Q: overheat Infiniti QX4

asked by on July 18, 2016

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.

Car is overheating Inspection $79.99 - $89.99 Get a Quote

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.

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

Coolant leak but not sure from where.

Hello, the only way to find a coolant leak is to use a coolant system pressure tester and then inspect for leaks. A coolant system pressure tester has an attachment that replaces the radiator cap and is attached to a...

White smoke from exhaust while idling when pedal is pressed. Vehicle is a 2008 BMW 750i

The white smoke is usually a sign that you may have a blown head gasket which is also accompanied by the car overheating. The engine is also most likely burning the oil which is why it is consuming it but...

Makes a popping noice and blows out white smoke real bad. I don't know what the issue is. Any ideas?

Hi there. It seems that there could be a head gasket or intake manifold gasket is leaking causing coolant to enter the combustion chamber make the white smoke and the engine to have a popping noise. Also, since you have...

Timing chain gasket is bad. I check the engine oil and found chocolate foam. Is it possible the gasket can leak coolant in engine? Fresh rebuild.

Hi there. If you check the engine oil and see the oil look like a milk shake, then the engine oil is mixed with coolant or water. Also if you are finding gasket material in the engine oil, then a...

Engine puffs blue smoke; thumping noise at highway speeds

Hi there, thanks for asking about your 2004 Infiniti FX45. The blue smoke you notice on initial start-up is likely caused by worn exhaust valve stem seals. They allow a tiny amount of oil to get into the combustion chamber...

Battery drain won't let car start.

Sounds like you might be having several issues with your car. The car uses the battery initially to start, but once it is running the alternator provides the electricity the car needs to run. If the alternator stops charging, the...

Car overheating due to nonworking fan

The fan on your vehicle is an electric fan. It comes on as needed to help cool the radiator when the coolant reaches a pre-determined temperature. This is usually around 220 degrees. Fan motor failure is common and not a...

Poured coolant in engine, now it won't run.

Hello. If you poured anti-freeze into the engine crank case, then it may very well be possible that a serious mechanical issue has occurred. If any water or antifreeze find their way into the engine, they can contaminate the oil...

I have a 2010 saturn outlook XE AWD, I have noticed that my temperature gauge goes from 210 to 235 while I drive over 70 mph

You may have a problem with the radiator not flowing through all the channels and this will cause the engine to run hotter at higher speeds. You may also want to check the radiator cap to see if it is...

Related articles

How Long Does a Heater Bypass Tube Last?
In In order for the cooling system on your vehicle to work, you will have to make sure that all of its components are repair free. The thermostat that is on your vehicle helps to regulate the flow of coolant...
Symptoms of a Bad or Failing Electronic Ignition Pickup
If your car has an electronic distributor ignition system and the engine stalls or car does not start, you may have to replace the ignition pickup.
Symptoms of a Bad or Failing Coolant Tube
Common signs include low coolant levels, visible coolant leaks, and engine overheating.