I just recently did a cam kit....after about a week of perfect driving i realized one of my plug wires burned through.....with the code of the 7th cylinder missfire i realize there are two more codes....P0657 Actuator supply voltage a circuit open and p0100 MAF circuit a malfunction....now that i changed my spark plug wire my car runs a little bit better and im not getting the 7th cylinder code but its still not running perfect....do you know what i can do to troubleshoot....by the way my engine sensor 20 amp fuse keeps blowing as well.....

 

P0657 is not a valid DTC for an LT1 f-body.

I would check your MAF connection and make sure you have 12v power on the pink wire.

 

why would i be getting that code then? what do you mean by 12v power on the pink wire.?

 

Where did you get that code? Did you see it on a scanner? I don't know of any "actuator" or what car it would even pertain to.

...the pink wire to the MAF. Check it for 12v with the key on.

 

yeah i got it first when my car was missfiring....it was shooting off 3 codes (MAF,missfire,and Acutator supply voltage a circuit open).....now that my spark plug wire got changed i dont believe its missfiring but ne thing less than WOT my car runs like garbage..and i believe the MAF issue is going hand and hand with blowing my engine sensor amp 20 fuse..when this fuse blows my reverese celnoid goes which pretty much makes it hard for it to go in reverse...

 

Yes, the engine sensor fuse feeds power to the MAF, O2s, skip shift and reverse lockout. Since you have headers, I would suggest looking at your O2 harnesses. If a power wire gets burned and grounded-there goes the fuse.

 

okay ill look into that....thanks!