2001 Boxster S Water temp stays buried to the left at 100 and the light flashes.

[yojay3]

My 2001 Porsch Boxster s water temperature gauge is buried to the left side of the gauge around the 100. During this time my light is flashing. Temp gauge never comes up to the 180 and light doesn't stop. What part can make this happen on the gauge. I just replaced a broken heater valve so it not overheating. Any help on how to fix this problem, please let me know. Thank you Jay

 

 

[JFP in PA]

1 hour ago, yojay3 said:

My 2001 Porsch Boxster s water temperature gauge is buried to the left side of the gauge around the 100. During this time my light is flashing. Temp gauge never comes up to the 180 and light doesn't stop. What part can make this happen on the gauge. I just replaced a broken heater valve so it not overheating. Any help on how to fix this problem, please let me know. Thank you Jay

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Welcome to RennTech 

 

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

Note
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)

 

[yojay3]

3 hours ago, JFP in PA said:

Thank you for that but I think I might be a little outside of that box.

1st I am not a mechanic! I do try and think logically and ask questions.

 

Background.

Had the water pump replaced, because of the water temp gauge acting erratic. Needle full left and 1 blink per second. Car was starting to overheat.

Problem:  

After looking I discovered that heater valve had come apart and was allowing air to escape, until it finally busted. So that is where all the hot air was coming from.

Soultion:

I changed the heater valve, filled antifreeze, and ran car. No leaks and passed a 10-pound pressure test.

 

However, this brings us to our problem:

The temp gauge still has not moved. 

 

 

 

 

 

3 hours ago, JFP in PA said:

1 minute ago, yojay3 said:

 

 

 

 

[JFP in PA]

Either an air pocket or a disconnected or dead gauge sender.