Question about 1997 Volkswagen Jetta

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It hesitate to start up in cold weather i have to give a pump of

It hesitate to start up in cold weather

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There is a cold start valve srpay extra fuel at the start to assist the start in the cold weather. If it is not open during the start then this is why there is a problem. This valve is operated by an electric coil. Even checking the resistance reading, but the valve is still not opening due to being stuck. Power is only coming to the valve during the start and the temperature is cold reported by the coolant temperature sensor . If the coolant temperature sensor is bad reporting warm temperature then the valve will not open. The temp sensor is less expensive than the valve, so it is an economical way to tackle the sensor first. Good luck.

Posted on Nov 19, 2009

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