Help? OBD-II codes.

[Moses]

1. P0171 - System too Lean - Bank 1
2. P0174 - System too Lean - Bank 2
3. P0300 - Random/Multiple Cylinder miss fire
4. P1133 - Manufacturer Control Fuel/Air Metering
5. P1153 - Manufacturer Control Fuel/Air Metering
6. P0171 - System too lean - Bank 1 ( PENDING )
7. P0300 - Random/Multiple Cylinder miss fire ( PENDING )
8. P1133 - Manufacturer Control Fuel/Air Metering ( PENDING )
9. P1153 - Manufacturer Control Fuel/Air Metering ( PENDING )

[vanbibber]

Re: Help? OBD-II codes.

all these from your car?

[BLLDOGG]

Re: Help? OBD-II codes.

what year and such is your car?

[BLLDOGG]

Re: Help? OBD-II codes.

Do you have an exhaust leak? Didn't you just swap engines or something like that? check for harness damage for the 02 sensors or pcm. check pcm and engine grounds. Do you possibly have a vacuum leak? How is your fuel pressure? did you recently fill up?

I would need to hook up a scan tool to help much

[Moses]

Re: Help? OBD-II codes.

'98 Pontiac Firebird, 3.8 V6 ( obviously ), no, engine is the original.

yes, ALL 9 is from me.

[vanbibber]

Re: Help? OBD-II codes.

first things id look for are vaccum lines not connected.

have you changed out the o2s at all?

[Moses]

Re: Help? OBD-II codes.

I've only had the car for about a month, so no. One of them is an O2 sim, where the cat is. Should I try replacing the O2's? By the way, since I erased the codes, none has come up at all, but the car has a small miss still.

( Update on my antifreeze btw: I'm barely leaking at all. The previous owner put silicated antifreeze and mixed it with dex cool, after my flush, I haven't added antifreeze yet.

[vanbibber]

Re: Help? OBD-II codes.

its a higher mileage car right? might want to go ahead and change them out then and maybe plugs also. use oem o2s like ac delcos not pos bosch ones.