"" wrote: > I have a check engine light and the codes that are pulled are > 171 and 174 > bank one and bank two too lean, I have changed the O2 sensors, > the mass > air, flow sensor throttle position sensor and the light comes > back on, > short of buying a break out box for 500.00 I could use anyones > advice
well you wasted your money on buying o2 senors and maf sensor, MAF sensors can be cleaned I never herd of a TP sensor creating this code you have a vacuum leak either intake manifold gaskets or vacuum lines check them very carefully If you have a scan tool curious what is your Long fuel trims and your short fuel trims long should be 0% +- no more than 10% short should be hovering around 0% this is why it pays to bring your vehicle to a dealer, I would have fixed your problem for less than you spent on wasted parts