rpm,s run high on my jeep and its not the vacuum what could it be?

  • Thread starter Thread starter BIG/E
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BIG/E

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i have a 89 jeep and the rpm,s run high when i go over 15 mph,s. i cant find any vacuum leaks. other than that it runs great.
 
flatter torque ,even at lesser rpm torque must remain constant.i think this problem leads to a big engine mainteince.
 
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