Skip the auto shop - Our mechanics make house calls

Q: overheat Infiniti QX4

asked by on

Yesterday my dad was driving the suv at a shopping mall in slow speed and all of the sudden the car's temperature gauge went from been normal temperature to hot. My dad stop the car and open the hood and we notice that the side of the passenger seat their was a little smoke coming out of a tube near the A/C inside the hood. My dad thinks it is the A/C that is malfunction that cause the vehicle to overheat. Today the corking perfectly and is at normal temperature but their is still a smell of something burning that comes out of the A/C inside the car. What do you think happen? By the way this is an 2001 Infiniti QX4.

My car has 265000 miles.
My car has an automatic transmission.

Hi there:

There are several issues that may have caused the vehicle to overheat ranging from a leak in the cooling system, to air bubbles or some other blockage in the coolant lines. In regards to the smoke coming from near the AC, that was most likely the overflow tank and steam caused by the overheat. When radiator coolant gets too hot, it can develop a pretty harsh smell that stays around for a while.

I think you’re best bet is to contact a local mechanic, such as one from YourMechanic, so they can inspect your coolant system to diagnose your overheating problem.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: There is oil leakage in little drops from radiator its kind of water mixed and light brown colour

The transmission has cooler lines that run into the radiator. The radiator has a built-in cooler for the transmission. If the cooler leaks into the coolant, it will cause a milky brown looking fluid. You should have the cooling system...

Q: Thermostat did not fix overheating problem

The cooling system is designed to keep the engine at the proper operating temperature. If any component in this system fails, overeating may result. This could be anything from a stuck closed thermostat to a leaking radiator. Overheating can cause...

Q: Safe to drive with one theromstat bolt

It would not be a good idea to try and drive it with only one bolt holding the thermostat housing cover on. You should should drill the bolt out and re-tap the hole for a new bolt. If you do...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...