Q: My car is blowing cold air when moving approx <30mph and temperature gauge is high

asked by on

My car is blowing cold air when moving approx <30mph (past 2 days) and temperature gauge was moving fairly quickly to high (as of tonight).

My car has 134000 miles.
My car has an automatic transmission.

Hi Mary. Thanks for contacting us tonight. In most cases, when your heater blows cold air and the engine temperature is hotter than normal, it usually indicates an obstruction of debris inside the heater core. Sometimes, having the coolant system flushed will remove the obstruction and clear up both issues. However, in other cases, the heater core will need to be replaced. It might be a good idea to have a professional mechanic come to your location and complete an on-site inspection to correctly identify the exact source of this problem.

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
  1. Home
  2. Questions
  3. My car is blowing cold air when moving approx <30mph and temperature gauge is high

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: Engine vibration even in idle. Check Engine Light is not on.

You're correct, your engine uses a timing chain. It also has variable valve timing (VTT). This system allows the engine timing to change in relation to engine RPM. A VVT fault could cause driveabilty issues both at idle and at...

Q: I had leaky vcg for a while. Finally got a guy to replace it and now its like i have a worse leak somewhere

Yes, it could be a coincidence especially considering the number of miles on the engine. When it comes to oil leaks, if your car is typical, there is probably more than one leak point. Without pre-cleaning the engine, it is...

Q: Loud sound on car when it start

It is possibly a starter motor, drive belt, engine, or exhaust system noise. There are other possibilities, too, but If you request an engine noise diagnostic, the responding certified mechanic will get this resolved for you. If you have further...

Related articles

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.