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Hesitation

 
 
 
 
  #1  
Old 10-26-2006, 12:52 AM
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Join Date: Oct 2006
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Nemo is an unknown quantity at this point
Default Hesitation

I have a 2000 Blazer 2dr. 4X4 5-speed with 75,000 miles on it. When I am at a comstant RPM while driving every once in a whil I will get a moderate hesitation. I have also noticed it during steady acceleration too. Replaced MAP sensor, fuel filter, cap & rotor, plugs, wires, cleaned throttle body. I noticed it about a month or two after I installed a K&N cold air intake on it. Looking for any help I can get
 
  #2  
Old 10-26-2006, 03:22 AM
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Default RE: Hesitation

Clean your MAF, if the K&N had excess oil then the MAF will get coated with not only the air cleaner oil but dust and dirt to....primary cause of these symptoms.
 
  #3  
Old 10-26-2006, 04:03 AM
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Default RE: Hesitation

you might want to check that the EGR valve is clean also.
 
  #4  
Old 10-26-2006, 11:24 PM
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Default RE: Hesitation

Could be a EGR valve sticking as stated by Chevy Lover. Remove it and give it a good cleaning. You may want to try some SeaFoam too.
 
  #5  
Old 10-27-2006, 01:40 AM
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Default RE: Hesitation

Replace your fuel filter.

 
 
 
 
 
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