Question about 2003 Kia Sedona

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Kia Sedona 2003. Timming belt ''exploded''. It was all repaired. The heads were sent for inspection and they found 4 bented valves. Everything is back to normal, except that when I'm in DRIVE (or REVERSE position) and completly stop, the motor shakes a lot and the RPM becomes very low. As soon as I give a little gas, it stops shaking. Setting the iddle RPM higher doesn't help. It was not shaking and getting that low, before the big repair.

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  • Andre Taillefer Oct 29, 2009

    I've received many suggestions and all are now checked. I've payed for the help of experts, and did receive a few good suggestions but none brought me to a solution. Please read carefully my text as I was saying that the RPM is very very low, and the motor shakes quite abnormally, ONLY when the transmission is at "D" (drive) or "R" and the vehicule is at complete stop. I received many comments about the gas line but if it was that, the motor would continue the problem at "P" (park) position, but the motor regain it's normal RPM when at Park. All 24 valves were rechecked today. Gas line is OK. What could cause this problem??? The problem was not there before the timing belt broke so it must be related to something caused by the incident, or by the repair of it.



    Thanks



    Andre

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It would appear you may have a vacuum leak, recheck that all fittings have something plugged into them.
there are other issues it could be but make sure all vacuum lines are attached, also what colour is the exhaust smoke coming out of the tailpipe. are they any other issues when you are driving as well ?

Posted on Nov 01, 2009

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Greetings Taiandre:
Check your oil level on your oil stick and make sure it is at or near the full level. Also check to see if you have a missing or leaking vacuum hose. Take the vehicle back to the shop and let them check out their work with a compression test. They may also have to check the distributor and make sure it was reset properly into the engine. Your spark plugs might not be gapped properly and is fouled or the spark plug wires may not be in the correct firing order or may be worn. Check your fuel filter while you are at it, because a clogged fuel filter that has dirt in it can cause the engine to be gas starved and not getting enough fuel and give you problems. I hope this helps you. Good Luck

Posted on Oct 12, 2009

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Have the trans checked for possible damage. There may have been more damage than just the engine or if the motor was removed the torque convertor may not have been aligned correctly when it was reassembled.

Posted on Oct 11, 2009

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HI, this will usually happen if the valve timing was not set correctly during the re assembly of the valve train. Verify the timing buy returning your vehicle to the service shop that repaired the engine recently. they are responsible for the correct assembly of the engine in this case.

I would also advise to replace the fuel pump as well. There may be some issues here with the transfer of fuel, which can cause pressure problems.


Lastly, verify that the spark plug wires and plugs are not worn. Make sure that the wire sets are not crossed, and are connected to the correct plug to insure the proper ignition timing.

Posted on Oct 11, 2009

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I would contact the repair station by phone and written letter, explain the problem, and tell them you want it repaired correctly.

If they fail to act, contact another garage for an estimate to repair the damage, and then file a small claims action agains the company that failed to do the repair.

There is no way for me to diagnose the problem online like this

Posted on Oct 11, 2009

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I would suspect a vacuum leak. Check all the vacuum hose connections for leaks, cracks, or one was let off. It can also be an intake manifold leak if you did not install the gasket properly.

Posted on Oct 11, 2009

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I hope it is not suffering from fuel problem. Just have it checked. because low RPM means less fuel at idling. otherwise as you have mentioned that when you rev it up a little the vibrations of the engine stop. the injectors could be not supplying enough fuel. Also check the timing.

Posted on Oct 11, 2009

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Please it is only a coincidence that you repaired the timing belt and this is happening.

The fuel pump is losing pressure and there might be some sort of blockage in the fuel line.

Take the car for a scan as well and email me on onifadeadewunmi@hotmail.com

Good luck.

Posted on Oct 11, 2009

  • Onifade Adewunmi
    Onifade Adewunmi Oct 30, 2009

    Please you might need to take the car for a scan but with the information you supplied so far, I can solemly tell that the idle control solenoid is bad.

    Have some experts check for you at a nearby garage.

    Good luck.


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What you should do is go through the timing belt procedure again and pay very close attention to the timing marks and/or alignment.  One clog on the serpentine would cause out of time issues.

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