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.

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?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Somewhat over heating. White greyish smoke coming out of exhaust. No heat

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: I have replaced the break pads, calipers, and rotors on my 2003 ford explorer. My breaks keep locking up. I have also replaced the master cylinder.

Check the combination valve on the brake system. If the valve is sticking, then the fluid could be getting trapped and not returning. To check this valve, loosen the brake line on the back side of the valve (the side...

Q: The temperature gauge is fluctuating and showing colder

The thermostat regulates the flow of the coolant in your car's engine and controls when the coolant flows in and out of the motor from the radiator by opening and closing at specific temperatures. When your thermostat is not working...

Q: Q: Car won't start.

It is possible that you may have a bad battery cable or a faulty starter motor. If either of these components has broken down your vehicle will not start even with a strong battery. I would ask for help from...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...