Capito2007

^ yea dude i cant figure out wtf it is. when you attempt to drive during this, does the car jerk back hard like its stalling out? thats what mine does.

and my boost at idol reads 25.
i really would like to avoid putting the stock intake back on.

if indeed the throttle body/vaccum are the problem (only happens when it rains) then hopefully that should fix it. if not then i have no f'ing clue and i will result into putting the stock intake on. im going to go in for that "tune" like they spoke of above (what does this involve) {im not very car literate} also, i will see about getting the throttle sensor replaced/checked

cmatthewb101

iTrader: (4)

No of it makes sense. If it were a bad vac line, it wouldn't only do it during warm up. (atleast I would think) same with the throttle body. i dunno. I'm keeping an eye on this thread to see what happens.

Chevycobaltss3

iTrader: (2)

OK so think (Only happenes when it rains) What is rain? ITS WATER so when it rains your car can suck up water into the intake system ! Even with your setup. A maf uses fine wires to tell the air coming in by sending voltage that wil warm the wires up and the air coming in cools it down. So if water splashes on the maf or dirt gets on there itll skew the maf. so if its not maf then you either have a issue with a elctronic device like the coil packs or a other sensor... or your ecm is going out

Capito2007

could it have to do with my volume air flow sensor?? it came up code P0101 - MAF OR VAF i changed my MAF sensor didnt fix it. a guy i work with squeezed on a air hose while it was messing up and it completely shut off the car. could this be my problem?

Chevycobaltss3

iTrader: (2)

Ure volume huh?

JetBlackSS

iTrader: (5)

i have same problem. replaced tb, maf, and just put on a pre-filter(hydroshield). I also know that water drips on mine from the headlight and my fender liner doesn't line up right and am getting water in there too. I also taped around the maf and where the tube connects to filter to keep water from trickling into those spots too. I only show vacuum of like 8.9-9.5 at idle.

insylem

You have an 07 ss/sc? Thats with the LSJ Engine, LSJs tend to idle hunt when their Throttle Bodies get dirty. Not sure why yours only does it when its wet. Try cleaning your throttle body though. It wont hurt. Also, I run K&N's Drycharger on my ZZP 3" Intake, in pouring rain... zero problems. But I do avoid puddles like the plague.

Chevycobaltss3

iTrader: (2)

Vacuum of 9-10 is very bad br vwey bad. Means the engine is unhealthy. Put a mechanical gauge and verify ure compression.

JetBlackSS

iTrader: (5)

All I have is an aeroforce scan gauge. The manifild psi is what I'm referring to. The car runs fine and pulls hard other than same issue as op. The only diff with mine is it can just sit in rain and will start bucking when I drive.

Chevycobaltss3

iTrader: (2)

So at idle your running 9 mpsi? Or are you running -9mpsi (manifold pressure

JetBlackSS

iTrader: (5)

-9 at idle.

Chevycobaltss3

iTrader: (2)

nifold vacuum should be between -24 ---------- -17/-16 Put your interceptor you boost itll still read vacuum, just to make sure your engine isnt hurting!

JetBlackSS

iTrader: (5)

Only other setting I have seen is supercharger psi. The interceptor was in the car when I bought it so I have no manual or instructions. It sems to read boost fine. I see peak boost around 16 psi.

Chevycobaltss3

iTrader: (2)

well -9 is very very very bad bro.. get a mechnical gauge if you cant figure the parameters out