Question about 2000 Volkswagen Beetle

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Heater not warming or taking too long

I have a '99 Beetle. I've been having little problems lately, as expected with a 10 year old car, however within the last month a big one has come up. My heater is not working. The air never gets hot, it will get warm if i turn off the AC button and keep the recirculation on, with the knob turned all the way on hot. But this takes at least 20 minutes of driving to get warm. My best guess would be a stuck thermostat? Any ideas?

Also, not sure if this would play any factor, but the temperature light blinks blue (electrical problem according to the manual) sometimes. I know this used to happen if I wouldn't let it warm up enough and drove too hard, but I've made sure this isn't the reason.

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First off need to know if it is a 2.0 or 1.8T engine. Most likely you have a 2.0L engine. The coolant light on the dash will stay blue untill the temp reaches a set temp by ECM, then goes out. Since the Beetles do not have a temp gauge you dont know what the actual temperature is. I replace thermostats on these all the time for this problem on these cars. To test this, start car and let run at idle and set heater fan on low. Let run untill you feel warm to hot air coming out the vents. Once its as warm as it is going to get, go drive the car at a steady cruise and see if the temp drops. If so then you need a thermostat replacement. I only use OE VW thermostats 050121113C. Hope that helps you out. Kevin

Posted on Jan 22, 2009


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