Heater fan switch works only on the highest setting?
The blower motor speed resistor is burned out. You can replace only the resistor but the resistor probably burned out because the blower motor is going bad. If you want to fix it for good, replace both the blower motor and blower motor speed resistor.
Why will the heater in a 1996 Grand Am with 4 pos heater switch not work on HIGH but it works in all 3 other positions?
What would cause the heater fan rear defroster to not work on a 1991 Chevy caprice the heater fan only works on the highest setting?
If the heater fan on your 1991 Caprice only works on "High" the problem is more than likely the resister assembly in your blower circuit or poor connections at the resister assembly. When the switch is in the "high" position the current does not flow through the resister assembly it flows directly to the coil of the blower relay. When the switch is in "low", "medium 1", or "medium 2" position the current flows through…
How do you replace light on heated seats switch on a 2000 Intrigue Light on switch for drivers seat OS out but light for passenger seat works?
If a 2000 Grand Am sometimes has the heater blower working and sometimes it won't, the problem could be with the heater relay switch. The heater relay switch lets the heater blower know when to come on and when to go off. In most vehicles this switch is behind the glove compartment. This part sometimes gets corroded from condensation in this area.
Have 2000 Nissan frontier blower for ac heat only works on highest setting what should you check for thanks?
How do you fix an air conditioner that only works on the highest setting in your 1997 Nissan Pathfiner?
Could be just the switch (the button you push). To check, pop the center portion of the coin holder between the driver and passenger side seat heater switches. On both opposing short sides of the switch there is a clip that need to be pried open to allow the switch off of the harness. Just swap the good switch over and if it works, order a new switch.
If my 1989 ford van has a new heater motor .new switch.I jump it from the battery to the heater motor blower it works fine otherwise nothing happens?
If your heater setting works, and your fan works, and you just don't get any heat... Maybe your heater core is clogged. With engine on, turn heater controls to full open/hot. Then turn off engine. Disconnect heater hoses under the hood. Connect a short hose to the "input port" to carry dirty water away from your engine. Connect another hose to the "output port." Shoot water from a hose-end sprayer into the "output" to backflush…
Heater blower wont work on 1996 rodeo blower motor works getting power to it but no ground cheched the heater control switch has ground coming to it but nothing else?
I have a 1996 406 GLX. Although both mirrors have heated symbols printed on them there is no switch as such like you would have for the rear window. This may be an addition on the Rapier and Executive models. The mirrors do defrost when the front screen heater is in use as hot air is diverted through the side of the dash. 2001 diesel estate HDI works when you switch rear screen heater on…
Depends on what you mean by heater will not work. If the blower motor will not work, it can be a blown fuse, bad blower motor, bad blower motor switch, or a defective blower motor resistor pack. If you mean that the blower motor works but there is no heat, then it can be a clogged heater core, thermostat stuck open, or defective heater control valve.
Your Pontiac Montana heater fan only works on 4 would it best to think you have a faulty resistor or a bad control switch?
My 1994 Mazda b2300 has only one setting for the heater motor when you turn on the heater motor the cold air works the hot air works but only seems to have 1 setting --what can cause this?
It sounds as if the "blower resistor" has failed. Not terribly uncommon, this device is usually mounted in the heater fan case (so it can be cooled by the blower airflow) and has several different resistors that lower the voltage to the blower motor, therefore slowing it down. My guess is that there is only high speed. They are not terribly expensive but can be somewhat problematic (on some models) to replace. Greg Skolnik email@example.com
Why dont my heater work in my 92 silverado the blower works great and heater core is hooked up but still no heat?
The heater core is probley stoped up. You can try this and it might work. Just switch the hose's on the heater core and then go drive it and see if you get heat. Just be sure engine is COLD before you switch the hose's. If that don't fix your heat, Then PLEASE ask your question again. When you get back from driving it let it cool back off and then put the hose's back…