Question about Volkswagen Jetta

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Trying to reach superbovine. Your reply was extreamly helpful. My next question is if the water pump need to replaced (again :( it was replaced 4 years ago) Will I need a new thermastat too? Also, if it the coolant flange, will the discharge be a redish/pink as well? Thanks Karri

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If discharge of coolant if reddish is an indication of rust. Just drain out the entire coolant and then fill with water & a solvent to remove as much deposits, both from the radiator & engine. You will need to start the vehicle once so that the mixture is evenly spread. After letting the mixture drain this too, start the vehicle and wash the solution out by inserting a garden hose with the outlet of the hose inserted at the radiator cap. At the same time keep the engine idling & the water flowing. When clear water is pouring out from the draining point. Put off the the engine and let it drain completely. After this fill in fresh coolant & distilled water mixture to the normal level.
The pump, if still working - leave it alone. If the engine starts over heating again, then change the water pump.
If temp shown by the gauge/meter displays rise & fall of temp., then let the thermostat remain, however since that is a critical indicator of engine heat, I would definitely recommend changing the thermostat so that you be sure how it responds and take action promptly...........sodeep

Posted on Oct 02, 2009


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Posted on Jan 02, 2017


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