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Your 94 Blazer vibrates badly around 65-75mph but smooths out around 80mph what can cause this Its not the tires or balance?
Wiki User
∙ 17y ago
Any answer you get on this is just going to be an educated guess. So, with that in mind a couple things for you check for is a wheel out of balance or a "bad" tire(cord separation). I Had the same experience with my Ford Sable. It would drive smooth up to 55 mph, then vibrate above that speed and smooth back out at 79 or 80 mph. I took it into Les Schaub three times having the alignment and tire balance checked with no help. I also rotated the tires but couldn't tell any difference. Finally after nearly 2 years like that I noticed an odd wear pattern on one of the tires. I replaced the tire and the vibration problem ended. I think worn ball joints and tie rod ends could also cause the vibration you describe. I know this is not really an answer to your question but rather some possible causes to check out. I'm not a mechanic so maybe you'll get some further suggestions.
Wiki User
∙ 17y ago
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