My car is running hot within 10 minutes. it runs all the ...


My car is running hot within 10 minutes. it runs all the way hot then drops and it does this until it doesn't drop to cool off anymore and the car is billowing smoke Mechanic's Assistant: Have you checked the coolant? Have...

My car is running hot within 10 minutes. it runs all the way hot then drops and it does this until it doesn't drop to cool off anymore and the car is billowing smoke Mechanic's Assistant: Have you checked the coolant? Have you noticed any leaking? No leak in my driveway and I've spent 70 bucks on coolant in the last 3 daya days Mechanic's Assistant: What is the make/model/year of your car? 2006 lexus gs300 Mechanic's Assistant: Are you fixing your GS300 yourself? What have you tried so far? I had my mechanic replace the thermostat and the radiator in June. car has been fine until this past weekend. im also experiencing hot air from my a.c. intermittently . i think its the fan. but it could be the water pump.

Automotive Expert
Hi! Welcome to JustAnswer. Thank you for contacting us for assistance with your vehicle. I'm Ron. I will be happy to assist you with your question. May I ask to whom I have the pleasure of speaking with today?

JoyaJoya Fredericks
Automotive Expert
Hello, Joya Nice to see you today! I'm sorry to hear you are having this problem. I know this can be frustrating. When you say the car is billowing smoke, is the smoke coming from the tailpipe?

no it's coming from the radiator
Automotive Expert
Okay thank you for the clarification, Please give me one moment to type out some information for you. Sit tight one minute. I'll be right back !

okare we supposed to communicate here or via text?
Automotive Expert
Thank you for holding Joya, SMoke coming from the radiator indicates the cooling system is not sealing usually due to a leaking radiator or the radiator cap is not sealing. The cooling system has to hold pressure in order to not boil over. Since you have already replaced the thermostat and the radiator then the next step would be to have the cooling system pressure tested including the radiator cap to be sure they will hold pressure. If they are not able to hold proper pressure the cooling system will boil over and that causes the smoke your seeing, the pressure test will also determine if in fact, the water pump is leaking as well as all the other components in the cooling system. I would also recommend that you have a block test performed to check fora leaking head gasket.

thank you!!!!!
Automotive Expert
You're very welcome,Joya! Glad I could be of some help today! I hope everything works out well for you! If there are any additional questions on this issue that should arise, please feel free to reply and ask! Have a great day.
Automotive Expert
Thank you as well.

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