Mbeas96
Member
- Joined
- Aug 7, 2017
- Location
- Charleston
1990 745 lh2.4
Otw home the other day, on the interstate about half way thru my 30 mile trip, my wideband shows 10.0 while cruising. Thinking that can't be right as the car feels normal, come to a stop and it's not normal. Shaky idle, stinky fuel smell, black smoke out exhaust at idle, garbage fuel mileage. CEL eventually popped on after 15 minutes or so.
Get home, unexpectedly really, check codes, 113 and 232. Check fuel pressure from the rail and it was around 35psi idling, swap the amm, no difference. I noticed one of my fuel injectors was leaking from the rail, so I just reseated those and it's still the same.
Located the o2 connector and probed the set of two wires, white read ~12.6v, the black at first was bouncing around .10-.15 on a cold start, which I was thinking the o2 didn't effect air/fuel mixture till the car warmed up.
After the car warmed a little bit, ~120 F, the idle was less choppy, wideband reads ~12 idling, while the o2 voltage went down below .1
The o2 is supposed to be bouncing between .1-1.1 correct? Mine seems to be stuck on the low end of the spectrum, if I'm probing the right wire.
Otw home the other day, on the interstate about half way thru my 30 mile trip, my wideband shows 10.0 while cruising. Thinking that can't be right as the car feels normal, come to a stop and it's not normal. Shaky idle, stinky fuel smell, black smoke out exhaust at idle, garbage fuel mileage. CEL eventually popped on after 15 minutes or so.
Get home, unexpectedly really, check codes, 113 and 232. Check fuel pressure from the rail and it was around 35psi idling, swap the amm, no difference. I noticed one of my fuel injectors was leaking from the rail, so I just reseated those and it's still the same.
Located the o2 connector and probed the set of two wires, white read ~12.6v, the black at first was bouncing around .10-.15 on a cold start, which I was thinking the o2 didn't effect air/fuel mixture till the car warmed up.
After the car warmed a little bit, ~120 F, the idle was less choppy, wideband reads ~12 idling, while the o2 voltage went down below .1
The o2 is supposed to be bouncing between .1-1.1 correct? Mine seems to be stuck on the low end of the spectrum, if I'm probing the right wire.