Car temp rises when ac is on pt cruiser chrysler l4-2.4l ...

Q: Car temp rises when ac is on

asked by on June 19, 2017

My car was running great, even on hot days. Then one day I was going to work and it was 105 f outside and I got to work and I heard a lot of bubbles from the coolant overflow and it's caused coolant to flow out of the car. Filled it up next morning, let it bubble out and everything but same problem persists. The car goes over normal temp when ac is on sepciafally but not when the ac is off. And temp goes up a little faster especially when ac is on and idling. Changed the radiator, radiator cap month ago, thermostat 2 months ago , and it's all brand new coolant. The fans go on normally but they don't seem to help. Driving at night even when it's colder, same problem persists. Thank you and please help.

My car has 233000 miles.
My car has an automatic transmission.

Certain engine management issues, such as too lean operation, engine timing issues and so forth can contribute to overheating. The reason the overheating is occurring whenever the a/c is on is because a/c adds a load to the engine, making the engine work harder. Other things to check include partially collapsed hoses, partial blockages in cooling passageways and the water pump. Sometimes the water pump drive belt does not drive the pump at adequate speed or there could be a problem with the pump impeller. If you desire that this problem be diagnosed by a certified Mechanic, dispatched by YourMechanic right to your location, please request an engine overheating diagnostic and the responding certified mechanic will get this resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?
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

Get a quote

What others are asking

Shifting problem

What you are describing may be a result of a faulty speed sensor, potentially low transmission fluid or a even a faulty transmission control solenoid. As your vehicle travels down the road, the computer analyzes data being sent by vehicle...

Break problems

Hi there: Your boyfriend has a serious brake issue that should be repaired immediately. The loud noise is most likely coming from the brake pads grinding on the brake rotors. When he applies the parking brake, it's only applying pressure...

Why does my 2008 Toyota Tundra make a loud metal rattling noise whens started

Hi there. This noise can be caused by a few things. Most of the time it is caused by a loose heat shield on the exhaust. When this occurs you will hear the noise as the shield rattles and some...

Related articles

A Buyer’s Guide to the 2012 Chrysler 300
The The Chrysler 300 is a large luxury sedan that looks great, handles well, and has more power than many realize. Chrysler was once one of the biggest automakers in the world, and with this vehicle, they showed that they...
A Buyer’s Guide to the 2012 Dodge Ram
While While Chrysler has decided to give Ram its very own division, it seems impossible not to think of the Ram 1500 as a Dodge. After all, you’ll still buy your 2012 Ram at a Dodge dealer, and it remains...
How to Customize a Chrysler 300
The The Chrysler 300 is an extremely popular model of sedan with sleek styling reminiscent of more expensive brands like the Bentley at a far more affordable price. It’s a great long-distance cruiser with get-up-and-go, which inspires great loyalty to...