2001 Lexus IS 300 Repair Question
Topics covered: Engine, Check engine light, Engine performance.
Mileage: No information provided.
Mileage: No information provided.
Asked on November 5, 2008
2001 Lexus IS 300 Trouble codes
Engine Performance problem
2001 Lexus IS 300 6 cyl Two Wheel Drive Automatic 120000 miles
my check engine light keeps coming on. it gives me code p0174 and p0171 indicating that bank 1 and bank 2 is running too lean. does this mean there's a vacuum leak, if so where should i start looking for the problem?
2001 Lexus IS 300 6 cyl Two Wheel Drive Automatic 120000 miles
my check engine light keeps coming on. it gives me code p0174 and p0171 indicating that bank 1 and bank 2 is running too lean. does this mean there's a vacuum leak, if so where should i start looking for the problem?
Asked by philip_inoAnswer
Replied on November 5, 2008
Hi philip_ino,
Thank you for the donation.
Yes, it could be a vacumn leakage and you need to check all the hoses at the manifolds. Is the idling rpm stable?
The other possible cause is the fuel filter, if it is clogged, the fuel supplied would be lean.
