If that code number wasn't correct, I know that the actual code was "Lean Bank 1"

 

Holy crap I read that completely wrong, I'm sorry

My head wasn't right this morning apparently.

Running that lean, if you can't find a vacuum leak anywhere, check for clogged injectors or a clogging cat.

 

Thanks, I had thought about replacing all the injectors since they are old and have 282,000 kms on them. I did some more research on the grand prix and impala forums and I am going to recheck everything I've done over the past couple years, just to be safe. I replaced the MAF before I had the OBD2 software so I will start playing with things while keeping an eye on the readings. If anyone has more ideas keep them coming!

Thanks

 

I read today that the EGR tubes can crack and cause a major, yet hard to find vacuum leak. I'll be checking that tonight.

 

Could your vacuum line from your fuel pressure regulator have come off? (something that might be overlooked)

 

welcome back 6 month old thread!