Q: My oil light does not come on when the oil is low, and the heater only blows hot air for a short time.

asked by on November 10, 2016

I have 2 issues, the oil light and heater. My heater all of a sudden has quit working. When I turn on the heater, it will blow out hot air for about 20 minutes and then blow out cold air. Do you know what might be causing this? Another mechanic at a dealership said that if it was the thermostat, that a code would come up. I have recently had the codes read and the only thing coming up in the codes was for the Transmission Control Module, which I have an appointment to be replaced. I had recently asked a question about why my oil light does not come on when the oil is low. I have been so low on oil a couple times that my car has started to make noises before I realized what was wrong. I want to avoid this happening again. I was going to get the oil sensor changed, but the mechanic on here who responded to me said that my oil light does not work that way. How do I know if the oil sensor is bad? And when the oil is low? I cannot afford a diagnostics at this time. Thank you!

My car has 144000 miles.
My car has an automatic transmission.

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

After heating core replacement, oil gone and engine ruined

Hello. The heater core would not have anything to do with the oil. If anything they may not have properly installed one of the heater hoses which may have causes the coolant to leak which would have caused the engine...

Van cranks but wont start

If the starter motor is turning the engine over rapidly, at sufficient RPM, but the engine does not catch and run, that means that there is an ignition, fuel, air induction, or mechanical fault in the engine that will have...

Won't start. Just cranks, catches, and dies

Hello there, a few different faults will cause your 2001 Pontiac Grand Am to start and then die. Replacing the battery was a good start, as it can cause this type of issues. Other possible faults include the MAF sensor,...

Related articles

Symptoms of a Bad or Failing Oil Pressure Sensor
Common signs include the Oil Pressure Light coming on or blinking constantly despite oil levels being fine or the oil pressure gauge reading zero.
A Buyer’s Guide to the 2012 Chrysler Town & Country
While While the Chrysler Town & Country has been in production for over half a century, the 2012 Chrysler Town & Country is anything but old-fashioned. The model got a huge overhaul in 2011 and saw a few new upgrades...
How Long Does an Oil Pan Gasket Last?
Maintaining Maintaining a car is a bit easier said than done to all of the parts that are contained within your engine. One of the things that helps to keep the parts in an engine running like they should is...