So my heater isnt working good. I took my A/C off awhile back and the heater hasnt worked since. I left the AC lines open so the lines are just sitting there open. Could there be cold air getting in through those lines and making the the heater blow cold?

 

AC and heat are two separate things. Your heater core is probably clogged. Disconnect the 2 hoses that runs to the firewall/heater core and back to the water pump from the water pump, then using a low pressure water hose on one of those hoses flush it out.

 

I did what maverick is suggesting a couple weeks back and my heater has never blown so hot. I am in love with my car all over again.

 

Ok thanks guys. Also what size is the threads on the A/C lines so I can buy some caps to cap off the ends...

 

DO NOT remove the ac lines - only the coolant lines, these are 2 completely different lines/hoses, one carries coolant from the motor/water pump and the other carries refridgement/freon, if you open up the ac lines you have a mess - only the coolant lines

 

Ive already taken the AC off of my car. Now I just have open lines and was wanting to put something over them to cover them up to keep trash out. So what size are the threads on the line that go into the compressor?

 

wont a clogged heater core cause the car to overheat?

 

No. The heater circuit is just another route for coolant. It does not block function between the pump, engine and radiator.

 

x2

 

A clogged Heater Core can cause a Car to overheat.

Dan

 

No it won't. If you capped off the two heater hose connections at the WP, the engine would not overheat.

 

Anybody know the tread size on the ac lines so I can cap them off?

 

Ok flushed the heater core and heater works awesome now. Thanks for the help!
Also does anyone know the thread size on the A/C lines??