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Happy New Year. My name is Phil. My heater for my VW Jetta 1999 2.0 automatic doesn't work. The blower works but not hot air. Blows dirt and part of foam. Did I need a new heater? Or is there something else wrong? Also a clagging sound when I turn the car on but once the car is warmed up the clagging sound stops. The car runs good but worry about the clagging sound. Thanks.
you want to get a thermostat that has a low temp release. when u have a hightemp release it does not open til it reaches a hot temp. when you put the low temp in it releases earlier and warms the heater core up as the engine warms up.
YES when its frosty you should start the engine at least 3 to 4 minutes before driving as,, as you drive all you are doing is driving towards the cold air and the radiator dosent get a chance to get warm so the temp will never reach its 90 so warm it up first and when the heaters warm or hot then so you will be...
AS you work better when warmer (yes) so dose your car
DEPENDING HOW COLD OUT IT IS DIESELS DONT LIKE TO START IN COLD WHEATHER UNLESS THE GLOW PLUGS ARE WARM THIS IS THE REASON FOR PLUGGING DIESELS IN MOST WONT START IF ITS COLD OUT IF ITS NOT THAT COLD OUT IT SHOULD START IF YOU HAVE ENOUGH BATTERY POWER MAYBE THERES NOT ENOUGH FUEL GETTING UP TO THE THROTTLE BODY HOPE THIS HELPS