Question about 2001 Chevrolet Venture

2 Answers

Antifreeze ts boiling back into reservoir. Possibly not circulating properly. Thermostat problem? Temperature fluctuates with changing load on engine. Approaches the overheating "red zone" with an extended mountain climb.When going down the mountain, temp. gauge drops to below normal operating level. Fluctuation seems odd.

Posted by on

  • steve381 Sep 12, 2009

    Thanks for the information. very helpfull. Have heard changing a thermostat on an '01 Venture is difficult to get to.Is there an online diagram showing me how to do this ?

×

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 285 Answers

It sounds like a possible head gasket problem,you can get the fluctuation from combustion gases getting pumped into your cooling system and creating gas pockets,i would suggest taking it to a shop and have them do a block test to look for combustion in the cooling system to confirm the problem,that way you will know for sure,if it comes up negative they can also perform a flow test to make sure there is no restriction in the cooling system such as a plugged radiator or a bad thermostat,hope this sheds a little light on it

Posted on Sep 12, 2009

Testimonial: "I bet you've hit on the problem ! Car has been "using " antifreeze for a couple years now, with no leaking anywhere. Lost through the head gasket ?"

  • Efstathios Govas Sep 12, 2009

    yes the thermostat is a pain to get to,its under the throttle body,car should cool down for a while before you attempt to change it because the exhaust pipe is in front of it,the two bolts holding it on are 13mm heads,the top one isnt too bad with a socket wrench and a 6" exstension, the bottom bolt you will have to loosen up with a box end wrench almost until its all the way out(bottom hole is slotted),just be careful when reinstalling the housing,make sure the thermostat stays in place,if it moves when u tighten the bolts down you can crack the housing,hope this helps

×

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 111 Answers

Yes, going much below normal temperature going down hill does sound as though the thermostat is stuck open. Although overheating would mean it's stuck closed. Some water boiling into the reservoir is normal. Just so that bottle doesn't overflow. And approaching the "red zone" going up hill is to be expected. Anyway, putting in a new thermostat is cheap and easy and ought to be done every few years on general principle.

Posted on Sep 12, 2009

Testimonial: "THANKS !!!! Very Helpfull. Is ther an online diagram to show me how to change the thermostat on my '01 Venture ?"

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

2006 Chevy trail blazer. Keeps getting hot. Anti-freeze is full, overflow container is half full. Every time I turn it off can hear fluid in radiator boiling and bubbling?


Pam are you sure it's boiling? If the Antifreeze is boiling I'd think you'd see steam coming out of your reservoir as the water expands into the reservoir, but you didn't say you see anything like that.
Of course engines get hot, that's why we have the cooling systems but it doesn't sound like it's "boiling" to me with no signs of visible steam unless your antifreeze level is really low?

If it's really boiling, and you antifreeze level is good, then your reservoir should be getting filled up with expanded hot water that goes into it to catch it when it expands.

If the water isn't going into the reservoir, then maybe your antifreeze level in the radiator is too low and you need to add antifreeze?
.
Best to fill the radiator with the engine cooled down. If you ever have to open the radiator when it's hot, NEVER open it with your bare hand as you could get scolded with boiling water. Instead use a big thick towel to remove the radiator cap off a hot engine. Again, if you can, just wait until the engine cools then open the radiator cap.

With the engine cool, you can fill the radiator with a 50/50 antifreeze mix. The 50/50 mix come premixed 50 percent water, and 50 percent antifreeze. So you can throw that stuff straight into the radiator.

Non mixed antifreeze needs to be mixed 50/50. Some people use 50 percent distilled water when they mix it because distilled water doesn't have the minerals in it that may get stuck in your radiator. That's being a bit picky about it though. Tap water works fine in a pinch. The other 50 percent is antifreeze. You can mix it right in the radiator too, put in a measured amount of the antifreeze, followed by the same measured amount of water. The water pump will mix it all together when you run the engine.

