Engine codes thrown, high air flow, RIPP SC the problem?
Had some changes the last 6 weeks. Came across my dream Jeep, so I bought it, sold the TJ on the first day, have been a proud JKU owner for a month until yesterday.
The Jeep: 2008 JKU, Automatic, 89000 miles on 3.8L V6, RIPP Gen 1 to 2 Stage II Supercharger, BBK long tube headers and high flow cats, 5.13 gears (no lockers), 37" tires, 6" Teralflex LA lift, and more little unimportant details.
The Problem: Had the Jeep for 6 weeks (roughly 1,200 miles I've put on it). Has ran great without a hiccup... Until this last weekend. I'm sitting at a light, after driving for 30 miles, when all of a sudden the Jeep beeps, surges forward, and RPM's go up to 1100 rpm. I have three new lights, a check engine light, the throttle position light, and traction control light. I take it home, throw the predator/diablo scanner on it, and I see two codes:
P2173 (Throttle Actuator Control System, high air flow)
P0507 (Idle air control system, rpm higher than expected)
I go online to all the Jeep forums, do hours of research, went out checked for vacuum leaks (found none), checked the metal EGR tube (no cracks), checked the EVAP canister (no issues found, all gaskets accounted for), clean the throttle body (was a little dirty but not horrible). I fire the engine, have a funny intermittent idle then smoothes out, then just dies without warning. I fire it back up with no problems and see "GASCAP" on the dash. I checked it and it was loose, I tried to reset it and it came out rather easy again. Went to the store bought a new one, replaced, reset the codes, fire up the engine, and same issues and same engine codes came up. Retightened the boost tubes hose connectors, did a throttle position reset (hold gas pedal to floor, turn key on and wait 20 seconds). Fired it up, ran and idle great. Drove it for ten minutes with great results and no codes, got excited thinking I fixed it (bc it drove great with lots of power!) when all of a sudden I'm sitting at another light when I get the exact same issue as I did at the one light (surges forward, lights come on, and rpms are higher)... take it home with my head low, check the codes, same codes as above.
So that's where I'm at and lost. I've read that PCV valves have cured similar issues, but I can't receive word from RIPP if the PCV valves are RIPP specific or just a plain old Jeep JK stock PCV valve. I also heard that MAP sensors have caused this issue. I've also read that new EVAP canisters have cured this issue.
Can anyone give me some insight or direction? I don't mind replacing the PCV valves bc they are relatively inexpensive, but I can't find out if they're stock or RIPP specific. I don't mind buying a new EVAP either since they're $50. I would just like some words of wisdom before I start replacing parts. This is my first time having a car payment, and at this point I'm half tempted to fix it and sell it to buy a truck. I'm pretty disappointed having this bug already when my 98 Jeep has been running stellar for 15 years. And before I get ripped a new one, I know and understand the risks of buying used cars. I talked to the guy last night and he said he had a similar issue when he left the gas cap loose when the throttle reset did the trick and never gave him a problem again.
Sorry for the novel, kind of at a stand still without hearing from RIPP about the PCV valves. I make my first payment tomorrow and this is not what I wanted before my first payment.
For what it's worth, I have the scanner which can read engine management numbers, I'm just not sure what numbers to look at.
Thanks in advance.