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02-27-2018, 09:57 AM
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#1 | |
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AF Newbie
Join Date: May 2006
Location: Ottawa
Posts: 41
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87 Sierra ignition module problem
Truck runs well until hot then will stall at idle and will not restart until cooled. Trouble code came up ignition module, so I replaced it with a new one. Won't start. Put the old one back in and it fired right up. Everything fuel wise is working as it should. Just wondering on what to check next. 87 sierra 1500, 5.7 automatic 4x4. Thanks.
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02-27-2018, 12:37 PM
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#2 | |
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A990 racer
 Join Date: Mar 2002
Location: Chestertown, New York
Posts: 16,950
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Re: 87 Sierra ignition module problem
Ok, when it won't start, you have confirmed no spark?t
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03-04-2018, 06:52 PM
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#3 | |
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AF Newbie
Thread starter
Join Date: May 2006
Location: Ottawa
Posts: 41
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Re: 87 Sierra ignition module problem
Confirmed zero spark with brand new ignition module. Put old one back in it fires right up.
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