Hi just bought a 2000 classic and i have a problem with a misfire/hesitation at light throttle,i first checked the fault codes no faults stored, replace the spark plugs, checked the plug leads all leads between 8 - 10 kohm, coilpack is still the original, cleaned the maf sensor, took car for a drive still has hesitation, carried out ecu reset connected black plugs/ green plugs depressed throttle etc. took car for a drive after about a mile engine light started flashing fault code 32 (o2 sensor),stopped the car disconnected the plugs then drove home engine not feeling good hesitation/holding back,got home connected black plugs under dash to read fault codes now getting no faults/constant flashing any ideas?

 

Carried out some tests on the O2 sensor,checked the black signal wire from o2 sensor with a volt meter should vary between 0.1 volts and 0.9 volts at idle, mine was a constant 0.24v. Ordered new O2 sensor Thursday arrived today so i fitted it when i got home from work, disconnected battery for half hour to reset ecu had some tea took car for a run and all is well misfire / hesitation gone.

 

Sorted!