Re: Rapid front end clunk noise over rough road in 2000 Viggen - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: Rapid front end clunk noise over rough road in 2000 Viggen
Posted by Jeremy R. [Email] (more from Jeremy R.) on Thu, 3 Jan 2019 13:03:21
In Reply to: Re: Rapid front end clunk noise over rough road in 2000 Viggen, Ian D Whelan, Thu, 3 Jan 2019 07:08:44
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The passenger side motor mount is easy to diagnose. Take off the right front wheel, remove the fender liner, and see if the bolt head is still visible in the middle of the mount. If it's below the hole, then the mount is bad. If it's really bad, your oil pan will be sitting on the subframe.
The tie rods are also pretty simple to check. Both inner ends unbolt from the center of the rack. They have a lock plate that presses over the bolt heads, which needs to be pried off, but then they both just unbolt. If the inner bushings are shot, they'll be sloppy or will push out by hand. Several companies sell replacement bushing sets that press in without tools. They're made out of a polyurethane-like material that will get loose after a few years, but the sets are cheap, usually less than $10. Regardless of the brand of the kit, the bushings are all made by a company called RAMCOA.
The tightness of the subframe bolts is impossible to test by hand. I've had to snug mine down a little more with a very long breaker bar to eliminate clunks. I'd hesitate to torque them more than the factory amount if the bolts are old or you live in a rust-prone area, though. Also, how did you check the stanchion arm bushings? When one of mine went, I could see that the arm was resting on the subframe with the car jacked up.
posted by 50.205.14...
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