Getting cold now and my heater in my 99 doesn't wanna blow hot air. Blower works just fine, just no HOT air. Any ideas?

I'm suspecting its your thermostat. Remove the 2 bolts from the housing where the upper radiator hose goes to. Inspect and replace your thermostat.


http://www.dsmregistry.com/detail.php?carid=1185

Mine went out last year, and I replaced my thermostat and it fixed it.
-Todd

Another vote for thermostat. Before you remove it, and while the engine is cold, remove your radiator cap and check the level of your antifreeze/coolant. It should be pretty much up to the bottom of the filler neck or so. If you can see the thermostat sticking up out of the coolant, you should pick up a jug of fresh stuff before you get started so you can top the system off.

I am having the same problem in my 96RS. I tried the thermostat, and still no luck, blows fine, AC works, but not the heat. Car heats fine and the system is pressurized, I cant find any leaks.
Any other ideas?

Sean

Originally posted by Sean_neo
I am having the same problem in my 96RS. I tried the thermostat, and still no luck, blows fine, AC works, but not the heat. Car heats fine and the system is pressurized, I cant find any leaks. Any other ideas? Sean

clogged heater core
or someone bypassed it.

Originally posted by mcgyvr
clogged heater core or someone bypassed it.

When I bought my RS new in 97 the heat did not work, I took it back to the dealer and they said a clip came off of the cable that that turned on the heat. Now my GSX blows heat all the time :shrug

When you take off the radiator cap, how close is the water to the top of the neck?

Originally posted by synthetek
When I bought my RS new in 97 the heat did not work, I took it back to the dealer and they said a clip came off of the cable that that turned on the heat. Now my GSX blows heat all the time :shrug

exact same thing happened to me. took apart my dash to redo some things, and i had no heat in the middle of a chicago winter! couldnt find the problem, and took it to the mechanic, clip came loose. he didnt charge.

Originally posted by SILVERNT

Originally posted by synthetek When I bought my RS new in 97 the heat did not work, I took it back to the dealer and they said a clip came off of the cable that that turned on the heat. Now my GSX blows heat all the time :shrug

exact same thing happened to me. took apart my dash to redo some things, and i had no heat in the middle of a chicago winter! couldnt find the problem, and took it to the mechanic, clip came loose. he didnt charge.

Thermostat was changed, and the coolent levels are fine.

No work has been done on the car to make the heat stop working, it just kinda stopped.

Where is this clip you guys are talking about? Should I try to flush the system to unclog the heater core or do I need to change it?