I took out the carpet and foam pads last night and there isnt any sign of leak, or residue. I didnt take the tank cover off, since i didnt see coolant under the foam, but thats a good idea, ill do that tonight if this new cap doesnt work. Thanks!

Joe

Out of curiosity, do you have any white smoke comming from the exhaust..?

You mentioned the purge valves can go bad. Saying the valves typically lead more to condensation on the trunk lid. That's what I experienced today. Condensation on my deck lid. When you say "can go bad", are you referring to maybe the seals are bad in the valve?

None that ive seen. Why do you ask?

Joe

Hello Joel,

A couple of weeks ago my Alfa Romeo Milano drank the coolant on the reservoir and I ask my son to check the exhaust while I gave her a little gas and I had a faint white puffs from the exhaust and end being a failed head gasket on the Alfa V6 engine...

However, it seems that the Porsche engines this is a rare occurrance

.

Damn, that sucks man.

Well fellas, after all the hassle and taking all the stuff off to get to the water pump and the hoses, it turned out to be the damn coolant cap. Lol. Im not mad though, it was a good learning experience, and now when the pump does go, ill have one ready, and know how to get to it. Thanks for all the input and help, you guys are the best!

Joe

Similar problem with other symptoms
 

So I read thru several threads so as not to create a duplicate and this one seems to be somewhat similar to my issue. The temp will get just past the 180 which looks to be about 200 degrees. The light will start blinking, it has never stayed on solid. A blinking light is supposed to mean either coolant level or a fault in the engine compartment cooling fan. Here is what I have done so far and what I plan on doing. But I need some input about what I may be missing.
1) The coolant was low three times after refilling it, so I plan on getting a new coolant cap.
2) The drivers side cooling fan works on both low and high speed, while the an on the passenger side is only working at high speed. I checked the relays and they are all good. Do I need to change out this fan?
3) The engine fan is working, I jumped the relay. Can the thermo sensor go bad?
4) Water pump and thermostat have 20,000 miles in 9 years. should I change them out?

Thanks, Jon

Mine gets past 180 ~ 200 deg, but never get a light and runs fine at this temp

All right, first things first. First fill the coolant system with distilled water. Then start the car and get it up to temperature, and try to purge the system of air as well as you can, just using the manual method.

Now, check for leaks, check in the water pump area and in the coolant cap area. If it holds pressure and there are no leaks, start looking at the radiator fans. It's a pretty complicated system that has two speeds, and it's very common for a resistor to blow out which can cause overheating. If you find fault with the radiator fans, then that's probably all that your problem was, it just overheated once.

Okay, disregard last post. That's what I get for writing before reading all of the thread.

Not the coolant cap
 

So I replaced the coolant cap with the new one I received today and the light still blinks from the moment I start the engine. I guess I will try to find a thermo sensor for the engine compartment. Has anyone ever had to replace one of these. I have not been able to find one when I search for parts.

1) The coolant was low three times after refilling it, so I plan on getting a new coolant cap.
2) The drivers side cooling fan works on both low and high speed, while the an on the passenger side is only working at high speed. I checked the relays and they are all good. Do I need to change out this fan?
3) The engine compartment fan is working, I jumped the relay. Can the thermo sensor go bad?
4) Water pump and thermostat have 20,000 miles in 9 years. should I change them out?

Yup, I'd be surprised if that survives. How do you just ignore the gauge? :confused: