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Sorry to ask a question without in intro, but I'm hoping someone here may have some clues for me.
Car: 2000 Kia Sephia; automatic transmission
I am desperate to trouble-shoot "Lucy" and don't know what way to go. A couple of weeks ago, I went to start her and got a chugging sound, having to try a couple of times before she would turn over. Thinking it was a one-off, I noticed that later in the week it happened again, and now happens with regular cause. On occasion she'll start on the first turn of the key.
At times, I will put her in neutral, turn the CD player on and off, or do other "things" prior to her turning over. When I turn the key, the headlights dim to next-to-nothing (did this happen prior to the starting problems? I can't recall ...).
I've added "Heat" to the tank, and still have problems (though yesterday it started straight away two times in a row).
My thoughts are that it's either the fuel supply or electrical. I am thinking of replacing the fuel filter, followed by pump, etc. OR can I maybe clean the connectors on the battery? Can it be the starter or wires between the starter and ignition?
My Dad's not around to help me figure it out and my husband is not the car person in our family. Any help is appreciated!
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I have studied this problem and found no answer from mechanics and Kia dealerships. First I have noticed when there is atmospheric pressure ( Rain, Snow, Over cast , Damp evening air) the car will not start. Second it could be a HOT clear day but I noticed one thing when the FAN kicks on after using the car and shutting it off then restarting with this problem the FAN when the fan kicks on the car will start. So I turn the key and crank it a quick 10 - 15 times before it starts. On hot engine i turn the key until the fan kicks on to start not cranking the starter. NOW Fuel pump this is a mystery fuel pump circuit it may be to replace the pump but the cost is it worth the gamble. Also my feeling is it is the ECU computer sensitivity they say to check the voltage to the cold start injectors when there is a problem. Also I have never sprayed starting fluid in the PCV valve or air cleaner to see if it is a ful problem. I cant wait to get rid of this problem i put 600 into this car timing belt pump and such. Also i changed the temp sensor on the thermostat notta nother same problem. So the problem is either a wiring harness, ECU, Fuel pump( Not Coils i know someone who wasted there money on that.)
Please if anyone knows the correct answer to this awesome problem please let me know. PS this is the fist and last KIA / Hyndia Korean made auto I ever purchase. Toyota Nissan Honda are number one to me.
Last edited by wizard340 : 04-01-2007 at 04:08 PM.
PS this is the fist and last KIA / Hyndia Korean made auto I ever purchase. Toyota Nissan Honda are number one to me.
And when you own one of the other brand cars mentioned, and they give trouble, and poor diagnostics are used, then you'll be swearing never to buy one of them again.
Best of luck with your new car purchase, but beware, they too are just as susceptable to the problems you've encountered with KIA.
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For all 99 -01 Sephia OWNERS after 50k -70k mark ECU- Fuel pump? Wire harness problem mysteries ( anything that is kept secret or remains unexplained or unknown).
my battery terminals are clean and new and my battery is brand new.
1999 Kia Sephia Recalls, Defects, & Problems Kia Global Information System (KGIS)
Did you check the fuel injection relay, although I couldn't imagine that the car would have 2 relays one for cylinders 1&2 and one for cyls 3&4, but you never know, if not then its either a ecu gone bad or damaged wires somewhere between the injection harness and the ECU.
Normally the injecters have 12V+ at them when the engine is on or cranking, its only the earth is switched on/off by the ECU for pulsing, if you can confirm whether 12V+ is at the injector then you know it is wiring or ECU at fault if there is no 12V+ then the power supply is faulty and the ECU is probably OK.
Subject Throttle Body Cleaning (Fuel System - 010)
Description This bulletin provides information relating to throttle body and plate cleaning on all Kia models. Residue from fuel additives and/or carbon deposits that result from normal fuel combustion can accumulate on the throttle body and/or upper combustion chamber over time. Dirty throttle bodies can cause a variety of vehicle drivability concerns and may result in MIL illumination under certain circumstances.
When the engine is started, the incoming air sometimes carries residue back to the throttle body and deposits it just behind the throttle plate because of the sudden drop in air pressure behind the plate.
When the engine is running, crankcase vapors enter through the PCV system and work their way into the intake system. These vapors carry with them residue which accumulates on the idle passages and throttle plate. This build-up eventually blocks the air gap between the throttle plate and throttle body bore, causing less airflow while the throttle plate is closed. Over time, the computer compensates for the reduced airflow with fuel trim adaptive logic adjustments, as it becomes more difficult for the computer to control the idle, especially when coming to a stop or when the throttle is "snapped". Do NOT replace the throttle body before the throttle plates are cleaned for any condition related to fuel trim values.
Throttle Plate Cleaner P/N UM040 CH010
Effective Vehicle Information All Kia models.
Parts Information PART NUMBER INFORMATION:
Note: The Throttle Plate Cleaner and other chemicals are NOT available on Kia’s DCS system and must be ordered through Kia’s Chemical Program phone: 877-267-8083 or fax at 866-542-2436 or at kiachemicals.com.
Service Procedure THROTTLE BODY CLEANING PROCEDURE:
1.Remove the intake duct hose that is connected to the throttle body.
2.Using throttle plate or equivalent , cleaner open the throttle to the Wide-Open-Throttle (WOT) position. Clean out the throttle body bore and throttle plate using a small soft metallic (brass) or stiff bristled brush as necessary.
3.After the cleaning is complete, reinstall air intake duct hose. Be sure all throttle cables are routed correctly then, start the engine. The engine will run rough until all the throttle plate cleaner is burned off from the internal vacuum circuits. Shut engine off.
4.Remove the ECM memory fuse for 10 seconds and Then re-install. This will reset the fuel trim adaptive values. Not all models use the scan tool to clear the adaptive fuel trim values.
Note: Removing the ECU memory fuse will not affect the loss of voltage to other control modules requiring the windows to be initialized, ETS, sunroof, overhead displays, radio station presets.
ECM Memory fuses are as follows:
5.Road test the vehicle approximately 2-3 miles before returning the vehicle to the customer.
He is having starting,, Starved fuel problems. something that every KIA mechanic is clueless over. This is not a battery terminal problem this is a non voltage to the injector problem.
I live with this everyday and my advice to him is trade the car in on a bright and sunny day.
This is a very expensive fix. I provided long term studied information.
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Starting problems: '00 Sephia
Linear Mode
