Ok so I just got a 03 Focus ZX3 2.0 5 speed manual and it already had a K&N cold air intake now getting a code P0172 running too rich bank 1 is there a Tune or something I can do to make it NOT run to Rich cause when u come to a stop the car will Cut off and u have to start back what can I do to fix it
The pcv hose coming out of the back of the intake manifold would be the first thing to check. It is an old car with a lot of rubber parts that go bad with age.
Vac leak would be a lean issue not rich issue , Yes I can Custom Tune it and get it spot on for you
Tom
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