Everything has been fine untill I got into the car today I have no boost, maybe .06psi tops and 125hp tops however the fuel psi still tops out near 2k and running an air fuel ratio around 15 under wot(no boost). All of this was read off of my RPD and I clearly have no idea what it means lol. There are a few possibilities to the cause, it has rained heavily the past few days and i cannot rule outa boost leak, however everything is visually intact. The odd thing to me is that although it's been raining for 3 days, today it was sunny and the reall odd thing is that not only could Autozone not read the code but nor could a tec2. I also could not clear the code as I was not able to read the computer(getting power but not able to connect). I have never had his problem on any car before and the tec2 is updated though 2012. Why are your thoughts?

 

If it rained, then your filter probably got wet and also got your MAF wet and dirty. If scanners won't connect to your PCM then it could be corrupt.

 

^^true, also might wanna look at getting a tune even though it's just 1 mod. The Hahn CAI is a lot more air coming into your car. But def sounds like a problem with your MAF.

 

Cleaned the maf and all of its connectors to try to rule that out.

 

for the obdII thing is your cig lighter working. if not check the fuse for that under the hood. if that fuse is blown you wont be able to connect. it uses the same fuse for both the obdII and the lighter.

 

if your Tech2 wont connect youve most likely got an internal ECM performance code, or a communication error.

 

Well after letting the car sit for days with the battery disconnected the ECM can now be scanned. Not sure why that made a difference, I'll just call it black magic. The infamous P0101 MAF code came up and is the only code that is logged. While the battery was off I put a brand new MAF on that I picked up from Autozone. I will add that I noticed that the turbo sounds like the turbo off a semi truck. You can hear it whistle and increase in pitch an increase of rpm and a psh when I shift. Odd thing is the boost will max out at 0.6psi.

 

P0101 is from the MAF and/or filter being wet, probably didn't need a new one unless it was submerged

 

This morning started the car started to drive then the "idiot light" started flashing. Haven't had the time to scan it to see if anything has changed. Though I have not checked it yet I'm starting to wonder if the actuator is broken.

 

This exact scenario happened to me. Quick history on my car... OEM intake (no problems, obviously) to AEM test fit CAI. No problems. To K&N test fit CAI. No problems. Track day at Cali Speedway (w/ K&N) No problems. The next day getting on the freeway, aprox 75% throttle boost up to 13psi then dropped to 1-2psi, A/F ratio about the same. 15 w/ no adjustment. NO CEL. Didn't scan codes, just pulled Neg battery cable for aprox 20min to erase short term memory. Attached Neg cable, full boost, no problems. Car's been fine since. It seems drastic changes in air flow "confuse" the ECM. Clear codes and disconnect Neg battery cable. Re-attach cable and start car. It'll idle rough for aprox 5 min until ECM re-learns and compensates for different air flow through engine. Drive around normal for a day or so and the ECM should adjust to the difference. That's my personal experience. Hope this helps. Good Luck.

 

Cleared the p0101 code now when I start the car it simply stalls, won't idle, might bounce rpm once before stalling out. I can keep it running if I keep my foot on the gas and flutter. Air/fuel ratio holds at 14 for about ten seconds then drops out to about 8 or 9 then begins to sound and smell funny. I have the stock intake on.. I'm not sure what's going on now. There are no codes comming up.

 

Please help bump

 

So far the dealer changed MAF, MAF wiring, spark plugs, and battery with no change. The bill is up to $600 and they have not found the problem. I'm really getting frustrated at this point.

 

simple check.. put you stock intake back on.. if it doesn't do it then.. then you need to ditch the intake or get a tune

 

This happened to me with my intake, car went into limp mode 5 times in a 6 mile radius. I put the stock intake back on and wait till im tuned.

 

Here's a recap of the timeline...
Rained for three days, rain stops, next day(sunny) throws p0101 code and 0psi. Clear code, car starts, kicks up rpm's as normal then stalls out immediately. Start car again, give it gas to keep it running but still wants to stall a/f drops to 8 or 9 and begins to smell funny(can't really describe it) Put stock intake on when it wouldn't start thinking that might be throwing it off. Still wouldn't stay running. Disconnected the battery, reconnect, wouldn't stay running. Disconnected the battery again, replaced the MAF, still no change. Dealer replaced battery, MAF(I put the original MAF back on), MAF wiring, and my broken intake tube(for the third time), $600 later, no change.
Sorry about the post being choppy. I am posting from my phone since my MacBook died today.

 

Dealer still has no idea what's wrong. Still won't start. No codes, no boost leak, and the PCM is ok. Car will start but wants to stall out. They can keep it running if they pump the gas but bogs hard. After about 30 seconds the a/f ratio drops from about 12-14 to 8-9. Anyone have any ideas?

 

is your 100% stock intake in the car and together 100% and NOT broken/missing anything in any way? If your intake is broken/missing pieces it's letting in unmetered air!

 

just throwing this out there what about the pcv line.

 

They have fixed the intake under "warranty." the stock intake is complete in factory condition and they have checked all charge piping and inercooler for leaks including doing a test for leaks. Not sure about the PVC line. I asked them to force a code for p0101 and the misfire code and it started and they were able to drive it but no boost. As soon as they cleared the code it died. Not sure what's going on with it. I contacted a lawyer about the possibility of the car is a lemon and although he was willing to try she said that I don't have much of a case yet. Not sure what all has been done. Please help

 

ionit2004,

Reading through the thread, I'm sorry that you've had such a difficult time working with your dealership on getting this diagnosed. Have you gotten a Customer Assistance case set up already? If not, please get in touch with me via Private Message (include the last 8 digits of your VIN) and I'll check into things.

Best,
Sarah
GM Customer Service

 

Get a hydro shield, this same thing happened to me, rained hard the filter got soaked from the water running down the crack of the drivers side and dripped down onto the filter and was pulling water across the MAF and stalling the car.

 

Dealer told me that car was fix and ready to be picked up. Signed the paperwork, paid, and they pulled the car up. I got in the car and.... The service engine soon light was on so I gave it back to them. The tech scanned it and said it was comming up with a MAF code (not sure of the number of the code) he installed a new one. The rpms fluttered then the car stalled and wouldn't start. After a few tries he was able to get it to run. By 4pm he left for the day. On the bright side after some begging they are giving me a free rental. This begins week number four and finally have a rental that they are paying for. I have a feeling that they will have it fixed this week lol