2002 Chevy Blazer MAF or VAF Service Code

2002 CHEVROLET BLAZER
120,000 MILES • 6 CYL • 4WD • AUTOMATIC
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NEWKY2U2
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  • 1 POST
2002 Chevy Blazer. Starts up fine cold, but when ran for 7-8 miles (when it gets warm) starts to bog out like not getting enough gas. The code MAF or VAF comes up. I can let vehicle sit for 1 minute-start it up & runs ok for another 7-8 miles. While vehicle was running & in park, popped the hood & pushed the idle arm to give her gas & she wants to bog out again & shut off. Changed fuel filter, but still does the same thing.
May 27, 2008 at 3:32 PM
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MASTERTECHTIM
  • CERTIFIED EXPERT
  • 4,750 POSTS
unplug the mass air flow sensor. this is the sensor in the air intake rubber tube right at the air filter housing. if it runs better then replace it or try spraying cleaner through it. very common.
May 27, 2008 at 4:08 PM