2002 Chevy Blazer MAF or VAF Service Code

2002 CHEVROLET BLAZER
120,000 MILES • 6 CYL • 4WD • AUTOMATIC
Avatar
NEWKY2U2
  • MEMBER
  • 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
Advertisement
Avatar
MASTERTECHTIM
  • ✓ASE Certified Mechanic
  • 4,750 POSTS
  • ASE Certified Mechanic
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
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.