blower

sportsmom · #1 08-26-2005, 06:11 AM

help!

my sons air conditioner wasnt working so a friend of mine said he would take a look, well to my suprise the blower also stopped working i know it was working a few months ago someone told me about a switch can you tell me more about it and where it is located?

crazyinkc · #2 08-26-2005, 07:53 AM

The fan switch comes apart on the Metro alot. I use zip ties to fix them. The switch is all plastic and the top pops loose causing the internals to loose contact. The A/C circuit feeds through the fan switch so when the fan is off the A/C circuit is off.

sportsmom · #3 08-26-2005, 12:51 PM

Quote:

Originally Posted by crazyinkc

The fan switch comes apart on the Metro alot. I use zip ties to fix them. The switch is all plastic and the top pops loose causing the internals to loose contact. The A/C circuit feeds through the fan switch so when the fan is off the A/C circuit is off.

so will the blower on the heat not work either and where is it located at?

crazyinkc · #4 08-26-2005, 07:17 PM

The blower for the heater and A/C are one in the same. The one and only blower sits below the glove box. The system works by blowing air through the evaporator into the heater core, then out. When you have the air on, the control valve to the heater core is closed. This allows the cold air from the evaporator to travel through the hearter core and out. If you already knew this, ignore my babble, if not I hope it helps.

sportsmom · #5 08-29-2005, 08:38 AM

Quote:

Originally Posted by crazyinkc

The blower for the heater and A/C are one in the same. The one and only blower sits below the glove box. The system works by blowing air through the evaporator into the heater core, then out. When you have the air on, the control valve to the heater core is closed. This allows the cold air from the evaporator to travel through the hearter core and out. If you already knew this, ignore my babble, if not I hope it helps.

where is the switch lcated at?

crazyinkc · #6 08-29-2005, 09:53 AM

The switch is what you slide to adjust your fan speed. You will need to remove the 4 knobs and the 2 screws that hold the face of the HVAC controls. The switch is on the top right.

sportsmom · #7 08-31-2005, 09:26 AM

ithanks i will try this if it is not loose what would be the next step?

crazyinkc · #8 08-31-2005, 11:16 AM

There are pressure switches in the A/C system. A high pressure and low pressure but if the blower does not work and the A/C switch does not light up when pressed, the system won't work anyway. You need to get the blower working before we get to the pressure switches. The blower switch may be the whole problem.

sportsmom · #9 08-31-2005, 11:23 AM

Quote:

Originally Posted by crazyinkc

There are pressure switches in the A/C system. A high pressure and low pressure but if the blower does not work and the A/C switch does not light up when pressed, the system won't work anyway. You need to get the blower working before we get to the pressure switches. The blower switch may be the whole problem.

no the light doesnt come on it use to but now it doesnt we bought the car used in may and i tried dthe air and it blew out cold and blew out hot when i checked the heat (i think it was really just the outside air blowing when i checked the air) but the light came on then it got real hot and it never blew out cold air only hot but it blew air then i was at a friends who said sometimes the switches go bad turn it on so i can see if the compressor even comes on and when we did no blower at all to my suprise we dont know the history of the car other than bought from original owner got rid of had family to small its a lsi 1998 i will look this weeken to see if they are disconnected do i have to remove the whole dash or just thoes 4 screws you mentioned? thanks so much for your time

crazyinkc · #10 08-31-2005, 01:46 PM

If the blower was working before your friend looked at the A/C you might want to check the fuses first to see if one is blown. I should have thought of that before, sorry. It could be that in the process of troubleshooting the A/C problem, he/she inadvertantly shorted something to ground blowing the fuse which runs the whole blower/ A/C circuit. I do not have a manual with me here at work so you may need to just look at them all and see if any are blown. I think it was a 20A (yellow) fuse. The fuse box is located under the dash on the drivers side left of the steering wheel.

sportsmom · #11 08-31-2005, 02:04 PM

Quote:

Originally Posted by crazyinkc

If the blower was working before your friend looked at the A/C you might want to check the fuses first to see if one is blown. I should have thought of that before, sorry. It could be that in the process of troubleshooting the A/C problem, he/she inadvertantly shorted something to ground blowing the fuse which runs the whole blower/ A/C circuit. I do not have a manual with me here at work so you may need to just look at them all and see if any are blown. I think it was a 20A (yellow) fuse. The fuse box is located under the dash on the drivers side left of the steering wheel.

my sons friend in in auto at school he loked at it says its ok maybe i should look at it myself also do the relays under the hood play a factor in this could one of them be bad?

crazyinkc · #12 08-31-2005, 02:24 PM

The relays control the fans and A/C clutch. The blower has no relay, just a fused, switched lead from the ACC circuit.

sportsmom · #13 09-02-2005, 06:01 AM

Quote:

Originally Posted by sportsmom

my sons friend in in auto at school he loked at it says its ok maybe i should look at it myself also do the relays under the hood play a factor in this could one of them be bad?

thanks i went thru the glove box and it was loose from the back the blower is working fine still no cold air but thats next years problem

POST REPLY TO THIS THREAD