Surge or Miss 2003 Disco II
 

Hey all I seem to have what feels like a fairly good miss or surge only happens about 40 mph ish. I don't notice it with the sport mode on I have been driving with sport mode for a while took it off the other day just because got tired of the green s on dash. thats when i noticed it, Other factors about 70 miles since a fill up (93). Check engine light 0441 / 0445 the 445 was new i cleared them but still have the miss. Been trying to find a vac leak on the 0441 for a few weeks no luck. Any ideas? I hate to think tranny problems oh and the mileage is like 79K

Thanks

How long has it been doing this?
Have you used this gas station before?

Could be a bad purge control valve.