Skip the auto shop - Our mechanics make house calls

Q: Truck slowly overheats with AC on and not moving

asked by on

Truck slowly starts to overhear when it is stationary for a few minutes and with the AC on. Does not overheat at all with AC on and truck moving. Does not overheat at all with AC off and truck standing still.

Water pump and thermostat are good. How do I fix this please?

Thank you

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

Hi there:

In most circumstances when the vehicle overheats when the AC is on, it’s caused by a malfunction of one of the cooling fans. Most vehicles have two cooling fans on the radiator; one for cooling the vehicle normally, the other for when the AC come on. Check both cooling fans to see if they have power and are operational. If that doesn’t clear up your issue, contact a professional mechanic to [complete a car is overheating inspection] so they can determine why your 2006 Dodge pick-up is overheating.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
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

Q: Dome light turns on and off by itself while vehicle is turned off.

Hi there. Check the courtesy light switches on the doors to the vehicle. It seems that one or more switch may have a bad ground or a bad contact in the switch causing the courtesy light to come on while...

Q: Major electrical issue

Hi there. Unfortunately, there could be dozens of possible sources as to why this is happening to your Monte Carlo. I would recommend having a professional mechanic complete an electrical problems inspection at your location; to help pinpoint the source...

Q: Replaced my battery and replaced ends to the battery cables - does not want to start until I turn it over a few times - I think it my main cable.

Billing question sent to CS for the cost of replacing the positive (+) battery cable to a 1999 Dodge Ram 1500, along with the customer wanting to know where to go to install new seat belts.

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...