2002 Pontiac Grand Prix Had Tune Done Replaced Mass Air Flow Sensor After This

2002 PONTIAC GRAND PRIX
117,000 MILES
Avatar
YBTMB0
  • MEMBER
  • 1 POST
I had a tune up done, replaced the Mass Air Flow Sensor, After this work my car is getting 60 miles less per tank than just before the tune up. I replaced the Catalytic Converter because i was told this was the problem. I am still only getting about 250 per tank instead of the usual 300. I bought this car new and i have never gotten less than 300 per tank. What could be the problem?.
Jan 31, 2013 at 8:57 PM
Advertisement
Avatar
ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
why did you replace it to begin with??? what was the issue that made you do this.???

new sensors take time to learn the system. they adapt to the vehicle. it could take some mileage for this to settle in

Roy
Jan 31, 2013 at 9:32 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.