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Nick_Esc

Blinking temperature light.

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Hello everyone. I have a '99 c2 with 71K on it. Ever since yesterday, when I am driving the red light on the "hot-side" of the temp gauge blinks. The car cannot be hot since it does it even when I have let it cool for a couple of hours. The temp gauge seems to work normally besides that. The needle rises and stays put at just between the 8 and the 0, so that seems ok. Does anyone know why this happens? Thanks!

-Nick

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Hello everyone. I have a '99 c2 with 71K on it. Ever since yesterday, when I am driving the red light on the "hot-side" of the temp gauge blinks. The car cannot be hot since it does it even when I have let it cool for a couple of hours. The temp gauge seems to work normally besides that. The needle rises and stays put at just between the 8 and the 0, so that seems ok. Does anyone know why this happens? Thanks!

-Nick

Check your coolant, may be low.

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I had the same issue with my 99, and the coolant level was a little low, only 1/2 a cup. That much less volume and some "spirited driving" will send the light to blink. I found the small coolant leak, parts on order.

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Covers all Carrera (996), GT3, TT / GT2 and Boxster (986) cars

Here is the long explanation from the service manual on the flashing coolant light.

"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."

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Thanks everyone, it sounds like i need to buy some coolant and see if that works. Thanks for you help!

--Nick

If you add more than 8 ounces of coolant then I think I would also look for leaks. The older caps (part number ending in 00) are not very good and should be replaced with 01 caps. The tank should also be inspected as well as the hoses. Good luck!

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Here is my situation... 1999 Porsche 911 C4

I went to the race-track and overheated the car... after that when I started the car when it is cold the temp pointer is pinned to the right and the light blinks slowly, but after a little bit of driving the temp pointer reads temp accurately and light turned off.
After completing the following "fixes" when I start car cold the light blinks and the temp pointer is to the right, but after a little bit of driving the temp pointer reads temp accurately but now the light stays on. If I start the car warm the only thing that happens is the light blinks slowly.

To fix the initial issue I did the following:
Replaced the coolant tank,
Replaced the reservoir CAP with the black one
Replaced the coolant level sensor
Replaced the Engine Coolant Temperature Sensor
I also tested the engine compartment blower and it works fine.

My only guess is that the wiring on the coolant level sensor is broken. When I replaced the tank I noticed the old one was not mounted in the car and was able to flop around.

Any ideas?

Thanks

Mark

IMG_20170105_160014.jpg

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On 12/9/2005 at 6:06 AM, Loren said:

Covers all Carrera (996), GT3, TT / GT2 and Boxster (986) cars

Here is the long explanation from the service manual on the flashing coolant light.

"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."

 

:welcomeani:

 

What speed is the light flashing at?

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Hi, I have a 2000 carrera 4 cab, with 49k miles - my light blinks slowly ( even when cold) - coolant level fine.

 

thoughts?' I have anew resavoir cap on order - looking for a coolant sensor - struggling to locate a part number? Without taking the old one out 

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3 minutes ago, Abirob said:

Hi, I have a 2000 carrera 4 cab, with 49k miles - my light blinks slowly ( even when cold) - coolant level fine.

 

thoughts?' I have anew resavoir cap on order - looking for a coolant sensor - struggling to locate a part number? Without taking the old one out 

 

You want the cap that ends in -04, 996-106-447-04.

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Thank you - appreciated - parts outlet has confirmed this also

regards

neil

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