Q: heater blowing cold air most of the time, possible coolant leak
My heater is all goofed up. I blows cold air and then hot air and then cold again. It keeps doing this the entire time it's turned on. I talked to a mechanic that said it's leaking coolant, so I filled up the coolant and I don't see it leaking. Do you have any ideas?
Recommended Services
| Heater is not working Inspection | $94.99 - $114.99 | Get a Quote |
A few different items can cause the heat to be intermittent. An air bubble in the cooling system, low coolant, a heater core failure, a coolant leak, and an AC actuator can all cause the heat to go in and out. If you want to have this checked, a qualified technician, such as one from YourMechanic, will be able to perform any diagnosis your heater and perform any repairs required.
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
What others are asking
AC not working at idle
Your symptoms lead me to believe you may have a problem concerning your cooling fans at the front of the vehicle. While the engine is running and the car sitting still, both fans should come on when the air conditioning...
Low oil pressure light
Oil pump failure can happen on high mileage vehicles. This is normal due to engine wear and oil pump wear. Before replacing the oil pump, I would suggest having it properly inspected. A qualified mechanic can perform an oil pressure...
High rpms and no acceleration
What you are describing may be a result of a faulty speed sensor, potentially low transmission fluid (https://www.yourmechanic.com/services/transmission-fluid-service) or a even a faulty transmission control solenoid. As your vehicle travels down the road, the computer analyzes data being sent by...
Oil Pressure light comes on after driving for 10 mins
If the oil pressure warning light has come on, the very first thing to do is make sure the cause is not a malfunction in the warning light circuit or oil pressure sensor. The circuit can be tested and the...
Low Oil PSI
Hi Roger. Although it is possible that your catalytic converter might be wearing out, it's most likely not the source of your oil pressure problem. Typically when an engine develops excessive sludge (caused by carbon deposits from burning gasoline) will...
how hard is it to change 2013 Chevy Captiva Sport Camshaft Position Sensor L4 2.4L
Hi there. Like any other mechanical repair, the definition of 'easy' is relative based on the level of experience you have, access to the correct tools and detailed instructions. If you're going to replace this component, I would highly recommend...
I wana purchasw this jaguar x type 03 but transmiasion only works in reverse dont know anh thing about transmissions so a few poi
Hi Paper T. Thanks for contacting us tonight. This type of transmission problem is commonly due to inner seal damage or other internal component failure. Unless you're ready to replace the transmission or able to completely rebuild, you might want...
MDX 5 speed auto transmission, when drive from 20 to 30 mph, shift cable shaken at D5, transmission makes click noise at D4 or D3
If the issue did not exist prior to the rebuild, it is likely the transmission was not properly rebuilt (not unusual because rebuilding a transmission is highly detailed, exacting work, plus a really good rebuild will incorporate all the design...
Related articles
How Often Do I Need to Top Off My Coolant?
"Coolant" is a term used to refer to radiator fluid. The purpose of coolant is to circulate through the engine compartment...
How Long Does an Air Bleed Housing Assembly Last?
The The air bleed housing assembly is located near the rear of your car’s engine. It is part of the cooling system, and consists of a small housing that has an attached bleeder valve. It only comes into play after...
How to Check the 5 Essential Fluids in Your Car
Checking your oil and adding engine coolant, brake fluid, power steering fluid, and windshield washer fluid are essential for maintaining your car.
Browse other content
Services
Maintenance