okay so only had the car for 3 months and founf out the EGR valve needed to be replace was told it was not absolutly vital to do it at the moment. So I didnt but I noticed it has started missing. Now I am got the EGR valve and ready to put it on but i pulled the codes with a scanner and it spit out 8 different codes:

P0300x2
P0138x2
P0131x2
P0404
P1133

I know 404 is the EGR valve not working but what the hell is all the other stuff is it all tied into the EGR valve? I have to keep egr and air as I am getting ready to move to a area where they check emissions and need to see how hardnose they are about it. So any ideas is this all connected or do I just have a boatload of issues?

Car is a 98 M6 SS only mods are cat-back flowmaster exhaust

 

anyone?

 

P0300 Random/Multiple Cylinder Misfire Detected
P0138 02 Sensor Circuit High Voltage (Bank I Sensor 2)
P0131 02 Sensor Circuit Low Voltage (Bank I Sensor I)
P0404 Exhaust Gas Recirculation Circuit Range/Performance
P1133 HO2S Insufficient Switching

Hope this helps ya, these could be all tied to the EGR being messed up, replace it and clear your codes either using the scanner or disconnecting the battery and see if any come back.

 

get your EGR stuff fixed and see what else if fixes. of course after fixing the egr, clear the codes & wait to see what comes back

 

EGR is fixed and no longer spitting out that code but now its loading up and missing so much it cant even push itself in 6th. the o2 sensor that its saying has issues is brand new no bad wring all the grounds are tight I am totally lost. Tomorrow I guess it will goto the stealership