I have a 2003 saturn L200,A/c blower was not working, messed with it a bit and put it on heat then it started working and blowing out air but only warm air even on cold setting with a/c button pushed in. The large fan in the engine also went out and is not working,and the clutch assembly on the compresser is not rotating either, but the car in general seems to be running and driving fine. all fuses checked out good. any ideas what this problem can be? or what to check next?

Heater Blower Motor Troubleshooting

There is a relay that powers the blower motor circuit . Left I/P fuse box , do you know where that is ? The relay is IGN 3 relay .
Fuse Block- I/P - Left
LF of the passenger compartment, behind the kick panel
IGN 3 RELAY
--
IGN3, HVAC CNTRL MODULE
IGN 3
10A
HVAC CNTRL MODULE, TC SW., HTD SEAT SW.
Does your car have Manual or automatic climate control ?

You need to fix the coolant leak, then refill and bleed cooling system, then you will get heat and cure overheating problem too

Replace the blower. When you turn it shifts the motor in it case. Over heats and dies.

Blend door actuator is deep under the dash and hard to get to. If you really want to try to fix it yourself, buy a shop manual.

If it happened all of a sudden, check the fan belt, and the A/C fuse. These are the most likely culprits. If the fuse is blown, the clutch on the A/C compressor may have gone bad, and should be looked at.

look for a bad blower resister,it is mounted in the blower box,or a bad ground

check cooling fan operation while ac on.If fan is working proper,will probably have stuck exspantion valve.

1999 saturn the ac is no longer blowing air at all no heat no cold air you can hear it turn on but nothing. What do I need to look for?

Had the same problem on 2001 L200 and ran across this answer on another blog. ***Also warnings about dangers of working around air bags***

Pulled the plastic frame from around the radio.
Removed radio.

Behind radio is a large male,female connector feeding wires to the heater blower.

The wires were discolored from heat and blower would kick on when wiggled.At which point I could feel the discolored wires heat up.

Disconnected the connector and could see where it was burnt.

Cut the affected wires going into and out of the connector and jumped them with comparable sized wires and quick connects from Autozone.

Caution not to cut off more wire than needed (wire stripper tool was very handy) work space was tight. ***Disconnected the battery before making the repair ***