I bought the truck from seemed to only maintain the engine.","replyToPid":401152}

764614

{"replyTo":"

1012464 发表于 2020-10-05 20:02:29 only when setting is on heat would a plugged heater core be an issue. if put on a/c it closes the door and air flow through heater core and then the air flow will be just through evaporator.

","text":"No this system blows through evap and goes through and around heater unless you switch to heat, then a side flap door closes so it goes through evap then through just core. Summer time you have to turn water valves off to the core.","replyToPid":401160}