Our Favorite Online Repair Manual... Mitchell1

Car overheating and A/C not working at times.


 

Question: subaru shifterI notice that my car is low on coolant and at the same time my AC works at times. When i sit in traffic or sometime when i drive the gauge reaches almost to over heat and the A/C stops working, could that be because i am low of coolant?

Answer: The A/C and engine coolant systems are linked by the radiator and condensor which both sit in front of the engine and are cooled by a fan. If there is a problem with the fan, your engine will tend to overheat when in traffic (low speed) but temps should go down when at highway speeds. If the condensor does not receive adequate airflow the A/C system will not operate properly as well. Depending on your car, you may have a mechanical fan or electric. A mechanic should be able to diagnose.

As to the coolant issue, low coolant can cause overheating, but more than likely if you are reading the coolant level from the overflow tank, it’s due to the overheating (water expands as it’s heated) issue and excess water is being dumped when the engine overheats. Then when the engine cools off, the level drops in the overflow tank and it appears you are low on coolant. The above information is my “best guess” given the information you provided, and knowing you are having these two issues happening at the same time. With any engine overheat issue there are other basic things a mechanic will check like water pump seal leakage, radiator cap and restrictions in the radiator itself due to leaves and debris.

Before you click out! While I know a lot about cars, I don't know a lot about YOUR CAR! A repair manual is essential and I have a way for you to get one FREE.

Click Here To Read More
(Link opens in a new window)






Learn more with our Autoshop101 courses.


Posted: 1st June 2015  |  Author: Kevin Schappell  |  Category: Cooling, Heat & AC

Leave a Reply

You must be logged in to post a comment.

About This Blog

AutoEducation.com has been around since 1999 educating you on how cars work.

Solid advice, a little bit of fun, and even answers to your specific questions keep customers coming back. We want to help make owning a car as easy as possible for you and your family. Americans love their cars, and we are here to help you get the most out of that experience! The blog is an agile way we can respond to visitors and answer questions or post the news of the day.

Want to take your education to the next level?

Sometimes you have to get "hands-on" and there is no better place than a trade school. If you are looking for a new career, or simply just want to learn to do repairs on your own car, we can help.

We have a directory of all the trade schools, vo-tech schools and automotive colleges in the USA. Get the best education for your need, at night or full-time.

Click Here to Find an Automotive School...

We Recommend...

Online Auto Repair Information for the Do-it-Yourselfer