Coolant Expansion tank.... help.

[sc00ter18]

I finished yesterday to remove and replace my cracked coolant tank.

The process was not the easiest but it was completed.

so i drove the car last night and all seemed good

but today when i got to work the coolant was leaking fast from the CAP. (01 revision)

So i let it cool, The tank ended up empty after it cooled down.

So i removed carpet and clean all area, filled in the tank with coolant half way and started the car..... the temp light still blinking..... i checked the sensor at the bottom of the tank and it had some coolant at the wires where the plug is (could this cause the blinking temp light??)

also i didnt bleed the system yesterday .... is this what caused the cap leak, or is this a faulty cap??

Thank you guys.

Edited June 7, 2008 by sc00ter18

[usaf-lt-g]

I finished yesterday to remove and replace my cracked coolant tank.

The process was not the easiest but it was completed.

so i drove the car last night and all seemed good

but today when i got to work the coolant was leaking fast from the CAP. (01 revision)

So i let it cool, The tank ended up empty after it cooled down.

So i removed carpet and clean all area, filled in the tank with coolant half way and started the car..... the temp light still blinking..... i checked the sensor at the bottom of the tank and it had some coolant at the wires where the plug is (could this cause the blinking temp light??)

also i didnt bleed the system yesterday .... is this what caused the cap leak, or is this a faulty cap??

Thank you guys.

Ok just saw this. This sounds very similar to me Sc00ter. I was driving and then noticed spillage everywhere. Luckily for me, it wasn't a cracked tank, it was due to the cap not being on tight enough. However, the "Temp" light has been on ever since. I'm wondering the same if the sensor might have coolant on it. Although I'm not 100% sure where the sensor is located.

[juniinc]

Scooter I know we are talking rite now on my MSN,,,but

overflow will prooly go away

USAF U might want to read this too, go disconnect 2 wires at the botton of the tank that way we can by-pass the sensor. either 2 wires are shorted(wet) or faulty sensor. When U take those 2 wires apart, I bet flashing light will go away,,,

by the way USAF here it is

I finished yesterday to remove and replace my cracked coolant tank.

The process was not the easiest but it was completed.

so i drove the car last night and all seemed good

but today when i got to work the coolant was leaking fast from the CAP. (01 revision)

So i let it cool, The tank ended up empty after it cooled down.

So i removed carpet and clean all area, filled in the tank with coolant half way and started the car..... the temp light still blinking..... i checked the sensor at the bottom of the tank and it had some coolant at the wires where the plug is (could this cause the blinking temp light??)

also i didnt bleed the system yesterday .... is this what caused the cap leak, or is this a faulty cap??

Thank you guys.

Edited June 8, 2008 by juniinc

[Tool Pants]

You don't need to bleed the air out when replacing the tank. At least that is what I was told by a mechanic who has replaced many tanks. The tank is higher than the engine so air does not get in the cooling system when the tank is removed. With that said I did flip up the lever and drive around when I replaced my tank.

[sc00ter18]

after a day of driving .

symptoms did not re occur ..... no leaks as of now.

the cap seems to be just fine.

if anything changes i will update.

[DTBoxster]

I had the coolant leak problem as well on my 99 Boxster, along with the blinking coolant sensor light. Turns out my waterpump needed replacing. We also replaced the coolant sensor, but the light is still blinking. Any other ideas why that would be and how to fix the blink?

[Tool Pants]

The difference between the MIN and MAX markings on the tank is not much, and it is hard to see the actual level. Fill it up to the MAX level when it is cold.