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I'm getting a barely noticable hestiation on my corolla at highway speeds, Previous owner says it may be a Vacuum issue, Vacuum Control Valve may be clogged or stuck??

Any suggestions?


Another quick question, If feels as if I am revving really high, I have no RPM :( I shift into 3rd at about 80 KPH....Is that normal?

its a 1994 1.6L Automatic with 149,000 miles on it.
 

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Maybe you should check it out to see if it is vacuum related. Regarding the High revving, does the tranny shift normally, and into lock up. Since it is the 3 speed, it would cause the engine to rev higher on the highway compared to the 4 speed.
 

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Check your air filter, and replace your fuel filter if you haven't done so. Your transmission is fine. You most likely have a 3 speed. Since you have no 4th gear your car just over rev's. This is a good video check it out. Might help your situation
 
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