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So it's another failure at the Emissions facility with my 95' 3.4L Bird.
In the past 2 weeks I've performed the following to try to pass by lowering my Nox levels:
New CAT (With the new CAT, I'm getting hotter on the inlet and colder on the outlet of the CAT using my infarred temp gauge (Difference of around 135F or slightly greater))
Checked the following sensor readings during driving and fully warmed up:
MAP sensor (1.6v at idle/cruise - 4.25v at almost WOT)
TPS stays consistent to pedal position with no fluctuations
EGR solenoid (under light acceleration, Sol.1 and 2 open. Under WOT all 3 open but during cruising at 1500rpm, all stay closed. Cleaned all passages as well with carb cleaner and nylon brush)
02 Sensors (bosch) replaced last year. Bank 1 and 2 continue to fluctuate between .090-.870v during any acceleration/rpm range and when at a cruising rpm.
Last notes:
At cold, she idles smooth but at full warm up and AF ratio switches to 14.7:1 (holds steady) she has a very slight, slight miss. No one else seems to see it in my family, but I notice it.
When fully warmed up, she hangs for maybe 2 seconds longer than usual before falling back to idle during blimps of the throttle.
Other than this, she runs great, fuel mileage is excellent (21 city, 27 freeway) but I feel she still is running lean.
What do I start checking next? Any suggestions is most appreciated because I'm stumped at this point....
In the past 2 weeks I've performed the following to try to pass by lowering my Nox levels:
New CAT (With the new CAT, I'm getting hotter on the inlet and colder on the outlet of the CAT using my infarred temp gauge (Difference of around 135F or slightly greater))
Checked the following sensor readings during driving and fully warmed up:
MAP sensor (1.6v at idle/cruise - 4.25v at almost WOT)
TPS stays consistent to pedal position with no fluctuations
EGR solenoid (under light acceleration, Sol.1 and 2 open. Under WOT all 3 open but during cruising at 1500rpm, all stay closed. Cleaned all passages as well with carb cleaner and nylon brush)
02 Sensors (bosch) replaced last year. Bank 1 and 2 continue to fluctuate between .090-.870v during any acceleration/rpm range and when at a cruising rpm.
Last notes:
At cold, she idles smooth but at full warm up and AF ratio switches to 14.7:1 (holds steady) she has a very slight, slight miss. No one else seems to see it in my family, but I notice it.
When fully warmed up, she hangs for maybe 2 seconds longer than usual before falling back to idle during blimps of the throttle.
Other than this, she runs great, fuel mileage is excellent (21 city, 27 freeway) but I feel she still is running lean.
What do I start checking next? Any suggestions is most appreciated because I'm stumped at this point....