running rich, idle surge, CEL

[green_GST]

Symptoms:

-CEL

-idle surges @ 1200-1600 rpms, unless I disconnect the throttle idle sensor, then it sits at 1500 rpms.

-AFR at constant idle is 12

-AFR when it's idle surging goes from 11-17+

-While driving, over 2000 rpms, the AFR drops below 10 and won't accelerate anymore unless it boosts, then it sits at 10.3ish. Under 2,00 rpms, the AFR is 10.3-10.5

All the sensors look to be connected, and it's boosting right so it's not a boost leak.

This all started last night. Out driving and it was running right, get home and let it idle before I shut it off and it starts out of no where. My mods list is up to date, except I now have a big 16g.

 

[ontario AWD]

What code is the CEL throwing you?

 

[green_GST]

Ok, we did the old trick using a LED and wire and jumping it from pin 12 to pin 1. It's throwing a code for the "volume air flow sensor" (according to VFAQ.com) We tried 3 different MAF's and nothing changed, still has the same code, is the MAF different from what they're saying the code is? If not, then what gives?

 

[ontario AWD]

Check your wiring on the plug going to the maff,18 years of use is enough to cause trouble.

 

[VTEC_THIS]

Have you checked for any vacuum leaks?