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I was changing the upper motor mount on my 04 and noticed oil leaking from a switch kind of near the idle pulley. There is a small access hole through a bracket to reach it from the firewall side. Can someone please help me ID this switch and any special tools I might need? I'm sure if I know what to search I will be able to find what I need to know.


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It sounds like you're talking about the timing chain tensioner. It's on the back of the engine by the idler and tensioner pulleys, and you access it through a hole in the upper alternator bracket. There are two seals on it. One is a large combination metal and rubber gasket that seals the tensioner to the cylinder head, and the other is a small o-ring that seals up the plug that screws into the back of the tensioner. There's a good write-up on how to replace the seals here:

http://saabworld.net/showthread.php?t=29153
 
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