2002 Kia Rio idle problem - Kia Forum
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post #1 of 15 (permalink) Old 07-29-2008, 10:06 PM Thread Starter
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Default 2002 Kia Rio idle problem

Hi we recently got a 2002 Rio. Our problem is sometimes when you start it will idle fine at first, the next time it doesnt want to idle and will stall out. (more not wanting to idle then idling good) We had it put on a computer and the guy said the computer was reading that the air coming in to the motor was reading 40 below???? He said it needed an air temp. sensor. We bought one and put it on and nothing changed.

Does anyone have some other good ideas to try...please help!

THANKS
~TONYA~
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post #2 of 15 (permalink) Old 08-03-2008, 02:12 PM
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Could be your idle sensor. Front right wheel well.
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post #3 of 15 (permalink) Old 08-04-2008, 03:55 AM
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it could be the TPS (IAC) that mite be a problem remove it and clean. its a common problem on the rio
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post #4 of 15 (permalink) Old 08-05-2008, 11:40 PM Thread Starter
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ok will check both of those ...thanks you guys are awesome.

~TONYA~
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post #5 of 15 (permalink) Old 08-13-2008, 06:57 PM
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I'm having the same issues right now with 02. Did the 2 tips work for you Twinkey?
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post #6 of 15 (permalink) Old 08-15-2008, 10:13 PM Thread Starter
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no sorry they didnt...but now the check engine light is going on and off...so I am going to have my husband see what it shows now and I will let you all know the outcome.
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post #7 of 15 (permalink) Old 08-19-2008, 09:41 PM Thread Starter
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The check light is on and this is what it shows now, we tested it with a hand held computer this time at home since we didnt have any luck with the one at the shop that we had to pay money for.

Manufacturing control fuel air metering
System too lean (bank 1)
TPS pedal position sensor A CKT Range/Perf
Cylinder 1 misfire detected
Cylinder 4 misfire detected
Cylinder 2 misfire detected
Random/Multiple cylinder misfire
Cylinder 3 misfire detected

Anyone know what this means, or have a clue on what to do next....thanks to all for your help.

~TONYA~
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post #8 of 15 (permalink) Old 08-19-2008, 11:37 PM
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Did anyone replace sparkplugs or get water on ignition wires?
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post #9 of 15 (permalink) Old 08-20-2008, 12:51 PM Thread Starter
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spark plugs are new

Thanks
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post #10 of 15 (permalink) Old 08-20-2008, 03:52 PM
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This MIGHT be the fix for you. I've mentioned this before for others and may seem to simple BUT--be sure the Plugs were gapped at .028 to .030 before being installed,most plugs come out of the box at around .040-.045 which is to much of a gap for the Rio. Also the plug wires are all bunched up together, I had a mis-fire problem and being sure the were dry sprayed them with silicone solved that problem. Give it a try,it might be a free fix. BTW The thickness of the average credit card is .030 so you can use that to set your plugs, don't even need to buy a gauge.

Last edited by jcwit; 08-20-2008 at 03:59 PM.
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