2001 Lexus GS 300

2001 LEXUS GS 300
92,000 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
BOBN60
  • MEMBER
  • 1 POST
check engine lite on, codes 0171,0172, come uo, lean fuel at O2 sensor banks 1,2 , checked for air leaks at intake,none, repaced the coolant temp.sensor, al with no resolve. Went to highest octaine fuel codes come back, any suggestions?
Jan 28, 2008 at 6:19 PM
Advertisement
Avatar
LOSTINMARS
  • ✓ASE Certified Mechanic
  • 222 POSTS
  • ASE Certified Mechanic
i'm curious as to why the coolant temp sensor was replaced???

assuming there are no vacuum or air leaks, i'd go with an airflow meter. common on yotas
Jan 28, 2008 at 8:30 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.