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#1
10-28-2006, 06:46 PM
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89 s-10 4.3 backfires through tbi until good and warm
checked vacs and she runs strong when it's warm but until then.... she'll backfire and shut down.
 any ideas?
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#2
10-29-2006, 12:04 AM
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Re: 89 s-10 4.3 backfires through tbi until good and warm
Cool temp sens? Thjinks it's to cold outside.Maybe.
__________________
If it ain't broke.......screw with it till it is. Even at a Mensa convention,
Someone's the dumbest person in the room.
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#3
10-29-2006, 02:35 AM
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Re: 89 s-10 4.3 backfires through tbi until good and warm
Quote:
__________________
1995 Factory Blazer Service Manual for sale, PM if interested.
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#4
10-29-2006, 07:20 AM
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Re: 89 s-10 4.3 backfires through tbi until good and warm
tuned it up about two months ago,cheap champion plugs though. where would i locate the temp switch and wouldn't it rev higher it it thought it was cold out ?
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#5
10-29-2006, 07:21 AM
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Re: 89 s-10 4.3 backfires through tbi until good and warm
also it ran fine for about a month
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#6
10-29-2006, 01:09 PM
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Re: 89 s-10 4.3 backfires through tbi until good and warm
Quote:
What did your tuneup include? Do you know how to set the base timing?
__________________
1995 Factory Blazer Service Manual for sale, PM if interested.
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#8
11-01-2006, 01:41 PM
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Re: 89 s-10 4.3 backfires through tbi until good and warm
base timing? you got me on that one ( haven't got a clue) I just want it to run for about six months while a 350 is being built for me
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#9
11-01-2006, 02:49 PM
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Re: 89 s-10 4.3 backfires through tbi until good and warm
You have to remove the brown and black timing wire from PCM under the glove box carpet area, then set the timing to zero, and then reconnect the timing wire again and reset the computer by pulling the negative battery cable for 10 minutes.
__________________
1995 Factory Blazer Service Manual for sale, PM if interested.
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#10
11-01-2006, 02:58 PM
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Re: 89 s-10 4.3 backfires through tbi until good and warm
being a newbie please don't think I'm COMPLETELY STUPID but.... set the timeing to zero ie timing light? under the hood ?
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