sudden coolant leak right rear wheel area, and now stopped

[Jake Raby]

Thats the area where the overflow exits the car. You probably had an air pocket that created a belch out the overflow.. Top off the coolant and you should be good to go.. Just keep an eye on it.
BTW- Water pumps need to be changed every 3 years to resist issues stemming from cracked heads due to broken impeller blades.

Just keep an eye on this, lots of very early intermix issues begin with a symptom like this, especially if the car is a '99

[tonycarreon]

same thing happened to me last month. i checked my coolant and it appeared topped up. went to get gas at the station a mile from the house. as i was filling up i looked down and realized it was dumping coolant. when my heart stopped racing i thought to check the cap. l looked and sure enough it was slightly crooked meaning i'd skipped a thread. took it off, topped it off with a little distilled water and put the cap back on and it's been fine ever since. *phew*

[Jinster]

Thanks for the replies, guys.

I drove the car out with trepidation this morning and so far, all is well. So a gas bubble pressure overflow sounds like what caused it. I bled the cooling system last night and heard some bubbling noise when I opened the valve.

My coolant cap ends in 01.and there were a lot of condensed steam on the rear trunk lid, so I guess that cap is no good. Getting a replacement today.

[ppbon]

In order to make sure all the air is bled, follow the instructions found here:
http://www.pedrosgarage.com/Site_3/Install_3rd_Radiator_%26_Coolant_System_Bleeding_I nstructions.html
Scroll down half way and you'll see the bleeding instructions.
Also, check your coolant cap and/or any cracks on the reservoir.
That bubble of air got into the system because of a leak.
The most common is the coolant cap.
Happy Boxstering,
Pedro

[chris97boxster]

Just went thru this. Newest model for cap ends in -04. Get the latest cap. Clean out the trunk.bleed the reservoir. While ur cleaning out trunk , pull back carpet and inspect the reservoir. They say it may possibly leak from then level sensor also. Yes some of them crack. After reading most of the threads on this very imformative forum....I was glad mine was just the cap. No problems since I put the new cap on last sat. Btw if u pull up the black plastic under the oil cap and antifreeze reservoir cap u'll notice a hole for fluid drainage. This is also where the pressure bleed valve is. It promptly pours out in front of the passenger rear tire . Found this out by pouring water too quickly into reservoir. Now I know. Now so do u. Hope this helps. Cheers.