any ideas

[scoobyjoe2007]

every now and again when im driving, the car seems to be jerking.... not very bad.......just a slight bit that you can feel...

its like a miss.....

no CEL so not sure what to look for.... any ideas where to start

 

[scoobycolm]

knock sensor
but usually get cel
sounds the way my car was when it was knock sensor
connect the 2 block connectors together and check for faults http://www.scoobypedia.co.uk/index.php/Knowledge/ReadingECUCodes