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Vans & Minivans Kia Sedona Kia Sedona Starting/Stalling/Idling Problems
159 messages, Last post on Nov 22, 2009 at 5:35 PM
You are in the Kia Sedona Forum. Your Host is Karens
This is the place to talk about idling or stalling problems with the Kia Sedona.
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Hello, I am new here so please bare with me. I need some help. I have a 2005 Kia Sedona with 13000 miles and having some fuel/stalling problems which three different dealerships can not find. The problem is that when you press on the gas from a dead stop, the van does not go. You press the gas throttle all the way down, nothing happens for a couple of seconds, then the car takes off like crazy. The first time I took it to the dealership the service manager felt the problem but could not duplicate it the next day, and could not find any code problems in the computer. They kept the van for a whole week and a half, used half a tank (as per my request, I wanted them to find the problem) but to no avail, the problem did not happen again. They blamed it on a bad batch of gas. I then took the van on vacation and it happened again, took it to another dealership (800 miles away from home) and could not duplicate the problem either. They found the transmission was a little low on oil and thought that it was the problem. Long story short three different Kia dealers can not find the problem, the van is back in the shop and I am waiting for their assessment. Any help or experience with this problem would really be appreciated. When this happens, it feels like the fuel filter is plugged, the injectors are bad or the fuel pump does not work, the weird thing is that it does not happen all the time, and you have no warning when is going to happen, because the engine runs super smooth with no problems until you press on the gas and nothing happens. Thank you
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The factors that contribute to what you are describing include fuel with some water in it, problems with the software in the computer ( a slow response setting to the gas pedal. ) and a bad throttle position sensor. While there are many parts of the car the tie into this the basic deal is this: 1.) your car is running at idle and drawing some volume of air. 2.) You take your foot off the BRAKE and the computer senses this. 3.) You press the gas pedal and the cable on the gas pedal opens a metal butterfly plate( like the old carburetor throttle blades) on the metal air nozzle that is directly after the black plastic air cleaner.This makes more air available to the running engine. 4.) A plastic and electronic "POT" , Potentiometer, normally located on the same pivot shaft where your gas pedal cable is attached ( it will have wires on it )is going to rotate and create a increased electrical value to the engine computer, probably 0 to 5 VDC , with 5 VDC being Wide Open Throttle ( "WOT" ) this tells the computer how fast you are depressing the gas pedal. Also when you stop pressing the gas pedal it tells the computer where you decide to run the motor at. 5.) The computer decides what spark plug firing advance to have , what fuel injector pulse to generate, and basicly it decides what " throttle response" you are going to see. The other sensors on the motor include temperature, Barometric air pressure and crankshaft position. 6.) With all this data the engine computer plugs in your values and your car runs. I personally have seen stalling from a bad TPS ( throttle position sensor- Ford LTD/mustang 1984) I personally have seen bad software ( from the factory ) Ford / Mercury LTD Wagon 1980 / 351 V8 , "Variable Venturi Carb " I personally have seen SLOW throttle response . ( 1984 Ford LTD V-6 Engine computer, I swapped in a 1986 Mustang computer and it ran Great !) I think you should follow these steps: a.) Run the gas tank down to 1/4 or less and then put in two cans of Castle Brand Isopropyl Alcohol "Double Dry " dry Gas. b.) On top of that dry gas put in a full tank of Sunoco 94 octane or similar fuel c.) Remove the existing air cleaner, clean out the black plastic box throughly and install a new KIA air filter from the dealer. ( they are only $ 16 and they are the best.) d.) Remove the rubber tube connecting the Air Filter tube to the metal motor tube. Look inside and make sure there are no rats or mice dead or living , in there. e.) Have Sears Auto or similar put the car on a lift and make sure there are no brakes dragging on the two rear wheels. Put your tire pressure up to 32 PSI. f.) Drive the car around for a few hours and see if there is improvement. If there is no improvement there likely is a problem with the TPS or similar engine sensor. My 2002 Sedona has 77K miles and it has a great deal of torque off the line. When we go over those white lines at the stop lights the engine always slips the wheels with power. Good Luck. |
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Replying to: smulvey (Jul 10, 2006 1:31 pm) I bought my wife a Sedona in 2002, used. Since then the van has had an intermittent problem with stalling / bucking while being driven. The car will just stall out or buck hard as if it wanted to stall but caught again. I've been to the dealer a few times and each time there is nothing in the computer memory or any lights on the dash to indicate a clear cut problem. Today I've had enough. I had my wife write down the mileage before she gave the service department the keys for the day. At the end of the day same old story, we can't find anything wrong and cannot re-create the problem. I call Kia customer service, not exactly the best people to deal with either and explain my concerns about the problem occurring while my wife and 4 year old son are driving along and the potential dangers. To make an already long explanation a bit shorter, I finally had the service man, who by the way only drove the vehicle for 7 miles today, agree to keep the vehicle a week or until the problem could be documented on their diagnostic machines. Oh and I also told him that mileage would be checked each day just to make sure that they are actually doing something about the problem. Well as you can expect they himmed and hawed a bit but agreed to do so. Has anyone else experience this sort of problem with their 2002 Kia Sedona or other years. Thanks for your time and patience. |
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Replying to: bigboyball (Jul 11, 2006 9:17 am) |
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Replying to: smulvey (Jul 10, 2006 1:31 pm) Thank you very much |
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Replying to: bigboyball (Jul 11, 2006 9:17 am) Thank You!!
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Replying to: marjack (Jul 12, 2006 9:59 am)
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Replying to: fmport (Jul 12, 2006 11:33 am) |
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Replying to: bigboyball (Jul 11, 2006 9:17 am) |
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