Ran my balt over to Autozone.
Got some codes for you guys.

P0030
P0036
P0102
P0443

Mods I have are Megan cat-back exhaust, eBay Cold Air Intake.
I don't think my suspension would throw any codes.

Thanks in advanced.

 

I can has these codes?

 

Modified Exhaust now CEL's - P0030, P0036, P0102, P0443 - Solution Inside - Cobalt SS Network

Weird this guy had the exact same set of codes. Reading that thread now.

Multiple people fixed it with this

"I had the same thing happen to me when I put my hahn cat back on. Check your ems fuse under the hood(10amp).If it's poped you have a straight to ground short on youf o2 sensor. Look for bare wire then tape it up.My would do it when I made a right hand turn and the exaust would swing left an touch the heat shield and pop a fuse. Good luck"

My car service fee is $20 a minute. Luckily I don't charge you for the first two minutes.

 

Lmao, glad I avoided the charge.
Funny that that guy did indeed have all the same codes I do with a modded exhaust..

On a serious note, I will check for that fuse. What does the bolded part exactly mean?
Could you give me a better understanding?
I appreciate your help.

 

I think he is saying that one of the wires to the 02 sensor is grounding out against metal and shorting the circuit which in turn is blowing the fuse.

So look at the EMS fuse, if it's blown, you likely have an exposed 02 sensor wire or it's rubbing on metal.

Go back under the car and make sure everything looks correct. Make sure the 02 sensor wire is not flopping around or anything.

Of course after you check the wiring you would need to replace a blown fuse.

 

Figured I'd revive my old thread instead of remaking a new one.
I still have these codes.

I got the car up and checked the end of the o2 wire itself. Didn't really see any bare wire at the end of it, but wrapped the whole thing in tape anyway.
I went ahead and replaced the emissions fuse, like the thread above says. From crank to idle, it's fine. But when you blip the throttle there after, the car has a really hard time idling. RPMs would bounce up and down for a little until it would go so low the car would die/stall. The throttle body isn't dirty, as far as I know. I cleaned it last month.
Only way to keep it alive was give it gas.
Pulled the emissions fuse and it was still intact.

With the emissions fuse out, it idles perfectly.

Any suggestions?

 

Having a hard time diagnosing this myself.

Bump for suggestions.

 

I also have a check engine light , 10 codes in all :/ . Now I did find the rear o2 sensor wire broken and rubbed against frame ... But I can't seem to locate this ems fuse everyone is talking about

 

It's under the hood where fuse box is. Lift cover over it will be marked ems I believe if you flip the fuse box cover. It's a 10 amp fuse or 15 amp one of the 2.

 

Damn. For the rear o2, did you check the wire from the sensor all the way back?
EMS fuse is towards the bottom of the fuse box. It's marked "EMS" or close on the back of the cover.

It's a 10 amp.

I already replaced the EVAP Purge Solenoid, and it idles for a little longer better, but then sounds like it's cammed and idles like ****. Smell is definitely rich too. Still not sure what's going on. Might have to check the first o2 and see if it's grounding out, but my EMS fuse isn't popped.

I may go to the dealer and just get this done with.