Q: Heater blows cool air instead of heat

asked by on January 13, 2017

Heater does not heat car. Heater blows out cool air only. When heater is first turned on, there is a rattle....after a few seconds the rattle goes away.

My car has 125000 miles.
My car has an automatic transmission.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Car overheated and leaked coolant.
While it is possible that a hose may need to be replaced, it may not be the root cause of your overheating concern. Does it overheat while driving on the highway at cruising speed or in stop and go traffic?...
How do I turn off the auto door lock?
The auto door lock feature automatically locks all of your doors, either when you shift out of P, or when you eclipse 10 mph. You can turn off this feature, in which case the doors will only lock when you...
Timing off
The pinion teeth of the starter motor engage with the teeth on the flex plate, and the starter motor cranks over the engine. I don't see how you could have messed up your timing during a starter replacement. But it...
Can one new tire with 3 worn tires cause the car to pull?
Any time there is an imbalance in the amount of tread, tire pressure, or an out of balance tire and wheel combination on any of the four tires, this will almost always cause the car to pull to one side...
How can I tell if my starter is going bad? 2008 BMW 528i
Hello - the slight delay in starter (https://www.yourmechanic.com/article/how-long-does-a-starter-last) function (and engine shut-down as well on some) for the "auto start sequence" seems to include a slight delay for most model vehicles with this feature. Whether this is an intentional delay...
Keyless entry is not staying programmed.
Hi there. Check the battery in the keyless entry key fob. Sounds like the battery is no longer holding a charge and needs replaced. When unplugging the battery cable to the vehicle, it resets the keyless entry programming to a...
New brake pads are making a repeating/clicking noise while in reverse.
The brake pads may not have been cleaned off good. The pads may need to be replaced if they got grease soaked. The brakes should be inspected for rotor burnish from the pads grease that was on the pads. You...
I have a 2001 Nissan Maxima and it cranks up all day but won't start up it'll start up sometimes and when it does it runs great
It may be that a component has gone tempermental on you. That happens with electronic stuff. The part will fail occasionally until one day it just doesn't work at all. You haven't said whether there is a check engine light...
Brakes not as responsive, must slam on breaks to stop, sponge pedal, slowed braking, replaced most parts already, can’t find leak
The problem you describe of low or no pedal after replacing the master cylinder is an indication of air is still in the system. You may have antilock brakes that needs to be bled out using a scanner that can...

Related articles

The Best Used Cars to Buy If You Get Motion Sickness
For For people that suffer from motion sickness, even on the shortest car trip, riding in a vehicle can prove to be unbearable. What’s great is that there are a number of cars on the market that can help to...
How to Get Buick Dealership Certified
GM/Buick car dealerships offer automotive technician jobs to mechanics who are certified through the Universal Technical Institute (UTI) and GM.
Understanding the Buick Oil Life System and Service Indicator Lights
Car symbols, or dashboard lights, are a car service reminder. The Buick Oil Life System indicates when and what service your car needs.