2005 Mustang Gt Want Idle An Bank 1 An2 Are Lean

David Widener

New Member
Jun 4, 2013
I need some help I just put ford racing Cylinder head Hot Rod cams An intake manifold on. An after I got done the car want idle I can take the Hose off the intake Manifold An create a vacuum leak an it idles fine but it Through Check engine light and it said bank 1 an 2 are running lean so can any plz help
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Let me get some more info from you.....will it run with a little throttle? Does it run than idle lower and lower until it stalls? Did you make sure all your sensors are pluged in? Did you install cam phaser lockouts? Are you still running variable cam phasers? What else was done besides cam swap?