erockxp

So I keep getting this dang code system too rich bank 1. Replaced upstream O2 sensor, fuel injectors, spark plugs, MAF, cleaned the throttle body too. Any suggestions on where to go from here would be much appreciated. Starting to think a professional diagnosis is in order. Help!

erockxp

Bump for any suggestions...

Jesse

iTrader: (4)

Mods? Tuned?

erockxp

only mod is an intake. just plain old chevy ****!

Superbolt

I am just go a throw this out there but you try replacing ur evap valve in ur engine bay? Or the one in ur carbon Box...the one under the hood is cheep the one in the back cost more because you have to bye a new wire harness....just sayin because of open loop and closed loop is evap.

Jesse

iTrader: (4)

That may be the problem. Generally aftermarket intakes, especially on NA cars, make the car run rich at lower RPM and more at higher RPM.

Superbolt

My car wouldn't start after putting gas in it...had to crank it like three times to get it to start if I remember correct the code was p0172 but not sure I replaced both just to make sure never had a problem after.

Superbolt

These cars(Chevy) are famous for evap problems

erockxp

Thanks for all the help! This is the PCV valve or something different? Never had to replace one before so a little unsure.

Jesse

iTrader: (4)

No, evap is a fuel related system. The evap purge valve is connected to your valve cover via bracket on the drivers side. I can't post pics on this phone but you can google "cobalt evap" and it'll show ya.

erockxp

Well, I took the Balt to the best tech I know and let him know of the problems and parts that have been replaced. He gave me an oh crap look and said it won't be today. Hoping for the best...

erockxp

Could it be the ECM?