Burning plastic smell, mystery drips on catalytic - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Burning plastic smell, mystery drips on catalytic
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Posted by vovo222 [Email] (more from vovo222) on Sat, 30 Sep 2006 07:33:23 Share Post by Email
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I have been experiencing a mystery smell for about two weeks now: after every drive, long or short, there is a faint smell like hot melting plastic coming from the engine compartment. One week into this, I checked undermeath the car and found congealed drips of a white-ish cheesy plastic on the bottom of the catalytic box, as if someone put a chunk of glue gun material up there to melt. I scraped this off the bottom, but am still getting the smell . . . so what is going on up top? (can't get under the car right now)

I saw post re: some sensor or switch that could be leaking oil on top -- where is it and if source how to fix? Also, this smell started about the same time I removed driver's seat and console to replace my iginition switch -- is there a heat shield above cat that would keep anything dislodged from falling on it and baking, or would something bake and melt up there too? Any other suspected sources?

Woody
1994 2.3L auto 3dr coupe, 111k mi.


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