VW Golf Mk V 140 Diesel - poor throttle response

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Fri 26 Mar 2010 12:06
VW Golf Mk V 140 Diesel - poor throttle response - willyb

Looking for ideas. Car is very sluggish with what I would describe as poor throttle response particularly in 4th gear. This followed on from a click I heard from the area of the accelerator pedal yesterday. I've looked at it ( the pedal) and it looks ok as far as I can tell ( i.e.not about to fall off!) Response is a bit better from 2.5 k revs upwards but not what it was. Car still drives fine so suspect not in limp home just not the car it was.

Its done 57k and is driven for economy i.e. pretty gently.

Any help gratefully received.

willyb

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Fri 26 Mar 2010 16:05
VW Golf Mk V 140 Diesel - poor throttle response - WellKnownSid

If the power quite suddenly cuts in about 2,500-3,000 rpm, it sounds like the EGR valve - quite a common problem on diesels, although I'm not familiar with the Golf so it may be symptomatic of some other problem.

Do you get any black smoke / more than usual?

When the EGR was replaced on my FIAT, the mechanic told me I had to 'rev the nuts' off it at least twice a week or I'd be back for a new valve within 12 months... Driving for economy isn't good for modern diesels...

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Sun 28 Mar 2010 11:56
VW Golf Mk V 140 Diesel - poor throttle response - willyb

Thanks for your reply. Yes power does eventually come in about the revs you suggest but no black smoke that I'm aware of.

Now also have the exhaust system fault warning light on-does this back up your thoughts?

Cheers

willyb

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Wed 31 Mar 2010 14:17
VW Golf Mk V 140 Diesel - poor throttle response - tdci 130

theres a company i know http://hptuninguk.co.uk they remap the ecu and congive u that bit more power i looked in the website there is a chart where u can find your car and see what power gains and savings u can make if this is any use to you

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Tue 27 Apr 2010 00:30
VW Golf Mk V 140 Diesel - poor throttle response - Avant

Just bringing this thread to the top again in case anyone seeing the OP's post in motoring discussion wants to refer to it.

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