I have a 2001 ford Ranger I have a code for p0171 system too lean bank one. I already changed intake gasket still have code coming up. what else can I look for
The O2 sensor on that side may be bad.
easy stuff first..fuel pressure/filter ok..we never know ox sensors ok?..is there a vacuum leak??have you sprayed the intake area/all hoses? egr ok?spay it too all over and under... a dirty airflow sensor ... just clean or replace the MAF
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