2005 Kia Rio trouble codes

2005 KIA RIO
91,000 MILES • 4 CYL • FWD • AUTOMATIC
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DEVINHAZ
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I recently had to replace the timing belt and valves on my kia. Once it was running it idled very rough. When we ran a diagnostic on it and it read that RPMs are lower and higher than expected. We then replaced the throttle position sensor. Now it is kicking out many different codes: misfire in #1-4 cylinders, injectors are bad, fuel sensors, air sensors I am at my wits end with this car! any suggestions?
Sep 29, 2010 at 12:00 PM
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RASMATAZ
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Try switching coils for no.1/4 cylinder and see what happens
Sep 29, 2010 at 12:09 PM
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JDL
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Maybe a vacuum leak, hard to tell, without something to point in the right direction? Can you look at fuel trims?
Nov 7, 2010 at 3:52 PM
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OLDSMOBILE88
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right i can understand that..i looked at every hose i could see.top and bottom,and couldnt find nothing. but your right there could still be something i might have missed..and im sorry but what do you mean by fuel trims?. like the connections for fuel lines and stuff? cuz i had to replace a couple of them when i changed the fuel pump.
Nov 7, 2010 at 4:57 PM
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JDL
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As far as vacuum leaks, it could be a gasket, somewhere. You need a scanner that shows live engine data to see fuel trims.
Nov 8, 2010 at 8:51 AM