My s/c runner stalls, when I punch it from a rolling start, or when it's cold. It also did it when it was warmed up good. It happened twice and these lights light up (vsc off, vsc trac & check engine).
I have not got the codes pulled yet but i was reading about the p0446 code, every now and then this problem happens with stalling.

I asked the dealer that installed it and they said, "yep it's the vsc, that's what happens when you have a supercharger and punch it, but bring it in and we will pull the codes". Is that B.S or not? I'd say yep to that..

Every now and then the vacuum hose from the s/c that goes to the boost gague blows off, but was wondering if there is a other type of vac problem going on AND Not the VSC.

 

P0446 = Evaporative Emmission Control System Vent Control Circuit Malfunction.

Possible issues are:

Open or short in vapor pressure sensor curcuit, cracked charcoal canister, problems with vacuum hoses, along with some other related things.

Please check to ensure that your gas cap is securely tight. This is a common problem and that could be it. You must go into the stealer to have them clear this code. if you have a local Autozone in your area that can clear the code, have them to it as well. it must be a obdII scan tool to clear it though.

If it is not the gas cap, then it must be sensor. I had a bad evap code come up as well and it was not due to the gas cap as the dealer said but rather a bad evap sensor on the throttle body.

 

Have you secured those vacuum lines with zip ties as was suggested?

 

Not yet. I understand about the codes but will those sensor of vac problems cause it to stall? I just can't belive the dealer told me it was the vairable skid control and they make other mods like ecu upgrades. Well thats what warrntys are for.

 

See if this helps. Its a long thread but pretty informative.


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