VW 1997 1.9 Polo - Diesel motor surging

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Thu 10 Jan 2013 21:45
VW 1997 1.9 Polo - Diesel motor surging - IvorSmallFaucet

Gentlemen and Ladies,

Since my diesel car last ran out of fuel ... my car has a habit of over rev'ing and surging at low rev's and also starting to drag (choke) then release itself and accelorate away again - while I am driving on the motorway at say... 70 mph around the 3000 rev's - then surging and giving me so much power that i have to brake to maintain the speed limit.

I can feel something just go klunk and the surge is unmistakable, lovely power but short lived. My car is a non-turbo job, I have replaced both the air and the fuel filter recently.

Is there a fuel filter anywhere else other than the main filter under the bonnet? perhaps on the fuel pump or ???

ANY SUGGESTIONS PLEASE

IvorSmallFaucet in Sunderland

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Thu 10 Jan 2013 23:06
VW 1997 1.9 Polo - Diesel motor surging - Avant

Moved to Technical.

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Thu 10 Jan 2013 23:13
VW 1997 1.9 Polo - Diesel motor surging - Peter.N.

Try changing the fuel filter if it hasn't been changed lately, otherwise I would suspect air in the fuel system.

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Sat 12 Jan 2013 14:11
VW 1997 1.9 Polo - Diesel motor surging - Crasher

Have you had a fault code read carried out? Your other post does not describe the problem as well as this one so I don't think it is idle fuelling boost. What is your engine type code, AEF or AGD?

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