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Vans & Minivans GMC Safari & Chevy Astro GMC Safari/Chevy Astro Starting/Stalling/Idling Problems
155 messages, Last post on Dec 01, 2009 at 12:48 PM
You are in the GMC Safari & Chevy Astro Forum. Your Host is Karens
my idle on my astro van 1995 is so rough when i am stopped at the light it turns off sometimes and when it is parked it is also very rough, i do not know what to do but when it is moving it is very smooth. can some one please help thank you
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Replying to: mbeach (Feb 26, 2007 4:04 pm) Step one is it not getting fuel ? Or is it no Spark ? An easy way to test is will the van run on ether (staring fluid). If it runs then the problem is no Fuel. If it doesn't then it is spark.
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I have the same problems. Whenever it's damp outside, the van will not start. I have brought it to the mechanics several times and still have not figured out the problem. As I can see, this is a problem with the safaris and the astro vans. Has anyone been able to diagnose the problem? If so, please respond because I have 4 kids and I need my van!
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Okay, I'll try to keep this short, but i dont want to leave anything out. 93 Safari Engine Code Z. Bought for four hundred bucks 2 years ago, never laid down on me till last wednesday. best vehicle i have ever had. Stalling at idle and low revs It just quit on the way too work. Pulled over, looked for obvious under the hood. Nothing. Magically it restarted. I drove to work. That day on the way home, it quit. Did not restart. Got a ride home. The next day i went back to where I left it. this was 12 hours later. it started. I drove it back to work and left it in the heated garage. i will mention that temps have been just around the freezing mark, but this seems to have no bearing on it. At work I park in a heated garage where temps are around 60f. At home I park outside. I removed the doghouse, spent the afternoon poking around. Never started. Not once. This was after I drove it back to work that morning. The next day, I brought my mechanic friend in. He figured it was the fuel pump. It only seemed to prime intermittently, and the the mallet on the gas tank trick didn't really work. I had it towed home. Luckily i have a large shop where i live. Assuming it was the pump. I proceeded to remove and replace the pump, sending unit, tank (I had a brand new one laying around) and the filter. Yippee!! All done!! Its starts!! yahoo!! STALL!! Next. Now it wont start again. I then proceeded to flight test some of my tools. Hmmmmm. Having a closer look, we noticed no fuel spray at all from the injectors when the starter is engaged. OK. Check the voltage. I have 12V at the injectors, but no pulse. I do not have a noid light but i dont think i need one. We unplugged the idle air controller. BAM!! it starts, runs, does not stall. Let the engine get good and hot, plug the IAC back in, idles down real smooth and nice. now it will restart when i Shut it off with the IAC plugged in (I should mention I had a recent oil change, new plugs, cap and rotor. And the van has been exhibiting these symptoms of stalling for a few weeks before any of that, or the fuel system work was done.) So i had a used IAC. Tried that, seemed to work for a bit but in the end it still is stalling. My buddy works at a GM dealer, so he orderd me a new one. I drove to his place of employment this morning onmy way to work to pick up the new IAC. By then, the engine is good and hot. I put the part in right there. Idles down nice and low drove the LONG way to work. About a half hour. Never stalled once. I went out to the garage several times today and it started every time. Five oclock i got to leave. Start, reverse, STALL. Tom the security gaurd, was watching. He found it rather amusing. I didnt, I lost it. I unplugged the IAC started it, left a strip of rubber about forty feet long in our newly surfaced indoor parking garage, said a bunch of things to Tom that even going to church would never excuse. Boy, am I ever gonna have to apoligize to him tommorow. Yikes. I dont think I have a vaccum leak either, not totally sure, but I left the van over night on the weekend, and first thing I did in the morning before trying to start i was to unplug one of the hoses (small one) from the cruise control servo. It was holding there any way. I was starting to think this was a hot/cold engine problem but it doesnt seem to matter wether the engine is hot or cold. Someone help. I just had a brainstorm. Do i need to unplug the ecm fuses inorder to clear any fault codes before the ecm will recognize the new IAC? I do not have a scanner, just the little metal key. Is there any web pages that give you what the engine ligh flashing sequences are?     |
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Replying to: aouellette (Apr 05, 2007 7:19 am) |
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Replying to: jateegee (Apr 11, 2007 5:36 pm) advice. |
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Replying to: cargob00m (Nov 02, 2006 2:48 pm) |
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Replying to: aouellette (Apr 05, 2007 7:19 am) |
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Replying to: cargoman (Feb 27, 2007 10:19 am) |
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