2002 Kia Sedona poor acceleration, misfiring, ignition coil

Tiny
SCOOTERFUN
  • MEMBER
  • 2002 KIA SEDONA
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 62,000 MILES
My engine was replaced this year with 2004 egine with low mileage. I have problems with the ignition coil boots bursting (expensive, 2 burst already) and spark plug coming out. It has problem with acceleration too especially when you stop at the red light or unable to get out of the snow but once it "pick up" it runs fine. Once in a while a feel hesitations, mostly when im running at high speed, suddenly it feels dragging but it still running at the same speed but I have to step on the clutch more to stay on the same speed. I have the cat. Converter changed d/t being plugged. What would be the problem. I dont know much about cars.
Friday, January 2nd, 2009 AT 10:34 AM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Is a spark plug bursting out of the engine?
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Thursday, March 5th, 2009 AT 4:42 PM
Tiny
LEONEHAL
  • MEMBER
  • 3 POSTS
Hi, I have same problem.
I have KiaMentor-Sedan-1998.
I have problem in car since long time & spend lot of miney to fix it but no one can fix it. Everyone says different solution so please help me.

Problem is.
Vehicale is Surging after runnning 4-5 KM (Ok in cold but surging after hot).
If I stop at traffic signal car start surging with lots of vibration & stop after 15-30 sec.
If I restart car it runs fine without surging for some time.
My mechanic change fuel filter, air filter, adjust throttle vale & sensor but still having same problem.

Have show my car to so many mechanic & they check on computer. No one can find proper solution.

Please help me what should I do.

Looking forward for your reply.
Leo
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Tuesday, June 2nd, 2009 AT 2:41 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Has anyone checked the throttle position sensor or the idle air control valve? Also, have them check the EGR for proper operation.
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Tuesday, June 2nd, 2009 AT 8:23 AM
Tiny
LEONEHAL
  • MEMBER
  • 3 POSTS
Yes they check throttle position sensor & did some settings. It improve 20% but not 100%.
Can I check idle air control valve & EGR myself?

Where is that & what should I do?

Thank you very much for your help.

Leo
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Wednesday, June 3rd, 2009 AT 12:55 AM

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