Question about 1999 Volkswagen Jetta

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Where is the location of the Thermostat for a Jetta 1999 I just need to change it cause there's no more heat coming out !!! plus, the fan(rad) does not start and the temp goes high once in a while when driving and i have to slow down and wait a bit !

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According to the Haynes manual, the thermostat is located by follwing the lower radiator hose from the radiator back to the engine. The housing for the thermostat is bolted on the side of the engine block facing the radiator.

Posted on Jul 16, 2009

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if it helps please leave 4 thumbs up

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could be waterpump?
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lack of coolant will make heater core to blow cold,if engine heats up with full coolant,usually means poor or no circulation.
water pump?
run engine with full coolant,at operating temp.with rad cap off and look in rad cap hole and see if there is movement of water inside rad.
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