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engine not running right

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  #11  
Old 05-30-2009, 04:45 PM
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i attached to this post
 
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  #12  
Old 05-31-2009, 07:09 AM
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The blue are just plastic plugs? No wiring coming in from the back?

I hate to say it but you may have the OBD 1.5. In which case your only option is finding someone that can read it, ie dealer.
 
  #13  
Old 06-01-2009, 09:34 AM
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Originally Posted by 95 gimmie
someone gave me a 1995 4wd 4.3l blazer. it's not running right, it seems to be missing. it smokes alittle and smells like it's running rich. i replaced plugs, wires, cap and rotor button. i tried to use a code reader but i guess it's not obd 2. i just kept getting read error. where do you think i should go from here?
Test the fuel pressure. The FPR's are a known weak point on these engines.
 
  #14  
Old 06-04-2009, 04:59 PM
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where is and what is the fpr?

i clean the egr valve. i been reading that alot on here but that didn't seem to help it much at all.

there is no wiring going to the blue plugs
 
Last edited by swartlkk; 06-04-2009 at 06:42 PM. Reason: Merged Consecutive Posts
  #15  
Old 06-04-2009, 05:14 PM
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please keep your posts together, theres no reason to start a new post for every comment/question you have have.
 
  #16  
Old 06-05-2009, 07:11 AM
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"FPR" = fuel pressure regulator. Try this thread. CLICK.
 
  #17  
Old 06-07-2009, 05:46 PM
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maybe a little off topic. but what is the purpose of the thing under the vortec cover. i took it out of the intake manifold it looks like a paddle valve of some sorts
 
  #18  
Old 06-07-2009, 06:43 PM
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Intake Manifold Tuning Valve.

Moves to optimize for cruising and accelerating.
 
  #19  
Old 06-10-2009, 07:46 AM
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I"m going to replace that fpr this week is there anything that i need to pay specail attention to or anything that i shoud replace will I'm in there
 
  #20  
Old 07-06-2009, 05:28 PM
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i changed the FPR and no change, any suggestion?
 



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