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VW Polo 1997, very low mileage, is in danger of being scrapped. Nobody seems able to sole the problem. After running perfectly for several years, the car was left outside, unused for 4 weeks in wet

When you try to start the engine, it fires (cylinders 1 & 4 only) but often will not run. Smell of unburned petrol. From time to time, it will start and tick over normally for several minutes. Once running the engine is reluctant to accelerate, but if you can get it up over about 2000 rpm, it seems happier. It is sometimes possible to drive it almost normally for 1/2 mile or so, but then it returns to rough running and stalls. Tests tried so far - All normal mechanical tests have been carried out and check ok: valve timing, ignition timing, distributor and rotor, new plugs, coil pack & leads, fuel drained and replaced, fuel pump, no oil in the water, no water in the oil - no indication of head gasket blown, compression consistent, manifold gasket ok. Therefore assumed to be electrical/electronic problem, so ECU sent away for testing and checks ok, spare idle air control and spare manifold pressure tried with no improvement. New coolant temperature sensor. Are there any known conditions with Polos which could cause this?

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 3 Answers

SOURCE: intermittant stalls & rough idle

i would say maf 2

Posted on Dec 29, 2008

  • 1 Answer

SOURCE: no compression in one cylinder

Timing belt slipped around cam pulley. Take off your timing belt cover and check the position. This would explain misfiring and compression loss. Stretched belt or missing cogs in belt likely culprit.

Posted on Feb 04, 2009

  • 12 Answers

SOURCE: Check engine light comes on temporarily - engine chuggs at idle

Before changing you pcm try cleaning your egr valve. remove the valve and see if its stuck in the open position if so use a small pick to clean around the spring.

Posted on Mar 12, 2009

  • 1 Answer

SOURCE: 1996 vw polo- engine keep stalling

Check the fuel filter.

Posted on Apr 12, 2009

alicantecoli
  • 22114 Answers

SOURCE: 1980 VW rabbit, manual/fuel injection: I am

it starts from cold because the auto choke is on ,allowing a richer mixture ,try removing the sender unit in the tank and seeing if the connection from the pump to the outlet connection is ok or leaking causing a loss of fuel pressure

Posted on Aug 02, 2009

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