Q: My AC compressor doesn't work?

asked by on October 05, 2016

My truck only blows cold air when running in high speed but stops when going slow what could be wrong with it?

My car has 198000 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

Clutch shifts hard
Hello! From your description, it sounds as if you have a hydraulic issue. I suggest that a technician drive the vehicle to perform a clutch performance test. The clutch performance test will help indicate whether the clutch itself is faulty, or...
2003 Mini Cooper struggling getting into reverse, unles going into third gear first
It's pretty common with these Minis. You might have the shifter bushings checked. Maybe the bushings are starting to wear. But those Minis are not the greatest built vehicles. As they age, they get all kinds of problems. I would...
The ABS light, emergency brake light and traction control light are on along with the unresponsive speedometer
Failure of one or more of the wheel speed sensors (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-wheel-speed-sensor) will cause all of these conditions to happen all at once. The wheel speed sensors and the DSC control unit will need to be checked and fault codes read...
How do you get the purge solenoid hoses off
You will need a fuel line disconnect tool (http://amzn.to/28QodWV) on most models. Some models you have to squeeze the connector and pull it off. Depending on your connection you may need the special fuel line tool to have it removed....
My van was missing and rough idling then I turned it off one day and the next day it starts then dies and some times it won't start
Hello, thanks for writing in about your 2001 Dodge Caravan. For certain, given your mileage and codes for these 2 components, replacing these 2 sensors is the minimum. Cleaning the idle air control valve, throttle body (https://www.yourmechanic.com/services/clean-throttle-body), and PCV valve...
My coolant ran out when the vehicle sat for 2 years and I am scared to start it.
Hi there. Look in the engine compartment and locate the item that cracked to cause the coolant to leak out. If the radiator cracked, then replace the radiator (https://www.yourmechanic.com/services/radiator-replacement), fill up the cooling system with water, and look for leaks....
I spray painted my chrome wheels flat black a while back and now I want the paint off! Help?
Hi there. The best stuff to use to remove paint off chrome is Rust-Oleum Aircraft Remover (a paint remover for aircraft vehicles). The remover is very powerful, so you will want to cover the paint on your vehicle with cardboard...
Clicking sound when turning over.
This may be related to a faulty starter solenoid. The starter solenoid is located on the starter and has internal electrical contacts that transmit electricity to the starter. When this fails, it may cause a clicking sound and will not...
Engine knock
Hello. If the engine knock started after a few cold nights then it may be possible that it is related to the engine oil. Engine oil becomes thicker at lower temperatures, which makes it more difficult to pump for the...

Related articles

The Best Used Cars to Buy If You're a General Contractor
If If you're a general contractor, you probably aren’t in the market for a used car. More likely, you’re looking for a pickup truck, because you need to haul equipment and supplies to various job sites. Most contractors will likely...
Symptoms of a Bad or Failing AC Air Filter
Common signs of a clogged AC air filter include reduced airflow from AC vents, less power coming from the engine, and increased dust in the cabin.
Top Automotive News & Stories: October 1-7
BMW i5 images leak, an ultra-lux Jeep, hydrogen-fueled Colorado ZH2, Fisker's electric future, record plug-in sales, NHTSA Road to Zero, and more.