94 Lexus LS 400 Engine Vibration

1994 LEXUS

KBLANKENSHIP

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2 POSTS
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I have a 94 LS 400, V8, with 180,000 miles. I have meticulously cared for this car over the years with oil changes every 3,000 miles and fluid and spark plug replacements every 30,000 miles. Very recently, the the engine started vibrating at around 1100 to 1200 rpm's. Above and below that range, it smooths out. What could be the cause of this?

Sep 6, 2007 at 5:15 PM

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MERLIN2021

AUTOMOTIVE REPAIR CONTRIBUTOR
17,250 POSTS

Check mounts, both tranny and engine, if OK check harmonic balance.

Sep 6, 2007 at 6:01 PM

KBLANKENSHIP

MEMBER
2 POSTS

Thank You.

Sep 8, 2007 at 3:18 PM