Q: When idling it over heats but when I press on the gas and bring the rmps up they suddenly drop and my car cools down?

asked by on March 11, 2017

When idling it over heats but when I press on the gas and bring the rmps up they suddenly drop and my car cools down also when it over heats my air goes hot to it has a new radiator and a new thermostat

My car has 173842 miles.
My car has an automatic transmission.

Car is overheating Inspection $79.99 - $99.99 Get a Quote

When you accelerate the engine, although you are adding heat, the water pump also spins faster increasing coolant flow through the engine and to the radiator. Perhaps there is an issue with the water pump and/or the water pump drive belt performing poorly at idle. If you do replace the water pump, use an OEM pump in case you have to perform further diagnostics on the overheating (aftermarket parts do not always work as well as OEM parts). The most common causes of overheating include low coolant level, a faulty thermostat, a plugged radiator, a faulty radiator pressure cap, collapsed hoses, non functioning cooling fans, and a faulty water pump or drive belt. Certain engine faults, such as a leaking head gasket or poor engine running condition can also cause overheating. 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.

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

When pressing the key the car lights all come on but the passenger door and the boot doesn't open

I have a 95 Nissan Truck, short bed XE, 2.4 liter, 2 wheel drive. About a year or more the check engine light came on. Code:43.

Hi Aaron. Thanks for contacting us today. A damaged throttle position sensor can cause a lot of issues, including the one you have mentioned. However, it's also possible that other, routine maintenance problems like clogged fuel injectors, dirty EGR valve,...

I have a ford Explorer 2002 it does not go when I put it drive now it will not go at all.

Unless there is an engine management fault (total loss of power), your issue has to do with the transmission. Check to be sure there is adequate transmission fluid as a low level can cause malfunctions. The possible causes of failure...

Driving below 30 mph, front wheels seem to wobble. New tires and rotated balanced.

You should have the front wheel bearings in the hubs checked for any looseness. This can cause wheel wobble. Also if the front axles are binding can cause the wobble.

I try to put my car into gear, but it won't allow me. I can put it into reverse & 3rd gear, but it grinds immediate as I do. 2000 Toyota Celica

Hi there - the brake and clutch hydraulics share the same fluid reservoir, so if the reservoir is at the correct level - low fluid is not your clutch problem. This could be a failure of the pilot bearing as...

Steering wheel has a lot of "play" or movement.

Hi there. The first thing you would need to do is perform a dry park steering test. Have someone get in the car and set the parking brake. Then have them start the engine and turn the steering wheel left...

All four brakes locking up after being driven for about 45 minutes

Hi there, if work was recently done on the master cylinder or brake booster, check to see if the brake push rod (manual or power assisted) has too little free play. If it is too tight, the master cylinder piston...

fan to a/c and heat vibrates (dash) and gets louder on level 3,4,5. Quiet on 1 and 2.

It sounds like you either have damage to the fan assembly, making it out of balance, or you may have some sort of object like a dead rodent, that is making the fan shake like an unbalanced tire. This will...

KOEO test code 332

Hello there, A few different things can cause insufficient EGR flow. The most likely are: a stuck closed EGR valve a failed EGR valve solenoid faulty oxygen sensor low fuel pressure exhaust leak These can also...

Related articles

The Best Used Cars to Buy for Teenagers
If If you’ve decided that you’re ready to purchase a used car for your teenager, then you’re probably pretty picky about what you’re looking for. Likely affordability, safety, and fuel economy are high on the list. With that said we’ve...
A Buyer’s Guide to the 2012 Hyundai Sonata Hybrid
When When Toyota first introduced the Prius, the idea seemed to be that all hybrids and electric cars had to have their own specific models and that they couldn’t look like normal cars. A lot of consumers weren’t too thrilled...
Symptoms of a Bad or Failing Coolant Reservoir
Common signs include needing to constantly add coolant, finding coolant leaks, and the engine overheating.