First post! Long time watcher of many threads.

Had a problem with a 53 Plate 70k ST170 showing engine management light and noticeably miss-firing at all times. Still pulled quite well though.

Fault code showed miss-fire number 3.

Changed the coil pack, plugs (gapped correctly), leads, injectors and re-set the ECU about three weeks ago and it's still happening. Now (last night) it's randomly showing two error codes, miss-fire number 3 and also multiple random miss-fire 3 and 4 and stalling when coming to a stop.

It's driving us nuts. Got garages properly confused with it, wondered if one of you guys could help?

Cheers

 

could possibly be an earthing problem.
does it do it at all rpms including idle? and its it a miss every time? is it goes ok i guess not