Petrol Diagnostics: Jaguar 3.2 XJ Sport 1995 - MOT Emmission Failure, High CO

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Jaguar 3.2 XJ Sport 1995 - MOT Emmission Failure, High CO Archived Message
Posted by Peter Warman <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=UKAT5501' width='330' height='300' border=0 style='border:none;'> on September 12, 2005, 2:35 pm
Hi All
Jaguar XJ Sport 3.2 1995 Auto 88,000 miles
Chass: SAJJPALG3BJ761327
MOT emmission failure on high CO
Drives OK, with no apparent loss of power or misfire.
I have carried out a few checks, but dont see many of these, so a pointer would be great
Emmissions at fast idle:
CO 10.36
HC 357
CO2 7.93
O2 1.08
NOX 52
Lam 0.75
Emmissions at idle:
CO 8.00
HC 307
CO2 9.56
O2 0.80
NOX 0.0
Lam 0.80
Vacuum at idle 19.5 in/HG
Vacuum at fast idle 21 in/HG
Coolant temp: 93deg C
Air flow rte from MAE 0.04 g/sec at idle
Air flow rate from MAE 0.21 g/sec at 3,000 rpm
Short term fuel trim bank 1 24.2%
Long term fuel trim bank 1 -10.2%
Short term fuel trim bank 2 24.2%
Long term fuel trim bank 2 -10.2%
O2 sensor at idle bank 1 stays at 0.075v
O2 sensor at 3,000 rpm bank 1 stays at 0.100v
Intake air temp 42degC
Any thoughts welcome
Peter

Message Thread:

Jaguar 3.2 XJ Sport 1995 - MOT Emmission Failure, High CO - Peter Warman September 12, 2005, 2:35 pm
replies - Peter Warman September 12, 2005, 3:50 pm
replies - UKAT2749 September 12, 2005, 4:03 pm
replies - Peter Warman September 12, 2005, 4:47 pm
replies - Graham Bullock September 12, 2005, 5:30 pm
replies - Tony Sefton. September 12, 2005, 6:47 pm
replies - andyhyoung September 12, 2005, 6:51 pm
replies - Peter Warman September 13, 2005, 3:06 pm
replies - Andrew west September 14, 2005, 9:37 pm
fixed - Peter Warman September 16, 2005, 10:37 am