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Vauxhall Corsa 1.2 Design 2008 - Rough Idle, burning smell, loss of power - babysquire
Car starts fine, stopped at junctions or parked after driving very shaky idle. Burning smell after driving. Loss of power when driving and also when pulling away, can be driving along at 40mph then speed suddenly drops to 20mph without taking foot off pedal. Constant feeling of being pulled back whilst driving. Pulling away at junctions and roundabouts complete nightmare, as if 2nd gear doesn't exist. No acceleration, no revs, car just trundles along, have to drop back to 1st and over rev to get it moving. Drives better at 40mph in 3rd gear than it does in 4th.Only bought it on thursday, taking it back this thursday to have 'checked over' by dealership. Have read it could be Coil Packs or MAF and a friend mentioned could even be the clutch??
Vauxhall Corsa 1.2 Design 2008 - Rough Idle, burning smell, loss of power - elekie&a/c doctor

Coil pack fault would give rough idle and lack of power.Clutch fault would not give poor idle.There is no maf sensor on these.

Vauxhall Corsa 1.2 Design 2008 - Rough Idle, burning smell, loss of power - Manatee

A coil pack fault will also cause a misfire and result in a very hot catalytic converter, which might account for the burning smell. It will also do the cat in eventually.