1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Common or Not??

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Old 03-10-2009, 07:10 PM
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Passenger side fenderwell is rot, which is odd because the rest of the car is mostly rust free, and not even CLOSE to this bad. Is this common, and how should I fix it? My back seat and floor is getting FLOODED lol.
I removed the back seat today..
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Andd 1 more pic, from the outside. Again, passenger side rear fenderwell, looking upwards at it
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Old 03-10-2009, 07:16 PM
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I have a 97 sitting in my drive way that I'm working on for another member and it has the same problem, same place. Also talked to some other members that have this problem. I'm planning to coat my wheel wells with truck bed liner this spring. Perhaps I should do a write up on this so other can do it as well.
Old 03-10-2009, 07:20 PM
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**** up to that. Im about to fiberglass the ***** out of it from the inside, then coat the outer area in some thick-*** rhino liner or something of the sort... Any other tips as to how I should fix this?? Thanks guys..
Old 03-10-2009, 07:32 PM
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Seal the rust with something like navel jelly
Old 03-10-2009, 07:34 PM
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Just ran outside and took that pic

That directly behind where the seat should be, pass side. I pulled back this little cardboard type pice and thats where it comes in from..
Old 03-10-2009, 07:36 PM
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The car I'm working on has a soaking wet passanger seat because of the same problem
Old 03-10-2009, 07:37 PM
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Unfortunately pretty common and always seems to be the passenger side.
Old 03-10-2009, 08:28 PM
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You need to stop the rust, then protect from additional. A good rust converter will take the rust and convert it into a black protective coating. Then use a rust remover. this will take care of whats left. Rust is a cancer and will continue to spread if you are not able to convert it, remove it and then protect from future new rust build up. Most body shops and repair facilities will cut it out, then use a prevention material and a good solid urethane spray on barrier for the surrounding area.
Old 03-10-2009, 10:21 PM
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the 95 i almost got had the same problem. my planned remedy was to make a peice of aluminum to cover it inside the wheel well, pop-rivet it in place, seal it with silicone, and flatten it out so i could cover it with a thick layer of bed liner to prevent more water from reaching in there.
Old 03-10-2009, 10:33 PM
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Well, after a quick trip to the 24hr wal-mart, This is what I left with(along with deodorant lol)

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Bottle of fiberglass resin, package of fiberglass cloth, and some 3M rubberized undercoating, for a grand total of $24.00 I went this route as a Suggestion of a buddy who runs a body shop. He did, of course say the only way to permanently stop and prevent it is to cut out the rust, weld in new metal, and paint. But, he said "its not a show car or anything and this will hold for a long time, for short cash" which is why I bought that stuff.. I'm hopefully doing it all on thursday after work, I'll let you guys know how it goes!


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