I'm replacing vacuum solenoids on f150 97 with 4.6 liter engine . In upper right corner by battery on fire wall are 2 valves. one has a 9h465-ba and the other has an aa at the end . Is there a difference? also 1132 code but have replaced o2 sensors. runs rich and ruff. injectors ,plugs, wires ,map. sensor ,Iat sensor all replaced. 98000 miles. coil packs also replaced.fuel pressure regulator, both temp sensors, throttle position sensor .pcv valve, egr valve and egr pressure feed back sensor.bought smoke machine and as far as I can tell no leaks. any help appreciated. gbakk@sbcglobal.net

 

A smoke test does not always provide an answer for a vacuum leak before the O2 sensor for bank !.
If the intake manifold sections or grommets securing the manifold are leaking a smoke test will not always show that..
Did you thoroughly check the PCV system and rubber hose connected to the PCV valve? They were known to crack at the curve and produce a vacuum leak..
Really should look at data stream info to see just what is happening with bank 1..

 

Atleast your parts guy was able to make his boat payment thanks to you. Connect a scan tool to view live data and check for codes. Look at fuel trims, they will indicate exactly how your engine is running. You want readings as close to zero within +/- 5. A trim going highly positive means a lean condition, a highly negative one means a rich condition.