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My S-10 is idleing rough and cant drive it

Tiny
SLIMTHUGG
  • MEMBER
  • 2010 CHEVROLET S-10
My 1992 gmc sonoma with 153000 miles with a 4.3 liter is idleing rough and I cant figure out what the problem is I replace the spark plugs, spark plug wires, ignition module, and the distributor cap and rotor. The problem is still there I also checked for any vaccum leaks and there isnt any. The code is showing that it is the map sensor but when I put the new one on it was still running rough. Could it be any thing esle that leads to the map sensor or what? Could you give me any ideas what it could be and get back at me I would really appreciate it?
Thanks. :)
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Saturday, March 24th, 2007 AT 6:10 PM

3 Replies

Tiny
DUDER1
  • MEMBER
  • 15 POSTS
Make sure that both injectors are woking. Sometimes when the breather is put back on. On of the injector wires will have been pinched, or the insulation will be cut, and short out the injector. Gl
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Tuesday, March 27th, 2007 AT 7:15 AM
Tiny
MCFERRANCE
  • MEMBER
  • 100 POSTS
Check the EGR to make sure it is closed and the EGR controller as it may be opening the EGR prematurely or keeping it open.
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Wednesday, March 28th, 2007 AT 10:04 AM
Tiny
JAX991
  • MEMBER
  • 7 POSTS
Check the egr valve! I have a 1993 s10 blazer with a 4.3, the valve would get stuck open with a small piece of carbon. Clean it and it runs like new.
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Saturday, April 7th, 2007 AT 10:11 AM

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