[banditsc]

So the car finally let me down and didn't get me home. I'm guessing it was retaliation for getting it stuck in a rain storm. I was driving home and and saw a sprinkle or two, (top was down), figured I was driving away and I wasn't it turned into a downpour. So I had to pull over and put the top up (manual mode and boot on). About 5 minutes later the warning lights comes on and the temp was pegged. I had a feeling something was going on as I saw the temp rising more then normal just prior and started smelling what I thought was coolant. So 5 minutes from home the valve is shot and all coolant is gone and it's pouring rain. Adding water results in it pouring out of the HCV. So it was towed home by AAA. Just when I had it cooling just right and all air out of the system. <img src="/forum/images/smilies/968/sad.gif" class="smilie" alt="" />

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[flash]

another aged out component - word to the wise - change this if you haven't in the last 5 years - no fun waiting for the tow truck

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[banditsc]

Well actually where I happened to pull over there was a bar, so that wait wasn't to bad since they had Spaten on tap.

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[banditsc]

I pulled off the old one today, and below is now how they are not suppose to look. Even the rubber O-Ring inside is dried out and broken up which would explain the heat I always had in the car. I'm hoping what I'm guessng should be a door to stop the flow on the inside of this valve just fell out when I was wrestling the valve out of the car as it's not in the valve.

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[xrad]

check in the pasenger compartment heating coils.....I'm sure the pieces are in there somewhere

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[jfrahm]

Backflushing the heater core should be easy enough. As for the valve, I use metal Audi 5000 heater valves. There are a couple of different designs but both strike me as sturdier than the plastic Porsche part. My 968 has a newish OEM valve but I used the Audi 5000 valve on my 944S2 and there is one on my 928, they all served me well for years without drama. they can also be had from Napa, Autozone, etc. the only thing I had to do was put a wire tie on the vacuum line to keep it from slipping off.



Good thing this did not happen on a spirited drive, coolant all over the RF tire, I'm told, makes for Mr. Toad's Wild Ride.

-Joel.

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[968crazy]

This happened to my car on the autocross course and antifreeze poured all over the rear tires and instantly spun the car.

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[josephsc]

This happens way too often. One of mine went during AutoX as well -- and the HCV is perfectly poised to spill slippery substance all over your right front tire.



I bet the door just fell out -- I personally wouldn't worry about it.

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[banditsc]

I ordered the all metal Audi part, I should find out today if it's really all metal like pictured.

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[wiseman]

[quote name='banditsc' post='58228' date='Aug 22 2008, 08:22 AM']I ordered the all metal Audi part, I should find out today if it's really all metal like pictured.[/quote]



Do you have a part number??.

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[banditsc]

Looking it up under the Autozone part number didn't seem to work. If you input a 1991 Audi 100 and do a search for Heater Control Valve you will find it. It should be Autozone part number 5910

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[Mark]

The stock plastic ones last 12-14 years so I just use those. <img src="/forum/images/smilies/968/smile.gif" class="smilie" alt="" />

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[968gene]

My car has two plastic HCVs...one is in the glove box to prevent the one on the engine from failing...

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[Mark]

HCV is part of my emergency kit in the car but heck I carry a spare water pump. <img src="/forum/images/smilies/968/smile.gif" class="smilie" alt="" />

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[flash]

lol - now that's just plain crazy

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[banditsc]

If you change a water pump on the side of the road, then I bow down to you..

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[Mark]

I took the radiator, clutch, pp,etc out of the trunk. <img src="/forum/images/smilies/968/smile.gif" class="smilie" alt="" /> I left the water pump so if it ever goes again I won't have to wait for an air shipment from Germany like last time. <img src="/forum/images/smilies/968/smile.gif" class="smilie" alt="" />

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[xrad]

I bought one of these:





got it from www.remartautoparts.com

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[banditsc]

That's the same design as I got from AutoZone, expect mine is the zinc plated color. The hose connection layout makes mounting a little tricky, but it's doable. I got mine in last night and am in the bleeding stages now, probably ought to finish bleeding it in a couple weeks. <img src="/forum/images/smilies/968/smile.gif" class="smilie" alt="" />

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[Rudolf968]

Xrad,

I looked at www.remartautoparts.com but can't find that heater on this webside. In what categorie and for which car do I have to search ?

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