SOURCE: VW Polo Classic 1997 IDLE Problems
Hello, VW polos 1.0, 1.4. 1.6, suffer from carbon bulid up in the throttle bodys causing bad idling, esp the Bosch Mono-Motronic (Throttle Body Injection systems), a good clean with carb cleaner should repair the problem, also engine temp sensor replacement and idle speed control valve replacement can help idle problems.
SOURCE: What is the firing order of VW POLO 1.6 classic
!,3,4.2..Standard for most 4 cylinder vehicles
SOURCE: removing plastic engine cover from 2005 VW Polo
the cover just pulls off and disconnect breather hose as u lift it.there is about 15 screws to remove then the cover opens
SOURCE: VW Polo Classic, fuel efficiency problem
Has the car been serviced recently?
If not I would suggest getting it done.Not sure if you have diesel or petrol, but oil can thicken causing more load on the motor and airfilters get blocked and can cause a rich fuel mixture.
If petrol you can take out the plugs to check if they are a light brown colour, if very dark or black you need to check and adjust carb/injection settings/filter.Need to know what engine it is really.
SOURCE: Overheating Polo
this sounds like a thermostat fault, but also could be the sensor switch to the radiator but is more likely the thermostat, it should be located at the front top of engine, follow the top water hose to the engine and you will find the thermostat housing, also just a heads up, these had a problem when first made, according to the known fixes and problems with VW's the hoses corroded inside and started loosing water, this could be wise to get the system presure checked to...hope this helps
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