mudnsnow
New Member
- Joined
- Nov 30, 2007
- Messages
- 216
- Reaction score
- 0
- Points
- 0
- Age
- 44
- Location
- Matane QC CA
- Vehicle Year
- 1983
- Make / Model
- Ford
- Engine Size
- 5.0L EFI
- Transmission
- Automatic
Here my problem.
When i start my 5.0 Ranger in the morning the engine run way too rich. The engine misfire on a lot of cylinder(Run very rought). When the engine begin to warm up the engine stop misfiring but still run very rich.I think the misfire stop when the cpu enter in closed loop. I've checked a lot of thing but i've found nothing wrong.
Fuel pressure 30 psi(regulator have 1 year)
Ignition timing is ok(10 degree)
Engine Coolant sensor brand new.(last week)
o2 sensor replaced last year
No KOEO
1 KOER code(42 Lack of heated oxygen sensor switch, Rich bank)
I have gas in the engine oil.(run very rich)
At idle on the gas analyser the engine run around 1000 ppm of HC and the truck have a very bad gas milleage(less then 4MPG).
Anybody have ever run throught this problem. Or someone have an idea what to check next ????
All the engine/trans/wiring/sensor came from a 89 Bronco FS 5.0L MAP system(no Mass air flow)
When i start my 5.0 Ranger in the morning the engine run way too rich. The engine misfire on a lot of cylinder(Run very rought). When the engine begin to warm up the engine stop misfiring but still run very rich.I think the misfire stop when the cpu enter in closed loop. I've checked a lot of thing but i've found nothing wrong.
Fuel pressure 30 psi(regulator have 1 year)
Ignition timing is ok(10 degree)
Engine Coolant sensor brand new.(last week)
o2 sensor replaced last year
No KOEO
1 KOER code(42 Lack of heated oxygen sensor switch, Rich bank)
I have gas in the engine oil.(run very rich)
At idle on the gas analyser the engine run around 1000 ppm of HC and the truck have a very bad gas milleage(less then 4MPG).
Anybody have ever run throught this problem. Or someone have an idea what to check next ????
All the engine/trans/wiring/sensor came from a 89 Bronco FS 5.0L MAP system(no Mass air flow)