Put the cap back on and run the engine and if/when the water "boils" it should go into your reservoir. If it does boil in go in the reservoir then yes...your engine is getting hot and the antifreeze is boiling.

When the antifreeze boils, it's probably because your thermostat is stuck closed. That means the thermostat isn't letting water circulate through the radiator to get cooled. Thermostats are cheap...no more than $30 I'd say for most cars. Changing them is pretty easy too as they are usually right at the top of the engine. A mechanic may charge $100 to change it....but it's an easy job on most vehicles requiring just a couple sockets/socket wrench.

Oct 03, 2016 | Cars & Trucks

2 Answers

Overflow tank boils when hot


Its normal for the car to have antifreeze going to the overflow tank if thats what your asking.

Aug 24, 2013 | Hyundai Tiburon Cars & Trucks

1 Answer

2001 Chevy Lumina. Got hot, pulled over. Reservoir was boiling over but radiator cap was cool to the touch. Let it cool off. Check water in radiator and reservoir, needed very little. Started driving and...


Sounds like your thermostat is sticking closed at times, not allowing coolant to circulate through the radiator for proper cooling. Replace thermostat.

Mar 01, 2013 | 2001 Chevrolet Lumina

3 Answers

My 92 for taurus wagon is blowing cold air instead of hot air, what could be the problem?


Behind the tempearture switch is an arm that is telescopic and raises and lowers the temperature. If this arm is either broken off or loose, it can create an inability to change the temperature. It can also be a problem with the heating unit in the ac in the car.

Mar 21, 2011 | Ford Taurus Cars & Trucks

1 Answer

The antifreeze reservoir is full and doesn't hasn't fluctuated, yet the vehicle is getting very hot and smokey smelling. the pressure gauge doesn't reflect overheating butts clear at the antifreeze isn't...


is the water pump working and circulating the antifreeze. if it is working, I would flush out the system and replace the thermostat before refilling system. you can buy radiator flush at any auto parts store. you can back flush system through radiator. just follow directions on back of flush bottle. have a good one!!

Nov 10, 2010 | 1999 Plymouth Voyager

1 Answer

The car is overheating and i noticed the fan stays on


First make sure there is a good 50/50 mix of antifreeze and water and that it is filled properly. Second, it sounds as if the thermostat may be stuck. If it's overheating, the temp sending unit controlling the fan is going to tell it to stay on. Change the thermostat and fill it with fresh 50/50 mix of water/antifreeze. Run the engine to normal operating temperature with the heater running and the radiator cap off. Ensure there is good circulation once it reaches normal operating temp. If there appears to be no circulation you could possibly have a bad water pump as well. This should take care of your problem.

Sep 28, 2010 | 1998 Ford Contour

1 Answer

I recently noticed in my 96 ford bronco 5.0 that when i turn the heat on it goes from cold to warm and then back to cold over a period of driving,but nowhere near as hot as it use to blow and also the...


Is the coolant level full? Sounds like air pockets, as a temperature sensor can't read air temperature. If it looks good, you might have a circulation problem, due to plugged radiator, or heater core, or possibly a worn out water pump. You can also "feel" around the thermostat to see if it's opening properly.

Sep 18, 2010 | Ford Bronco Cars & Trucks

1 Answer

OVERHEATING WHEN COOLING SYSTEM IS WORKING PROPERLY


Check the temp control sending unit, and circulation in the radiator, change the antifreeze, and check the thermostat by placing in boiling water or replace.

Aug 07, 2009 | Chevrolet Equinox Cars & Trucks

2 Answers

Dodge 318 overheating.


HI. It could possibly be the the thermostat is stuck shut. If thats the case when the vehicle warms up it will probably overheat all the time. The best way to tell is buy a new one and change it. They are usualy around $10.00 at any autoparts store. If you change it and it still overheats, it could be the waterpump.

Mar 15, 2009 | 1983 Dodge Pickup

Not finding what you are looking for?
2001 Chevrolet Venture Logo

1,204 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

75077 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7768 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...