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96 blazer 4.3 4wd random bump = engine off

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Old 06-12-2019, 07:18 PM
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Question 96 blazer 4.3 4wd random bump = engine off

so yeah, bout as basic as it sounds, any time i drive the ole green around and i hit a small pothole the truck completely farts out, electrical systems stay on, so music keeps going but the engine is off with all dash lights on; abs, gauge light, airbag, etc etc. so far ive replaced much of the trucks cooling system thermostat fan clutch radiator water pump. also i have replaced the fuel pump, so much quieter now thankfully. but yeah when it dies i'm always able to crank her back up not a problem tho if im on a rough road and its still bumping around, it'll die again. i dont think it could be battery since my electronics dont turn off, phone is hooked up via blue tooth and music doesn't stop nor radio cut off, also jiggled the battery and yeeted on it a bit to test the theory, i have checked the egr, maf, air filter is new, gave every harness i saw a squeeze to make sure they weren't loose or hot, so now im just at a loss at what to do here.
 
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Old 06-12-2019, 08:36 PM
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Sounds like the ignition circuit is being interrupted. Could you have a bad ignition switch? I had mine go out on my 82 Honda all at once as I went around a corner in a small town about 35 miles from home. Luckily I was able to call a friend to come get me and then I went back and towed the Honda home.
 
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Old 06-13-2019, 03:39 PM
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is there a sure fire way to test the switch? i have read that blazers tend to do this kinda crap
 
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Old 06-13-2019, 07:38 PM
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What if you tap it while it is parked and running... maybe if theres a short in it, the tap will act as a bump...
 
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Old 06-22-2019, 03:34 PM
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pretty sure its the switch, got the ole crank and no start now, ive been told push to start can bypass this bs so i dont have to drop 50 bucks on a damn crappy harness that will fail in 2 years, so if you or anyone else knows of a push2start bypass for this PLEASE hmu i cant find jack for blazers cus no one owns a damn 2 door 96 these days
 
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