Overheating problems

Tiny
DAWN CHAMBERLIN
  • MEMBER
  • 2002 CHEVROLET VENTURE
  • 3.4L
  • V6
  • 2WD
  • AUTOMATIC
  • 226,865 MILES
So I just bought this van like 5 months ago. But when I sit at a traffic light or go through a drive thru the van starts to get hot so I turn on the heater. But the other day just got on the freeway and about 5 miles I noticed the temperature was pegged out on hot. So I immediately pulled over let it cool. Then filled with antifreeze and water, bleed the system and it worked. But today it did the same thing. Please help.
Sunday, June 13th, 2021 AT 12:17 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
Good afternoon,

Since you had to add coolant and bleed the system, it sounds like you have a leak. You will need to pressure test the system to determine the source of the leak.

https://www.2carpros.com/articles/car-is-leaking-coolant

https://www.2carpros.com/articles/radiator-pressure-test

I would also recommend replacing the thermostat as well since it has overheated.

https://www.2carpros.com/articles/replace-thermostat

This engine has many common places for leaks. The intake manifold is common, the water pump is common and head gaskets are the most common.

https://www.2carpros.com/articles/head-gasket-blown-test

https://www.2carpros.com/articles/engine-overheating-or-running-hot

Do the pressure test and let us see where the leak is located.

Roy
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Sunday, June 13th, 2021 AT 2:10 PM

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