Question about 1994 Chevrolet S-10 Blazer

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I have a 1994 with vortec 4.3 that shakes sometimes

It shakes when stopped at a light or on idle sometimes
i changed the plugs, wires, cap rotor, and fuel filter hoping to solve the problem but it still persists any advise?

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Shakes how? While stopping? Or solely while idle, Engine light on?

If if shakes while stopping you need to check you're wheel hubs and or Suspension ,

Shakes at a light, You may have a bad fuel Injector, Check you're psi in you're fuel pump, A TPS would cause low idle or sometimes high idle, With low idle and a bad motor mount it would shake,

I know theres a few things I'm missing but,.. I have a major Headache atm so I'll get back to you with some more, when i can think better. :)

Posted on Sep 08, 2009

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Try replacing your idle air control valve. or yours might just be misadjusted. drive for about 5 min. at 40 mph. this tells the ECU to adjust the idle air control valve. it helped with my blazer

Posted on Sep 11, 2009

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Check the timing I just bought a 1994 s10 blazer 4.3 vortec engine it was shaking when stoped and would even cut itself off.

Posted on Sep 08, 2009

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