Last post on Sep 14, 2009 at 11:31 AM
You are in the GMC Safari & Chevy Astro
What is this discussion about?
Chevrolet Astro, Van
#3 of 12 Re: 2000 Astro bucking problem [captaincanada0]
Mar 31, 2007 (5:11 pm)
I fixed mine!!!! ya!!!!! i just put in a new rotor and cap ! but you must take an air hose to the inside of the distibutor! there is little flakes of metal dust in there , thats what made it fun so bad! make sure the drain hole on the bottom of the distributor are clean and clear! mines working fine now for sure!!
#4 of 12 Re: 2000 Astro bucking problem [jef1qr]
Apr 14, 2007 (11:10 pm)
What do you mean by "bucking??"
#5 of 12 Re: 2000 Astro bucking problem [buffdizzle]
Apr 15, 2007 (7:32 am)
Missing, bad firing.
The problem was I had a cracked coil, which was destroying the dist. cap to soon. Fixed the coil, now runs great.
#6 of 12 Re: 2000 Astro bucking problem [jef1qr]
Apr 20, 2007 (3:39 am)
Mine is doing the exact same thing. I also found out that the colder and wetter it is, the worse it is. I've changed the Cap and rotor, plug wires, ignition coil, Mas air flow sensor, intake manifold air temp sensor, and fuel filter.
#7 of 12 Re: 2000 Astro bucking problem [mxer746]
Apr 22, 2007 (8:30 pm)
Discovered the problem and how to fix it. Apperhently, when GM made the distrubitors, they didn't heat treat the gear at the bottom right, and the upper bushing is prone to wear. All this allows for slop in the cap between the rotor and the cap contacts, allowing the spark to occ jump to nearest/wrong contact. Especially with moisture in the cap, it's a lot more pronounced. This could explain why I was eating distributor caps, like 3 in 3 months. Replaced the cap and distributor, and went for a 1000 mile trip over the weekend 500 miles of that pulling a motorcycle trailer, with no problems.
#8 of 12 Re: 2000 Astro bucking problem [mxer746]
Sep 27, 2007 (5:27 am)
I am having a similar problem with my Safari van. Did you replace the distributor? Was this problem accompanied by starting problem too? My van used to start on the first crank no matter what the weather was like. Now I have to hit it two or three times. Let me know at your earliest convenience. Thanks.
#9 of 12 Re: 2000 Astro bucking problem [dsiever]
Feb 10, 2008 (5:45 pm)
ya im back! you were right! the distibutor wore out! a new cap and rotor helped for a month or 2 but then it starting bucking again! I had to get a new aftermarket distributor now all is better! damn cheap gmc manufacturing! now its up for sale and im going to buy toyota from now on! sorry GM you brought this on!
#10 of 12 Re: 2000 Astro bucking problem [mxer746]
Jul 18, 2009 (6:05 am)
Sounds like my 2000 safari.
Did a complete tuneup
But when the weather was wet it would misfire give me a check engine and registar a p300 error code.
When dry out the problem would go away.
No one could correct the problem.
I did notice though that when the problem started that when it was cold and wet that the turn signal switch would also start acting strange.
I noticed that the misfires and the turn signal switch problem occured at the time.
I replaced the turn signal switch.
All my problems went away after almost 2 years of hell when it rained or snowed.
#11 of 12 Re: 2000 Astro bucking problem [jef1qr]
Sep 14, 2009 (5:36 am)
I have a 94 astro w/ same problem. After new wires. plugs, cap, rotor and fuel reg. rebuild it still does it. What fixed it
#12 of 12 94 astro problem
Sep 14, 2009 (11:31 am)
Fuel pump fixed it. Bad connection in the tank and a build up metal filings in the motor made it pump under the specs. My distribuator was just fine after 200k and the motor runs and acts like new.