Dtc 1222.

[aston_jag_tech]

New exahust on car after oem replaced. Tampered with idle air control valve, AFM. Replaced O2 sensor, TPS is adjusted properly. Leaning towards AFM as I messed with it. Any thoughts or direction greatly appreciated.

Known symptoms, hesitation from a stop to acceleration. Low power, slow acceleration at WOT. Rough idle in park, but ok in gear.

Thanks.

[aston_jag_tech]

Update: Replaced Throttle Body, Idle Air Control Valve, and AFM with used components from salvaged cars. Runs much better!

Once and a while check engine light comes on and 1222 stored. Checked stock exhaust from manifolds to new exhaust pipes(no leaks found).

No vacuum leaks found, just recently adjusted valves to .12"- no change in running.

I am going to perform a comp. test and then cyl leak down test within the next two weeks.

[632 Regal]

intake leak... i need to fix one that is a micro but persistant.