Vauxhall Vectra C 2.2 SRI 2006 - Hoping for some help

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Fri 26 Jul 2013 11:07
Vauxhall Vectra C 2.2 SRI 2006 - Hoping for some help - Kings2580

Hello

My Vectra has recently started to jump/misfire slightly when changeing gear and accelerating it jumps a couple of times then carrys on fine until i change gear accelerate then it jumps again then carrys on fine it runs nearly as normal aprt from jumpy when accelerating

when accelerateing normally its as above but if i accelerate harder the engine management light comes on and car slows down but after i turn engine off the EMS light turns off and car go back to normal apart from slight jumping desribed as above

Ive took car to two garages to be coded and neither registerd a fault even with engine running and EMS light on

ive had sparkplugs changed and garage has stated it might be a coil pack but i would have thought that would have shown up on EMS with code ? i dont really want to change if not needed

Does anybody have similar experience or can offer any advice ?

thank in advance for any replys

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Fri 26 Jul 2013 15:08
Vauxhall Vectra C 2.2 SRI 2006 - Hoping for some help - Peter.N.

Sounds like coil pack/s. When you accelerate hard the pressure in the cylinders increases, this makes it more difficult for the spark to jump the gap. You may be able to find out which one by closing the plug gap on one cylinder at a time, reduce it by 1/3rd and see if the fault dissapears.

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Fri 26 Jul 2013 16:22
Vauxhall Vectra C 2.2 SRI 2006 - Hoping for some help - Kings2580

Sounds like coil pack/s. When you accelerate hard the pressure in the cylinders increases, this makes it more difficult for the spark to jump the gap. You may be able to find out which one by closing the plug gap on one cylinder at a time, reduce it by 1/3rd and see if the fault dissapears.

Hello peter thanks for answer im a novice when it comes to these things and this is probably a daft question but could you explain what you mean by

You may be able to find out which one by closing the plug gap on one cylinder at a time, reduce it by 1/3rd and see if the fault dissapears

as im really not sure i know how to take couil pack of adn remove spark plugs as mechanic friend showede me when change plugs incase i need to replace it

thanks again

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