Mates Fiesta Flame 1.4L FXJ engine has failed MOT.
High idle 1
CO 0.38 (0.2 limit)
HC 74 ppm (200 limit)
Lambda 0.996 (0.97 - 1.03)
Hige idle 2
CO 1.11 (0.3 limit)
Was told he needed a new cat £300 and they might damage the 02 sensors
Front O2 sensor reads near 0.9V at idle and cycles 0.1V 0.9V at high idle.
Rear O2 sensor 0.4v cold. Rises slowly when held at very fast idle 4000rpm
to >0.8v. Drops rapidly to about 0.1v when throttle snapped shut and then c
limbs slowly back to >0.08V. Is this slow response and initial bias correct
The car is rarely used outside 30/40 limits and owner drives nicely. Last M
-way trip was Xmas. The "Italian tune-up" is no longer an option as the MOT
expired last week.
Car had a misfire problem about 2 years ago, had to replace plugs and coil.
(using google groups as not at home)
- posted 2 years ago