Posted: Mon May 14, 2012 3:43 am Post subject: Been searching but couldn't find - Difference in plenums?
My daily driver needs the upper plenum replaced. I do have another parts car than I'm about to strip and trash. Is there any way to tell if it's had the plenum replaced? It doesn't have any dealer TSB stickers, but it has almost 250k miles on it so they could have been lost over time. From what I've heard I doubt this one would have gone this far without the work, but you never know. LoL
I'm assuming this is for a 3.8? If not, please disregard this post.
Honestly, that's not a part I would really re-use. After time they get brittle, and the inside can blow out, causing coolant to fill your cylinders, which can cause major damage to your engine rather quickly. I would recommend the kit from rockauto (I think its made by dorman). It comes with a new upper plenum, new injector o-rings, new reduced diameter egr stovepipe, and throttle body and plenum gasket. While you have the engine that far apart, I would recommend replacing your lower intake manifold gaskets as well. The stock ones are made from plastic and are known to fail over time. Most would recommend replacing with the newer style aluminum gaskets, which are far less prone to failure.
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