Question about 1993 Chevrolet S-10 Blazer

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How can i idle the throttle down on my 93 S/10 blazer 4.3L 4wd

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It's computerised. If it's revving, check for vacuum leaks, or the throttle position sensor. Make sure you don't have a loose spark plug.

Posted on Nov 17, 2009

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1996 S10 Blazer revs up and down and idles high. Stalls when smash on the gas? whats the problem


Idle air control motor. On the side of the throttle body. Either real dirty or bad.

Aug 06, 2014 | 1996 Chevrolet Blazer

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1983 s10 blazer low rough idle and trys to die when starting have to give it a little gas and put it into drive real quick then when slowing down keep foot on gas pedal as i also slow down with break pedal


Could be several things, a vac leak, dirty throttle body, or faulty idle air control valve.
The computer controls idle speed by how much air enters the throttle body thru the valve.
Usually a vac leak would speed up the engine unless it is causing the rough idle.

Jan 10, 2013 | Cars & Trucks

1 Answer

Run away vehicle-99 chevy blazer wants to accelerate to 1500 rpm,braking will bring idle back down. What's problem?


In most cases problems with idle speed involve the idle air control valve or a dirty throttle body. The computer controls idle speed by how much air is allowed into the intake thru the control valve.
If the throttle is not sticking, I would check the valve and the bore of the throttle body.
You could also have a vac leak but that would usually be a constant problem.

Sep 19, 2012 | 1999 Chevrolet Blazer

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'93 chevy S-10 Blazer 4wd (automatic) high idle & I have already replaced the idle air control/throttle positioning sensor & have checked for vaccuum leaks. (none of the above have fixed the...


dont know if this will help but have you replaced the coolant sensor (by the thermostat ) and the pigtail that connects it to the wiring also the map sensor may be part of the problem my 92 s10 did some what of the same thing and I replaced the temp sensor and that didnt fix it untill I put a new pigtail that connects to the wireing my son had a blazer that also did that I think ( its been a while ago ) and we replaced the map sensor and that fixed it

Sep 17, 2011 | 1993 Chevrolet S-10 Blazer

1 Answer

How to set base engine speed on a 1998 Chevy Blazer 4.3L, 4wd. W


You don't the computer does it.If you are having an idle problem check and clean idle air control valve.Its on or near the throttle body.

Apr 19, 2011 | 1998 Chevrolet Blazer

1 Answer

1995 Chevy Blazer will not idle down?


check the idle control motor on the throttle body! (iac motor) probably dirty with carbon and stuck open! or you have a vacume leak and air is bypassing in the engine unmetered!

Sep 11, 2009 | 1995 Chevrolet Blazer

1 Answer

Rough idle blazer 2000


change air filter.clean throttle plates.remove throttle body remove all electrical parts also all plastics and rubber parts.clean throttle body with gum out throttle body cleaner.dry off throttle body.replace gasket.scan it to check to see if egr valve leaking.also check all vacuum hoses.and pvc valve.

Jul 19, 2009 | 2000 Chevrolet Blazer

1 Answer

95 s-10 blazer idles rough


CHECK FOR A LEAKING INTAKE MANIFOLD GASKET, USE A CAN OF CARB SPRAY AND SPRAY AROUND THE TOP OF THE ENGINE, IF U HIT ON A LEAK U WILL HEAR THE ENG CHANGE TONE AND IDLE RPM.

Jun 25, 2009 | 1995 Chevrolet Blazer

1 Answer

94 blazer vortec 4.3 idle revs up and dont come down


check your Throttle Positioning sensor that should fix your rough idle the TPS controls the breather on the front of the engine its affixed to the right hand side of the throttle body just infront of the spyder on the V6 Vortec 4.3L Models

Nov 09, 2008 | 1994 Chevrolet S-10 Blazer

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