Skip the auto shop - Our mechanics make house calls

Q: I changed my antifreeze yesterday, while sitting at an idle in my 1995 Nissan Altima, i have heat. But driving down the road I hav

asked by on

I have heat at an idle but no heat while driving

My car has 130000 miles.
My car has a manual transmission.

A: Hi there. From the description you have pro...

Hi there. From the description you have provided and assuming this was not a problem, prior to changing the antifreeze leads me to believe, there is air trapped inside the heater core. Sometimes, the air will purge on its own, and all you have to do is add more antifreeze to the radiator with engine cold. Sometimes, it is necessary to purge the air. This requires experience to purge the air. If, this was a problem before the antifreeze change. It could be, a faulty (stuck open) engine thermostat. I recommend your vehicle's no heat while driving be diagnosed and repaired by a certified technician from YourMechanic.

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・Save up to 30%

Get a quote

What others are asking

Q: Why is there a burning smell in the car when the heat or air is on?

Hello and thank you for your question. The smell you are having is a result of a dirty cabin air filter that needs to be replaced. The filter is under the dash behind the glove box. If you continue smelling...

Q: My air conditioner is not working , but my heater is , what can be the problem

Hello. Thank you for writing in. The A/C system and the heating system have relatively little to do with each other. They share a blower motor, and climate control switches. With the heater working we can assume that these components...

Q: For some reasons the trip odometer on my 2014 Altima's

The first thing I recommend is to check all your fuses to ensure they are all good. It could also be an issue with the IPDM (Intelligent Power Distribution Module). The dash module needs voltage when the motor is off...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...