Question about 2001 Kia Sportage

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High rpm at highway speeds

My kia is running high rpm at about 65 mph. They are about 3300 and couple times got to 4000. whats the problem

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Posted on Jan 02, 2017

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SOURCE: a 2002 Kia Spectra.

sounds like the trani is in limp mode take it to autozone and have the codes checked in the trani. I am sure it will tell you that there is a lack of comunication to the shift soliniods, if so pull the large wire harnes that is connected to the trani and clean the connection reconnect and try again. that should clear it up, if not look at buying a set of shift soliniods.

Posted on Sep 22, 2011

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Hi

It does look like you have a 3 speed C6, if the PRND21 description is correct. If you do have overdrive, the "D" will be printed in a white oval.

Sounds like it is OK. My Mustang has a 351C with a C6 trans, and 3000 rpm is about right at 70mph.

The defining factor on the rpm will be the Differential gears, which in a truck, might very well be taller gears instead of highway gears, as the taller gears provide more power output at the axles than the highway gears do.

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if you had 3.0 to 1 gears (Highway), that means that the driveshaft will turn 3 times for every complete revolution of the rear wheels(Axle)

If you had 4.0 to 1 gears, then the driveshaft would turn 4 times for every revolution if the axle. Lots of torque for pulling stumps, but on the highway. the engine will have to turn more rpm's to maintain 70 mph vs a 3 to 1.

with the 3 to 1, you will turn less rpm's on the highway, but will have less available low speed power (Torque) at the wheels.

Sounds like the truck is doing fine.

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