Asked in Fuel Filters
Fuel Filters

2002 KIA optima will slow down to half the normal rpm when driving and almost stall when idling- then start driving normally sometimes in a mile other-times 10-20 miles-is this a fuel filter clogged?

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Wiki User
03/01/2007

I have 2004 that did a similar thing, very intermittent though. I think the dealer replaced the fuel pump and air filter and I haven't had a problem since. It may or may not have been the exact same issue, but hopefully it helps a little!