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#1
10-07-2007, 08:21 AM
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91 S10 Blazer 4.3 TBI Stalling
I have a 91 s10 Blazer 4.3 TBI with no ABS Stalling whenever I Throw her into gear the idle plummets then i can drive a bit but soon as i hit the brake or stop giving gas she stalls. I ran the system check on her and i came up with bad o2 sensor, bad throttle position sensor, and bad ecm so i changed all those and still same problem. So i ran her for a bit, ran the test again now all my check engine light does is flash constantly when i run the check and the check engine light only comes on right before she dies. I ran a brake systems check on it and i get constant 9 flashes but i don't know what to check because i don't have ABS so the closest i can find is for a RWAL brake system which is a bad speed sensor so i bought one but now i cannot find it anywhere on my tranny. I know some s10s have them in the dash behind the speedometer so i took apart my dash no speed sensor. I have changed my plugs all that stuff changed my Ignition Control Module because it tested bad. Only thing i have noticed is one injector is spraying a stream instead of a mist so i am changing it today, but i doubt it will fix the problem any ideas guys?
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#2
10-07-2007, 10:22 AM
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Re: 91 S10 Blazer 4.3 TBI Stalling
Fix the injector first.
Both injectors should have the same spray pattern. Clear codes and recheck for codes and see how it runs. On rear wheel ABS before checking for codes make sure brake light is on or checking for codes may set a false code 9. MT
__________________
Remember proper testing gives us the answer to many problems. MT
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#3
10-07-2007, 01:19 PM
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Re: 91 S10 Blazer 4.3 TBI Stalling
ok i guess that will have to wait until payday in the meantime i found the right speed sensor and i replaced it same problem soo next thursday i will replace the injectors
Last edited by KLRea23; 10-07-2007 at 04:13 PM.
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#4
10-07-2007, 04:07 PM
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Re: 91 S10 Blazer 4.3 TBI Stalling
well i cleaned the fuel injecters with some gas and a really old and soft toothbrush i rembered doing this for an old firebird i once had now i broke both injectors soo now i have to buy both of em and my engine codes went away none for brake system and 12 (beginning / end of codes) for engine
and i checked all my fuses none broken all good Last edited by KLRea23; 10-07-2007 at 04:45 PM.
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#5
10-22-2007, 10:01 AM
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Re: 91 S10 Blazer 4.3 TBI Stalling
ok my fuel injectors are fine i checked my tank no gas but i was reading 3 quarters of a tank i dropped the tank and pulled the fuel sending unitmy float was bent and there is a small 5 mm hole on the gas feed line sooo i changed out my fuel sending unit now the truck runs excellent
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#6
10-23-2007, 01:19 AM
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Re: 91 S10 Blazer 4.3 TBI Stalling
can you copy your under hood emission label mine can not be read
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