Question about Volkswagen Polo

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I have a 2005 Polo 1.4TDi hatch. The car is cutting out while I am driving, it has happened while I have been on the freeway, I find if I rev a bit it then continues going. I took it in to a VW dealership and they said it was some sensor, which they replaced, but the problem persists. I am thinking it could be the fuel pump or battery?

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  • Tade Jan 03, 2013

    good day Jmdebeer.I'm having a similar problem with my 1.4 tdi &was just wondering what was eventually wrong with yours & how you got it fixd.thnx

  • Tade Jan 03, 2013

    good day Jmdebeer.I'm having a similar problem with my 1.4 tdi &was just wondering what was eventually wrong with yours & how you got it fixd.thnx

  • Tade Jan 03, 2013

    good day Jmdebeer.I'm having a similar problem with my 1.4 tdi &was just wondering what was eventually wrong with yours & how you got it fixd.thnx


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Unlikely to be the battery, more likely is a problem with the Air Flow sensor or Accelerator Pedal Position sensor or Throttle Position sensor or even Turbo Boost sensor.

Posted on Mar 24, 2011

  • jmdebeer Mar 24, 2011

    Thanks for this. Not sure if this will narrow it down a bit, but it seems to be happening when I am stopping and starting my car a lot (seemingly when the car is warm). It never happens in the morning when I go to work. The sensor that was changed according to the dealership was the Speed Sensor if this helps at all?

  • tim_in_nz Mar 24, 2011

    Does it actually cut out completely, as in if you left the accelerator the engine would completely shut off? Or does it just lose power, as if the turbo just stopped working? Have seen the Variable nozzle turbo on VW's give trouble where the rotating vanes become jammed with carbon, this would be able to be picked up by a diagnostics centre by testing the boost sensor while driving, having the problem occur. By diagnostic centre i don't necessarily mean the dealership, a lot of the time they only use the plug in scan tool, which is really too slow to be used for diagnosis of a problem that is intermittent and not illuminating the engine check light. Also dealerships tend to plug the car in, and replace whatever the car is saying the problem is, which is not foolproof. :)


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