900S Engine Whine - A Little Long - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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900S Engine Whine - A Little Long
Posted by wayne [Email] (more from wayne) on Fri, 28 Dec 2007 09:58:49
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I have a 98 900s that I bought in 2003 with 47000 miles on it. A year after I bought it, the oil pressure light came one. I pulled the engine and found gunk covering the screen. The women I bought it from had all of the service records and changed the oil at regular intervals. I am thinking that at some point the car sat unused for a period of time??
I cleaned the gunk as best I could and replaced the rod bearings, one of which was worn a bit. For two years the car has been doing fine and I have been good about changing the oil and filter.
A week ago I started getting a whine from inside the engine so I parked it. Yesterday I spent some time on it, I removed the serpentine belt and checked everything that it drives. All the bearings roll smoothly. I started the engine with the belt off and I still get the whine. The pitch of the whine changes with the rpm of the engine. It seems to come from the lower front inside of the engine. Main Bearing??
During my testing yesterday, the oil pressure light started coming on.
What is going on? Does it sound like a main bearing shot? Any possibility it is related to the timing chain?
posted by 98.18.4...
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