How do I tell what the codes PO171 and PO174 mean on my 2003 Windstar?
What is your question?
I was wondering if my car does not have a visible vacuum leak, if there is a way to know based on symptoms where to go next with a PO171 and PO174 code? I know a problem with the intake manifold gasket is common, but it seems so is a mass flow air sensor that may need cleaning. Or perhaps an O2 sensor issue. The car starts up fine, seems to accelerate okay, but when stopped at a light it kind of bucks back and forth a little and one time it stalled.
Any suggestions on what to try first would be most appreciated!
What makes this problem better or worse?
Being stopped at a light
How long has your 2003 Ford Windstar had this problem?
RepairPal Certified shops can diagnose and repair your 2003 Ford Windstar. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
