hi there i have an astra 1.6 sxi twinport, when im going along at 30 - 40mph in 3rd or 4th, its jerks quite bad n its quite frustrating and i cant think what it could be....can anyone help? Id appreciate it very much
Is it a particular engine speed (RPM) or road speed?
Its around 3000rpm and yes could be coilpack, ive done spark plugs.....a vauxhall mechanic said throttle body might need a clean cos could be clogged up....its fine at main road speeds
