Question about 2000 Kia Sephia

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Sluggish acceleration, hard gear shift

Just had an alternator belt change because it broke and i also got a new flex pipe. A day or so later the battery has been going dead, the car is sluggish and changes gears very slow or late. It feels like I don't have all of the power I normally have. I also hear something that sounds like a vaccuum leak or air coming out of a tire during acceleration.

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There is a vaccum assist module on the transmission, which uses alot of vaccum and helps control your shifts, check that vaccum line at the intake manifold and the transmission to make sure it is connected, this line being off can cause you alot of problems,
The battery, check to make sure your cables are in good shape and connections are tight and clean, make sure you put the new belt on right.
If you have it on wrong you could be spinning the alternator backwards, then it would'nt charge.

Posted on May 20, 2009


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Posted on Jan 02, 2017


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