starts shaking at highway speeds

2001 JEEP GRAND CHEROKEE LAREDO
166,000 MILES
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NYRICANINTEXAS
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My 2001 Cherokee Laredo, starts shaking at highway speeds and the oil pressure shot way up, what could cause this. The shaking I thought were the tires but I had them rotated and still have the issue.

It started shaking in the front end it felt like a loose tire wobble, but only at speeds of around 60+. I had the tires rotated and it seemed to fix it, then today while driving all day it started to shake extremely bad and the oil pressure shot up, after shutting the vehicle off for about 30 min I was able to drive it home.
Mar 27, 2012 at 1:42 AM
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JACOBANDNICKOLAS
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It could be a bad pressure release on the oil pump. If that happens again, check to make sure the oil pressure is within spec. As far as the shaking, check tire balance and for a bent rim
Mar 27, 2012 at 1:55 AM