Skip the auto shop - Our mechanics make house calls

Q: Heating/cooling system blowing cold/warm air when it should be warm/hot air

asked by on

System isn't blowing as hot as it should. So I blew out the heater core via from core hoses. Didn't help. So I replaced thermostat. Didn't help. What could be the issue, a bad heater core?

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

A: This suggests you may have a clogged heater...

This suggests you may have a clogged heater core. As you know, the heater core circulates warm coolant through it that is used to blow the warm air into the cab via the blower motor. The other possibility may be that the thermostat is not allowing the engine to reach normal operating temperature. I would recommend having an expert from YourMechanic come to your location to diagnose your heating system.

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: where is the thermostat

Your thermostat is located in the front of the engine right next to the distributor just above the water pump. I would recommend having an expert from YourMechanic come to your home to -diagnose and replace your thermostat.

Q: Car tries to start, but won't

There are a lot a possibilities for the engine not starting. It could be anything from a bad fuel pump, crank sensor, wiring problem, or a mechanical problem. A qualified mechanic from YourMechanic can come out to scan your engine's...

Q: Won't start

There are a number of things that can cause your vehicle not to start including but not limited to the battery, starter, or fuel pump. I would recommend having the vehicle inspected by a quaified professional to determine the exact...

Related articles

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...
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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...