Skip the auto shop - Our mechanics make house calls

Q: Somewhat over heating. White greyish smoke coming out of exhaust. No heat

asked by on

I recently ran into an issue temp gauge and heat not working. Temp gauge who bounce around more than normal and mt heat was vey good. I was driving to work the other dayband hear a loud pop. I stopped the car and check my hoses belt tires ect and everything looked fine. Still having problems i went a head and replaced the thermostat and water pump. Now im having an issue with the car trying to run hot but the thermostat will bring temp back down to half. But i have white/greyish smoke coming out of the exhaust and still no heat. When the car is in park and idling the temp runs fine with no heat. When i drive it the temp gauge with almost hot the "H" but them come right back down. Also once the car has warmed up the "smoke" im seeing pretty much goes away

My car has 142000 miles.
My car has an automatic transmission.

A: Hi there. From the description you have pro...

Hi there. From the description you have provided, leads me to believe, there may be air trapped in the cooling system. Bleeding the cooling system can be difficult. A cooling system flush could resolve this issue. The white-greyish smoke cold, may just be condensation in the exhaust, being the smoke goes away engine warm. Continued driving with a low cooling system, could result in catastrophic and expensive repairs. I recommend having your vehicle’s erratic temperature gauge and white-greyish exhaust smoke be diagnosed and repaired by a certified technician, such as one from YourMechanic.

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

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: How do I change the instrument cluster language?

Your instrument cluster can be displayed in three languages: English, Spanish, and French. To change the language that is shown, follow these steps: 1. Press the Up/Down buttons on the steering wheel until Settings is displayed on the instrument panel,...

Q: 2003 Ford F-150 with an ABS light on

Watch my video "fixing ABS brake problems on your car." You cannot work on ABS brake systems without a dealer-level computer. That's just how they are. They are complex feedback computer-run systems. They measure the speed of your wheels with...

Q: I'm unsure about replacing my timing belt.

I agree with your local mechanic and am very sad to hear your father in law has given you such advice. The service interval for the timing belt on your car is every 60,000 miles. Mitsubishi's are known for breaking...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.