My Chevy Venture van was doing something similar. Turned out to be a vacuum leak on the little "t" that comes off the PCV valve line. Its hidden under the triangular shaped throttle bracket. I could hear the air hissing from it. I undid the two bolts that hold the bracket down (10mm) and when i pulled the "t" out, the motor really went haywire! throttling up and down like mad until just stalling out 10 secs later... What i did: ok this is kinda redneckish, but i cut a small piece of washing machine supply line hose (smaller than garden hose). The size just happened to be perfect and i slid it on the end of the "t" and put it back in its hole... presto! No more vaccuum leak and my van is purring like a kitten now. Probly helpful to mention that after i put the throttle bracket on I hit the triangular part that covers the "t" with a hammer until it pressed down hard enough on the "t" to seal the tiny air leak it was still letting through. Hope this helps someone- sorry about the non-technical nature of this post, but it may give someone a $0 fix for their engine chugging at idle problem.
Jeramy

Answered by niz76
0 questions asked

ok this may seem stupid, lol but i'm not a pro. i have a 2000 venture and the hose circled in red is cut on my van and i need to know where it goes.

Answered by luckylynk
1 question asked

I have 2000 chevy venture with similar problem. during acceleration no problem. Once the speed and rpm steadies I get random bucking like misfire. Oddly, if I unplug the EGR valve the problem goes away. no coded from my reader accept now it shows codes for EGR being unplugged. It is not speed dependent nor gear dependent. I replaced the EGR and checked the electrical connection. Sounds like a vacuum issue but I have no idea where to go from here. Any ideas? Thanks Chris

Answered by cmnsbm
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Hose circled in red is the PCV hose.

Answered by rivermikerat (expert)
5,494 answers provided

Check the following -- the original poster did fix the issue and explained the fix:

http://chevroletforum.com/forum/venture-29/2000-venture-studder-problem-29946/

Answered by richard_vabeach
0 questions asked

Thanks for that information, Richard. I'm certain it will help.

Answered by rivermikerat (expert)
5,494 answers provided