Question about Chevrolet Venture

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I have a 2002 chevy venture with the 3.4l. The van overheated the other day and now it is surging and driving very poorly. The upper and lower monifold gaskets and thermosts have been replaced within the last 50k. It has had a "check engine" light on for the past 6 months, but otherwise everything was running fine. Also, there is a starter relay located under the battery that is melted from the overheat. Not sure if this has anything to do with it. I fear tht there is now a warped head with a leak. How can I rule this out? Thanks Brian in Boston

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  • 242 Answers

A head leak would push pressure into the cooling system. It would also suck water from the cooling system so you would have to keep topping up. It may also push water into the oil which would make it look like mayonnaise if bad enough. You might see oil in the cooling water.

A pressure test of the cylinders would show one doing lower pressure if there was a problem. You can buy a gauge and do this or ask your garage to do it.

Posted on Apr 28, 2017

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Posted on Jan 02, 2017

emissionwiz
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SOURCE: 2002 kia rio rxv check engine light came on again..

the check engine light is not caused by any wrong fluid level or dirty air filter or anything else like that, it is caused by well over 100 faults that can occur in the computer controlled electronic engine and emission controls, u will need to go to a Kragen or Autozone parts store and get a free OBD 2 fault code test to get the code that set your light.

Posted on Feb 17, 2009

SUPERMAN_B_1
  • 294 Answers

SOURCE: overheating

hello, have you ran a scan tool on it yet to see if its not your coolant temp sensor or other temp sensor if you don't own one you can have any place like auto zone run one for you for free you'll have more of a idea of whats wrong even if your cooling fan is at fault it'll let you know. when your chevy is at idol if the cooling fan is'nt kicking on then that's a good starting point,also check to make sure your anti freeze is'nt low and easy but over looked problem and your anti freeze cap could be bad and wont force the right amount to pressure through the cooling system also make sure you dont have air in your system when you changed the thermostat did you bleed the system through the bleeder valve mounted on the coolint system.and make sure your drive belt has proper tension even though you replaced the pump the drive belt has to be in good condition it drives the pump.also check your cooling fan fuse and the relay for it.

Posted on Mar 21, 2009

  • 132 Answers

SOURCE: 91-chevy astro van tail/running dash lights won't work,

wiggle the headlight swith a little. I have this problem with my chevy truck

Posted on Mar 23, 2009

  • 34 Answers

SOURCE: My 2002 Chevy Malibu is overheating. I found that

If your car is equipped with a 3.1 or a 3.4 litre V6 and you have preformed all of the above listed work then I would have to say its the intake manifold gaskets. They commonly blow on these motors. Just a design flaw, nothing but replacing them when they leak can fix this. Also run a coolant pressure test on the system to check for minor things like a leak that you cant see from visual inspection. Hope this helps.

757Nate

Posted on Nov 21, 2009

wracefans24
  • 1985 Answers

SOURCE: 98 Chevy Venture. Sounds like golf balls in the engine.

it could be either,main bearings or rod bearings,you seem to have a handle on it,now all we can do is take bets when the big knock happens!

Posted on Jan 24, 2010

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