Q: Heater blower

asked by on January 16, 2017

Heater blower either quits working or blows continuously until fuse is pulled. The module has been replaced twice, resistor pack and blower motor replaced once and all in 3 years. Also, sometimes sounds like turn signal is on when it isn't. Don't know if that pertains to the problem or not. All fuses checked by dealer as well. Any clues to what would cause this to keep happening? Could there be a possible short in the ground wire? If so, where?

My car has 130000 miles.
My car has an automatic transmission.

Electrical components are not working Inspection $79.99 - $89.99 Get a Quote

If the blower motor does not respond to on and off commands at the switch, generally the switch is faulty. The turn signal issue is probably not related to the problem with the blower. If you hear the flashing unit operating (uncommanded) and/or there is a visual indication that the turn signals are operating (again, uncommanded), that could signify a problem with the column mounted turn signal switch (or combination switch). If you desire that these electrical problems be diagnosed by a certified Mechanic, dispatched by YourMechanic right to your location, please request an electrical component diagnostic and the responding mechanic will get this resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

Car won't go into gear

Do you have a manual or automatic? On either, if a cable is broken, it needs replaced. On a manual car, a defective clutch master cylinder, slave cylinder, or worn clutch can make it difficult to go in gear. For...

windshield wipers won't shut off

If the wipers are still functioning even after you have used the switch to command them off, that means the switch supplying power is fused shut and/or the circuit is being powered when it is not supposed to be due...

Car doesn't run right - 2005 Chevrolet Impala

Hello and thank you for contacting YourMechanic. You will need the check the idle air control valve (IAC). It is located just under the throttle body where the throttle plate is. Unplug the harness and check the plug for any...

Heads warped

Hi there. A stuck thermostat will definitely cause your engine to overheat. When your heads warp because of this, it is necessary to take it to an engine machining shop in order for them to attempt to straighten out the...

p241a read on scanner.

Hi there. Check the plugs on the O2 sensors and see if they are swapped. This will cause the fault code to come on. If the wiring is correct, then the wiring could have a break in it on the...

My 2004 Buick Rendezvous Service Engine Soon light is on. What does this mean

the check engine light comes on for the computer sensed a problem in the systems that it monitored. There can be many different reasons for it to come on from a loose gas cap to sensor failures. You will need...

transmission shifting harsh and/or delayed

The rpm's "skyrocket" is normally an indication of substantial clutch wear within the transmission. Considering the 313,000 miles, this is most likely the case. If the fluid & filter replacement didn't make any change in performance, you should take...

Transmission stopped forward backward

Hello. There could be an electrical problem with the transmission. Some of the wiring to the transmission could have been damaged from road debris or the computer for the transmission has failed. There may also be some internal parts of...

Cooling fan not coming on

Most of the time when the fan stops coming on it is caused by a fan failure. If the fan stops working it means that either the motor in the fan failed or it blew a fuse. If it blew...

Related articles

How to Replace a Rear Window Defogger Switch
The rear window has a defogger switch that fails if the button does not light up, the rear window does not defog, or the switch does not always work.
How to Replace a Fuel Pump Shut Off Switch
The fuel pump shut off switch may be faulty when the Check Engine Light comes on or if the engine suddenly turns off while driving.
How Are Car Wires Protected From Damage?
The highest tech cars can contain miles of electrical wiring. Wires must be secured and protected from heat and debris in order to work properly.