jolting under load

2002 VOLKSWAGEN GOLF
95,000 MILES
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THOMASCLARK
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Hi I have a golf gti and its jolting under load and while boosting any ideas on what this could be any help would be fantastic cheers.

Hi I have a golf 25th anniversary and it's jolting under load and while boosting any ideas on what this could be any help would be fantastic cheers.
Sep 16, 2012 at 3:20 PM
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ASEMASTER6371
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check the plugs wires and coil.

how long has it been since it has been tuned up??

Roy
Sep 16, 2012 at 3:21 PM
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THOMASCLARK
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No it's completely standard and it's only started since yesterday other than than the car is fine no smoke no knocks or anything, Also the temp is fine so nothing sinister apart from this to be honest and the mpg has gone down a tiny bit that's it cheers.
Sep 16, 2012 at 3:26 PM
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ASEMASTER6371
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ok, i would start with basics. have the plugs, etc checked and have the car serviced.

Roy
Sep 16, 2012 at 3:28 PM
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THOMASCLARK
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Ok brilliant will get that done asap just panicking it could be bad news but I've always serviced her and never been shy on spending money on the best and original vw parts I can so fingers crossed she will be ok thanks again.
Sep 16, 2012 at 3:34 PM
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EXOVCDS
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Aside from the usual / basics... could be a bad diverter valve

It's all guesses unless one is working on it.

Thomas
Sep 16, 2012 at 5:34 PM
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THOMASCLARK
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Would this cause the engine management light to come on.
Sep 16, 2012 at 5:49 PM
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EXOVCDS
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Yes, it will set a boost code or MAF code.

If the light is on, start with a scan... so you don't waste $ on
plugs etc.

Thomas
Sep 16, 2012 at 5:53 PM
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THOMASCLARK
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Ok brilliant thanks for your help will get on it tomoz.
Sep 16, 2012 at 5:55 PM
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EXOVCDS
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Me again... just uploaded a video showing how you can test the
diverter valve if you have a vacuum pump.

http://www.youtube.com/watch?v=4yIejRu74qI

Thomas
Sep 16, 2012 at 10:46 PM