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09-16-2005, 10:35 PM
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#1 | |
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AF Newbie
 Join Date: Mar 2005
Location: cleveland, Ohio
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89 s10 blazer 4.3 cuts off when stopping at a light
My 89 blazer just stops running with the check engine light and the battery light on when i stop at a red light. I can start it right back up and drive fine. the truck drives smooth. if the truck dosnt shut off at the light somtimes it might start to stutter and buck as if it is loosing power or just shut off seconds after i stop. someone please help!!
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09-18-2005, 04:03 AM
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#2 | |
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AF Newbie
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Location: cleveland, Ohio
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i know someone out there can give me a clue or some help.....
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09-18-2005, 05:24 AM
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#3 | |
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AF Newbie
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Re: 89 s10 blazer 4.3 cuts off when stopping at a light
Hello,
If you are not noticing any strange engine noise I would suspect the IAC (idle air control). They tend to get carboned up. If the check engine light is on all the time look at the MAP (manifold absolute pressure) sensor. Josh <>< |
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09-19-2005, 01:39 AM
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#4 | |
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AF Newbie
Join Date: Mar 2005
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Re: 89 s10 blazer 4.3 cuts off when stopping at a light
ill look into that becuase my clogged catalytic conv. was just replace. i dont know where to find the IAC
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09-19-2005, 04:46 PM
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#5 | |
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AF Newbie
Join Date: Sep 2005
Location: Louisville, Kentucky
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Re: 89 s10 blazer 4.3 cuts off when stopping at a light
listen for the whistle of a vacuum leak. possibly torn diaphragm in egr valve. definitely could also be iac or map. but i would first look for a vacuum leak as it is the most common i see come into our shop with the problem you describe.
ty |
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09-21-2005, 06:05 PM
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#6 | |
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AF Newbie
Join Date: Mar 2005
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Re: 89 s10 blazer 4.3 cuts off when stopping at a light
i replaced the IAC and MAP within this week i just checked all the emmison hoses for vacum leaks....the truck seems to idle a little better but it still hesistates when i come to a stop while driving any other advice?
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09-22-2005, 06:34 AM
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#7 | ||
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AF Enthusiast
 
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Re: Re: 89 s10 blazer 4.3 cuts off when stopping at a light
Quote:
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09-22-2005, 04:41 PM
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#8 | |
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AF Newbie
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Re: 89 s10 blazer 4.3 cuts off when stopping at a light
ill check the throtle body but the fuel filter was already changed.
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09-23-2005, 04:41 PM
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#9 | |
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AF Newbie
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Re: 89 s10 blazer 4.3 cuts off when stopping at a light
Four words: Throttle body rebuild kit.
You're lucky. My injectors just stopped altogether. Now I gotta figure out if it's the injector pulse or the fuel pressure regulator. I already checked the fuel pressure itself. Ya' know... could it be that the curb idle screw is set wrong? That might be worth looking into, if anyone's ever adjusted it wrong. Josh <>< |
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