Q: A/C intermintent blows hot air.
Starts out blowing cold and some time later starts blowing hot air. Acts like the blend doors are getting changed for some reason. Diags show no fault codes.
My car has 150000 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
What others are asking
When I go to crank my car the key stays in the start position and the car is constantly trying to crank itself.
First, let's make sure about some terminology before I proceed. I will assume the motor is actually turning over. If the car is trying to start, the motor has to be turning over or it is not trying to start....
Car bucks when I put it in reverse and drive.
Check your idle speed. If your vehicle is idling too high, it will buck when you engage the transmission. Your idle speed in park should be around 500-600 RPM's. If you are noticing the RPMs to be higher that usual,...
Oil leak and shaking
The oil filter (https://www.yourmechanic.com/parts/oil-filter), filter housing (https://www.yourmechanic.com/services/oil-filter-housing-gasket-replacement), and the oil pressure switch (https://www.yourmechanic.com/services/oil-pressure-sensor-replacement) is on the left or drivers side of the motor. The shaking can be from a problem with the camshaft's tensioner and guides. If the oil leak...
engine rebuild
Hi there. Our "How to" articles (https://www.yourmechanic.com/article/how-to-rebuild-a-car-engine) are written as usually general guidelines - not specific instructions that apply to a particular vehicle. We don't specify the precise steps for completing any repair because the reality is that every vehicle...
2014 jeep patriot ETC light comes on 1st and flashes then few secs later vehicle stablility comes on....what could it be? Thank y
Hello. Thanks for writing in. The warning lights may be related via computer and it's input sensors. However it is hard to tell without having the vehicle scanned. You will want to start there. Make sure the lights have illuminated,...
Car left two days didn't start third day, lights go on, no start up. AAA battery charger started car.
Hello. It sounds like you have a battery issue. If the jump starting got the vehicle going then that means that the battery alone could not produce enough power to start the vehicle. If the battery is low enough it...
Broke something replacing the water pump pulley. 1998 Cadillac Deville
Claimed by Kevin Gainer
Taking off my rear axle 2012 Nissan Rogue AWD
Hi there. If you haven't completed this type of repair before on this vehicle, I would recommend having a professional mechanic complete your rear axle shaft replacement (https://www.yourmechanic.com/services/axle-cv-shaft-assembly-replacement) for you, as it can be rather tricky. If you want to...
My 1998 dodge ram 1500 dos not want to go. And once u get to 40 mph it starts jumping..
Among common possibilities for loss of power are plugged fuel injectors (remove all from fuel rail and send to a lab such as Mr. Injector - don't waste your time with so-called "on car cleaning"), throttle body faults (electronic throttle...
Related articles
How Much Power Does the AC Draw From the Engine?
Most cars these days come with air conditioning as a standard feature – gone are the days...
Symptoms of a Bad or Failing Blower Motor Switch
If your blower motor switch only works on certain settings, gets stuck, or has a broken knob, you may need to replace your blower motor switch.
How to Replace a Car Air Conditioning (AC) Compressor
If the AC compressor fails, it can cause the air conditioning system not to work. This article covers how to locate, remove, and install a compressor.
Browse other content
Cities
Maintenance
Services