Skip the auto shop - Our mechanics make house calls

Q: car overheating and heater blowing cold air plus hose to heater core not getting hot

asked by on

So the car started overheating and the heater isn't blowing hot just cold. Don't think coolent is circulating because the hose isn't getting warm. Already replaced water pump and head gasket. Replaced thermostat too. Coolent reservoir is boiling as well

My car has 170000 miles.
My car has an automatic transmission.

A: If you replaced all those parts and it stil...

If you replaced all those parts and it still is overheating then you have a radiator that is clogged and/or the fan is not working. You need to see if the upper and lower hose is hot when the vehicle heats up. If this is the case then replace the radiator and check the fan operation to make sure it is working.

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: Coolant

Hi there. Thanks for writing in about the coolant issue with your 2000 Olds Alero. Coolant or radiator fluid circulated from the radiator to a pump and through the engine block to maintain a consistent temperature. The first thing you...

Q: added power steering fluid then noticed it was for Honda/acura

Hello. Thank you for writing in. Honda's power steering fluid should not be used in your GM vehicle. While they keep the major details of the chemical make up relatively hard to find, they make it clear the fluid is...

Q: Should I have a massive cooling system replacement done?

To answer your last question first, if the truck is "overheating", you can't drive it at all, not even to a repair facility. Overheating, if severe enough, has the effect of warping the cylinder heads, block, and manifolds. Even if...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.