Check engine light came on and i have a code P0171. Runs rough at idle but great otherwise. Any help please?
Apr 17, 2013 at 8:07 AM
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HMAC300
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48,601 POSTS
that is a code for a lean condition on one bank. check your fuel pressure it may be low causing this. should be 46.9-48.3 with vacuum disconnected if lower than that your pump may be going. System too lean bank 1
maybe an injector or intake leak or fuel pressure or exhaust leak. Will need to have hooked up to a scan tool and run diagnostics