Question about 2003 Chevrolet Venture Passanger
Sometimes when turning hard and braking the van will stall especially at very slow speeds. When leaving a stop sign it seems that you need to press the gas pedal harder to get going and it lurches with a bit of hesitation just before. Codes have come up and the Throttle pos. sens. was replaced and that did not seem to solve the problem. The mechanic lately noticed the pcv valve was not in the valve cover, so he replaced it with a tighter new one, and it still does the hesitation and stalling. I thought it was a vacuum leak but they could not find one. My Venture also has traction control, and sometimes it comes on with no real problems on the road during the summer. I don't know if all this is related but it is really annoying and potentially dangerous. The techs. cleared all the codes and they are perplexed as to what really is the possible problem. Thanks Tim McGregor Duncan BC Canada
I had somewhat the same problem on my 03 chev venture van. It was the tranny slipping or rather not engaging. When you try to pull away from a stopped position the vehicle start to accelerate momentarily then hesitate then **** forward with a loud thunk. Turned out to be a solenoid or sensor in the tranny. The dealership at first refused to do anything saying it was normal and to allow more time after putting it in gear. After I proved to them that it was not normal ( by taking them on a test drive in my vehicle then in one of thiers) they agreed to fix it. Worked great for 20-30000K then came back. Now have 260,000k so it is more nuisance than a problem at least at this point.
Check your fluids and possibly look into using a transmission additive designed to stop slippage
Posted on Dec 21, 2008
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Posted on Jan 02, 2017
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This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control
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