Q: Heat shuts off when idling n driving

asked by on

When I start my jeep my heat comes on after 10 mins or so it shuts off. N when I shut the vechile off n wait it sounds like I am starting a cold car. But sometimes it don't come back on. N it shut off when I am driving. I need help since it is cold now

My car has 190000 miles.
My car has an automatic transmission.

The engine controls the heater control valve opening and closing as the engine is up to operating temperature. If the engine temperature is too low then the heater output will go cold or low heat output until the engine is back up to operating temperature again. You should check to see if the thermostat is maintaining a constant engine temperature at the rated 190 degrees. If the weather is extreme cold then the engine may not be able to get up to operating temperature and stay there when you start driving. you may have to block part of the radiator to help maintain the engine temperature. If this still does not let engine maintain engine heat then you may be out of luck due to extreme weather the vehicle is not designed to operate in.

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. Heat shuts off when idling n driving

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: Q: Heating problem

The first thing to confirm is whether or not the engine operating temperature is in the normal range and whether there is sufficient coolant in the radiator. If, for example, the engine cooling system thermostat is stuck open, and thus...

Q: Is 182K miles on 08 Jeep Commander with hemi a problem to worry? (a lot of highway-30K/year for 5 years.)

Hi there. The hemi engines are designed to run for about 300K miles before needing any rebuilding. If the engine is running strong and has no problems, then I would not worry about the engine. I would, however, check the...

Q: Security system is activated and is not letting me turn the car on

Hello there, the security system is an important safety feature with your 2004 Nissan Xterra. You will not be able to disable the security system as it is integrated into the ignition system. Common causes for the security system to...

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...