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Old 05-11-2019, 11:20 AM   #1
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thermostat issues?


Has anyone had problems with the thermostat showing red light Even though there is enough cooling water?

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Old 05-11-2019, 04:29 PM   #2
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Location: Oklahoma
Posts: 3,672
Exactly what is the light doing? Steady on, blinking slow, blinking fast?
Read this:

Originally Posted by JFP in PA View Post
Four functions of the coolant warning light:

1. Engine coolant level too low
light flashes slowly (0.5 Hz)
2. Engine compartment temperature too high
light flashes slowly (0.5 Hz) (engine compartment blower might be faulty)
3. Engine coolant temperature too high
light is lit; pointer on the right
4. Temperature sensor at water outlet faulty
light flashes rapidly (1 Hz); pointer on the right

The temperature warning in point three is indicated if the conditions "engine coolant temperature too high" and "engine coolant level too low" are present simultaneously
(1Hz = 1 flash per second. 0.5Hz = 2 seconds per flash)
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Old 05-12-2019, 06:08 AM   #3
1998 Boxster Silver/Red
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Originally Posted by gabba76 View Post

Has anyone had problems with the thermostat showing red light Even though there is enough cooling water?
You might have better luck posting in the proper forum category.

This is the Boxster and Cayman Detailing Discussion forum. Try the "General Discussions" forum.
1998 Porsche Boxster
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Old 05-12-2019, 07:14 AM   #4
2003 S, Arctic Silver, M6
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Location: Winnipeg, MB, Canada
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Sometimes the simplest thing is the answer. Make sure your coolant cap is not cross threaded and make sure you have the latest one ending with 04 in the part number.

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