Hi All,
My cars been running a little crazy latley and it finally spit out a code. I have a Code 45 O2 Rich. Any ideas or thoughts before i get started on the basices. Anyone out there ever had this code if so what seemed to be the problem? Please any help would be nice

 

Could be, too high fuel pressure. As you have an adjustable regulator, what is the pressure? Also, a leaky injector, or an injector stuck open. Try to get your hands on a manual, and troubleshoot the problem.

 

My fuel pressure was 52 WOT. I bumpped it back to 49 at WOT. Still the same. Injectors hold. I gutted my MAF screen ( micro tech) weeks ago, I think thats it. I'm gonna hit up Advance auto and return it. Good thing I kept my screen, know i can pop it back in. I figure it out datalogging last night my blms where dipping in the 91 range that. i'll try MAF first
thanks

 

Mine did something like that when i took my screens off a year or two ago. It actually made the car stall once. After resetting the ecm it never happened again.