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Vans & Minivans Chevy Venture Chevy Venture overheating problem
109 messages, Last post on Oct 09, 2009 at 5:58 AM
You are in the Chevy Venture Forum. Your Host is Karens
I have a 2000. I have completed the T-stat change. Do not remove the exhaust manifold. Use a 1/4" ratchet with extension and swival socket from behind the exhaust manifold to remove the lower bolt. You will need to remove the air cleaner, hoses, and throttle body. I have done it twice. The first time I used a aftermarket T-stat, then about a year later I was completeing a intake air gasket change and needed to remove the T-stat. It was a good thing the aftermarket was toast. The new one I purchased from Chevy, we will see how it does.
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Replying to: accgmec (Apr 20, 2008 8:17 pm) Glad i'm not going crazy. Reading about everyone else having trouble changing a thermostate or paying $400 had me wondering if i was crazy. I too changed my own thermostate easily on my own in my driveway with very little effort.
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Replying to: chases (May 20, 2008 7:35 am) |
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Replying to: 442dude (May 19, 2008 4:31 am) You're correct in the overheating statement. It does not go to RED, however it is going to the last white line which it never has done owning this vehicle. I was lucky to ever see it go to 1/2. I started taking notice to the temperature gauge once the issue started returning after the gas gauge was fixed and it continued to occur. Yes, I originally had the temp just go over 1/2 and the van performed its no start thing, until it cooled down for 10 minutes. This last occurance has taken triple the time to recover.. (eeks..) I will look to discuss with my dealer the area you describe as being a potential culprit. I thank you many times for your input!.. I'll write back with details as they occur. I wonder if this also would be an area for the orignal person I responded to in regards to this issue. Maybe kill two birds here!  Cheers.!
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Replying to: rockbazz (May 23, 2008 5:40 pm) 
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I bought my daughter a 2003 chevy venture with less than 50k miles. Ran fine first 5 months, now it is overheating (past half way). I took to a local repair shop I use, they felt it was the computer, fan does not come on soon enough, causing it to overheat, and I had to take to a dealer. Took to a dealer, they said the radiator was full of crud, had to be replaced and the water pump was leaking, price $1500.00. I had both replaced by my local guy who gave me the water pump and said nothing was wrong with it, still feels it is the computer not turning fan on in time, cost $779.00. Dealer says either the fan comes on or it doesn't. Now I have to take it back to the dealer to have it diagnosed again! The dealer said maybe the cause did not show up because of the water pump and radiator. Please, I acknowledge I know litte about cars and I am a woman so they think they can scam me, but that does not make sense. Any sugestions at this time? Can she continue to run the van past half without causing major problems?? Thank for any suggestions.
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Replying to: startingover (Jun 05, 2008 10:10 am) Forgive me if I type in random thoughts as there is a lot in your post to digest...I'll do my best to help... Overheating, needle past 1/2 way...How far? does it go into the red or is it hovering a little higher than you're used to? New radiator...hmmm...did your mechanic replace the thermostat when he replaced the radiator? It should be listed on the bill if he did...the thermostat could be hanging up and not opening all the way...the Ventures eat thermostats for lunch, yours might be bad...mostly labor to replace, inexpensive part, about 400 bucks cause of the labor to replace it...if the radiator was full of gunk it could have ruined the thermostat as well...did he flush the system? temperature sensor? there is a sensor that reads the temp of the antifreeze, could have been fouled by the gunk and reading incorrectly.... does the fan ever come on? if it comes on, then its OK...the temp sensor tells it to turn on...see above turn the heat on full blast...does the needle come down? the gauges in the Venture have also been known to be fluky.... I gave you a few questions...check it out and let me know...I think its OK to run the van as long as the needle stays out of the red but you should try to find out the problem in fairly short order....
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Replying to: 442dude (Jun 05, 2008 3:51 pm)
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Replying to: startingover (Jun 06, 2008 3:03 am) First things first...I'm not a mechanic unless there's some beer and a shade tree around...but I do have a Venture and I do work on it so I only reply to problems if I have experience with them...just wanted to be up front... That being said, I have 3 thoughts/suggestions: 1 - I don't think you've done any damage by driving it while the needle was just a tick above 1/2 way...its a little warmer than usual, but I don't think its a big deal. 2 - I wouldn't be surprised if changing the thermostat again would cure your problem...the new thermostat could have gotten messed up by all of the gunk that was in there before the radiator was flushed or even while/after it was flushed if it wasn't removed when the flushing was done. 3 - (and maybe less likely) After you refill the cooling system, there is a procedure to bleed out all of the air from the system. There are air bleeders by the thermostat housing and by the water pump which have to be opened to let all of the air out...perhaps this procedure was overlooked when the system was refilled? Good luck...let us know how you do... John
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