Reachej
GOLD Star
1994 FZJ80
So I've been chasing down rough idle stuff for quite some time.
Things I've done:
-Rule out vacuum leak
-Distributor cap and rotor
-Plugs and wires
-Fuel filter
-Fuel Pressure Regulator
-VCV
-Clean MAF
-Clean Throttle Body
-PCV
-Delete EGR
-I'm sure I'm forgetting some stuff, will edit
Anyway the rough idle is better than it was but now it's throwing code 25 intermittently. The roughness is also intermittent but doesn't necessarily correspond to the CEL. Sometimes it feels like it's not firing on all cylinders. Sometimes it has more power than it ever has in the 14 years I've owned it. Usually when it is running well it is after I've been driving it for more than 20 min or so. Any ideas? O2 sensors? Fuel injector? I'm kind of a teach myself as I go kind of guy and could use a push as to what to try next. I have tried to read the other related threads but it is the intermittent part that seems a bit unusual.
So I've been chasing down rough idle stuff for quite some time.
Things I've done:
-Rule out vacuum leak
-Distributor cap and rotor
-Plugs and wires
-Fuel filter
-Fuel Pressure Regulator
-VCV
-Clean MAF
-Clean Throttle Body
-PCV
-Delete EGR
-I'm sure I'm forgetting some stuff, will edit
Anyway the rough idle is better than it was but now it's throwing code 25 intermittently. The roughness is also intermittent but doesn't necessarily correspond to the CEL. Sometimes it feels like it's not firing on all cylinders. Sometimes it has more power than it ever has in the 14 years I've owned it. Usually when it is running well it is after I've been driving it for more than 20 min or so. Any ideas? O2 sensors? Fuel injector? I'm kind of a teach myself as I go kind of guy and could use a push as to what to try next. I have tried to read the other related threads but it is the intermittent part that seems a bit unusual.
