Question about 1993 Chevrolet Cavalier

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Air conditioner light stays on and i can't get the heater to work

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Could be a relay or the switch on the dash.
For now you could disconnect the compressor and see if the heater hoses are getting hot.

Posted on Dec 11, 2012

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You may need a new re-o-stat, or you need to bleed air from the heater core.

Posted on Dec 11, 2012


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Love mine too. I had the same prob with the a/c...found a fix online where you take the switch panel out, take it apart, clean the contacts with alcohol and then write on them with a #2 pencil (coat them with the lead) and then reassemble and it worked like a charm for me. Mine started to do it again this year, but it at the end of summer and I didn't get around to doing it again, but will before I need the a/c again. And time again for front brakes and rotors for me! 85k and going strong!

Posted on Dec 12, 2009

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1 Answer

2003 Nissan Altima Heater problem

car heaters work by recirculating the heat from the engine coolant, this problem sound to me like you have a faulty heater matrix, these are generally a pig to get to and even more of a pig to remove/replace & involves a lot of stripping out of the dash, if you really want to do it here are the instructions on how to do so......

  1. Removal
    • 1

      Make sure the Nissan Altima's front wheels are in the straight-ahead position. With the ignition off, disconnect both battery cables, starting with the negative. Wait at least 10 minutes for the air bag's energy to deplete before continuing.

    • 2

      Detach the driver side air bag and steering wheel. Disconnect the air bag module connector and horn electrical connector from inside the wheel's lids. Use a T150 wrench to remove the bolts Store the air bag module face up.

    • 3

      Take out the passenger side air bag. Remove the glove box to reach the module connector.

    • 4

      Jack up the Nissan Altima and securely place it on jack stands. Place a clean container directly underneath the drain plug located on the bottom of the radiator on the passenger side. Carefully remove the drain plug and drain the engine coolant from the cooling system. Put the drain plug back in place and set the coolant aside.

    • 5

      Discharge air conditioner refrigerant. If your car used R-12 refrigerant, it's against the law for you to discharge or recharge the system unless you're an EPA-certified technician, so you may need a professional to do this part. Disconnect the heater hoses from the heater core tubes from within the engine compartment.

    • 6

      Remove the instrument panel from the car. Remove the lower panels first starting on the driver side. Removal includes all the screws and connectors, the audio/deck pocket, switch panel, center console, grilles, pillar garnish, instrument stay and steering member. You may need assistance taking the panel out.

    • 7

      Disconnect the air conditioning housing by taking off the refrigerant lines and thermo control amp. Remove the heater unit from the car and the heater core from the unit.

    • 8

      Install the replacement heater core to the heater unit. Replace the heater unit and air conditioning housing within the car, reconnecting all the lines.

    • 9

      Reinstall the instrument panel, including the steering member, instrument stay assembly, pillar garnish, grilles, center console, switch panel and audio/deck pocket.

    • 10

      Reconnect the heater hoses to the tubes. Connect the steering wheel, both airbags and the glove box back onto the car.

    • 11

      Fill the cooling system. Use new coolant, if you're not certain the old liquid is still good. Recharge the air conditioning refrigerant (unless it requires an EPA-certified technician). Reconnect both battery cables, starting with the positive one.

    • 12

      Run the Altima's engine to its normal operating temperature. Check the climate control operation and inspect the system for leaks.

      If you do not want to go through this hassle you have two other options:

      Option 1 pay for a mechanic to do all of the above.


      Option 2 buy yourself a 12v plug in ceramic heater or two, one you could keep on the dash for screen clearing duties & another you could keep near or on the center console for body warming duties!, best of luck & i hope this helps.

Sep 07, 2012 | 2003 Nissan Altima

1 Answer

Heater controls dont turn on

check all 20 amp and check the 10 amp fuse to heater and air conditioner control, problem could be in the heater and air conditioner control switch,let dealership check it out.

Sep 01, 2012 | Cars & Trucks

1 Answer

Heater / air conditioner fan control doesn't engage fan. Previously, it only worked in high speed.

I would replace the blower motor resistor first then see if that corrects this. The resistor is located next to the blower motor under the dash.

Jul 16, 2012 | Cars & Trucks

1 Answer

Nissan maxima 1996

moz-screenshot.png#1-10 amp
SRS (Aribag)
#2-15 Amp
Air conditioner
#3-15 Amp
Air Conditioner
#4-7.5 Amp
#5-Tail LIght, Turn Signal Switch
#6-15 Amp
#7-10 Amp
Power Mirror, Mirror Heaters
#8-10 Amp
#9-10 Amp
#10-15 Amp
Power Windows
#11-10 Amp
Turn Signal
#12-7.5 Amp
Power Windo, Door Locks, Sunroof, Time control unit
#13-10 Amp
Meter, ABS, ASCD, Back-up Lights, Air bag, Warning Chime
#14-7.5 Amp
Corner, Turn
#15-10 Amp
#16-7.5 Amp
#17-10 Amp
A/C, Fuel Pump, Canister, EGR, Cooling Fan, ASCD
#18-7.5 Amp
#19-7.5 Amp
Wiper Motor
#20-20 Amp
Wiper washer timer
#21-10 Amp
Horn, Audio, Power Antenna
#22-15 Amp
#23-10 Amp
#24-10 Amp
#25-15 Amp
#26-7.5 Amp
Step/L, Room
#27-10 Amp
#28-7.5 Amp
#29-7.5 Amp
Heated Seats
#30-20 Amp
#31-10 Amp
#32-15 Amp
Fuel Pump
#33-10 Amp
Theft Warning System
#34-10 Amp
Fuel, RO2H
#35-15 Amp
#36-7.5 Amp
#37-10 Amp
#38-7.5 Amp
Rear Defogger
#39-7.5 Amp
Rear Defogger
#40-20 Amp
Door Lock, Horn, Multi, SRS, Power Antenna, Timer

Aug 01, 2009 | 1996 Nissan Maxima

1 Answer

Heater stays at max temp, air conditioner hot except on max cool.

it sound like one of the flap in the duck work is not working. check your heat contrell unit in the dash

Mar 22, 2009 | 1998 Mercury Mountaineer

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