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Discussion Starter #1
Hi there:

My 2001 Sephia was running OK, it seemed to be a bit slaggish sometimes under load, kind of a slight hesitation in the throttle response. Right before it died it seemed to be idling low and I was keeping the motor up in the revs. When it died I was doing about 40.

I replaced the fuel pump stupidly b/c I was sure this was the issue. Still wont start. Battery is fine, alternator is fine, starter is fine.

Going to check plugs tomorrow and replace if nessesary.

What else, I was thinking Mass Air Flow sensor?
 

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2008 SpectraSX, 2014 Optima LX,2006 Jeep Liberty, Linux Mint Mate
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I was thinking timing belt.... (died doing 40).
Commonly ignored by the owner until it breaks... I believe you are relatively lucky as this should be a non-interference engine. Later KIAs when ignored require very expensive repairs or total engine replacement when the belt breaks. Idling low usually means a dirty IAC (idle air control) valve.
Dave
 

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Discussion Starter #3
Nah I can see that the belt is still good, I did it at 100k.

Didnt get around to checking plugs but am going to do it tomorrow.

It wasnt a consistent low idle, but would drop every now and then while in traffic.
 

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2015 Buick Verano "Leather Group", 2015 Kia Optima Hybrid
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You can see it without doing anything? Where is the cover? Or did you take it off? These belts have been known to fail, even within 30-40k miles. Are you sure... Sound to me like tbelt, or a loose battery ground.
 

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Discussion Starter #5 (Edited)
Thanks for the help guys.

Yes, the belt is good i checked it of course

However, I did notice, that when the ignition is on the IAC valve is emmiting a small buzzing noise, is this normal?

Going to take it apart, clean and put back together. Would a faulty IAC prohibit ignition?

Need to get this car fixed, cant afford to tow into santa rosa! :eek:

Edit: I should also note, I had a vacuum leak code for a long time, but was never able to find the leak. Now that the car doesnt run, should I go ahead and replace hoses?
 

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1985 Subaru Loyale (wagon), 2000 Kia Sephia (sedan), and 1969 Mercury Comet (coupé)
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... I should also note, I had a vacuum leak code for a long time, but was never able to find the leak. Now that the car doesnt run, should I go ahead and replace hoses?
Yes! ... is good time to change the Hoses, specially if they're Old or the original ones; the Buzz noise is normal in these engines.

Once I fixed similar issue on a friend's Sephia, it has a loose terminal, the one that plugs to the coil pack has a craked plastic housing and it leaded to misfire and sometimes the engine died... I Kindly suggest to check the plugs / terminals around the coil packs.

Have you scanned the Codes? ... Do you know if there is any new Code?

Kind Regards.
 
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