20 Most Recent 2004 Kia Optima - Page 4 Questions & Answers

Don't think changing either the belt or the alternation would cause those changes. You must have moved or damaged something else in the process. Just what, I have no clue.

If you are able to continue to start the car there is at least some charge getting to the battery. With the car running the battery voltage should be between 12.8 to 14.2 or so. If it is too low it could be the brushes in the alternator are worn out and if you know how to do it you can just replace the brushes and not the whole alternator. The light being on would indicate that the voltage is low.

check for recalls on takata airbags. If not then something is wrong with the sensors or detonators.

check current coils, fuel pump and fuel level. replace air filter also.

I had the exact same sound system in my kia optima & I also had the same problem. The unit has most likely failed as mine did which will require a new unit, you could be very lucky & had the speaker wires fall out or become loose in either case it requires removal of the unit for inspection.

It sounds as if the alarm immobiliser kicked in and you didn't have the key coded to turn it off.did you recently disconnect the battery? Or change the one in the remote.if you did you may need to get an auto locksmith to reconfigure the key to the alarm ...it is worth getting a spare key if you do as this can cost anything from £75 up to have done.

This link should help with this as it has pictures to help also these guys are real world mechanics & deal with these sorts of problems everyday. http://www.2carpros.com/questions/kia-optima-2004-kia-optima-where-and-how-is-the-fuel-filter-changed

Possible direct short in compressor clutch. Disconnect wiring harness from compressor and then turn AC on> If fuse doesn't blow, then problem is in compressor/clutch. Suspect it to be seized. If fuse blows while compressor disconnected then problem in wiring.

This site has parts and diagrams. http://www.kiapartscenter.net/parts/2004/Kia/Sedona/EX?siteid=216495&vehicleid=174552§ion=HVAC

Well , it's probably missing one of three thing's , spark , fuel or compression ! Now you need to find out which one , pull a spark plug wire an hold a screw driver in the end of the plug wire an hold it close to ground an have someone crank the engine over ! don't hold the screw driver by the metal , you don't won't to get zapped . If there is spark spray some carburetor cleaner into the engine at some point ,vacuum hose ,air intake , the throttle plate would be best , there is usually a black tube going from the air filter box to the engine ! A couple of clamps holds it on , take it off an the engine side you should be able to see the throttle plate ! If it tries to start after spraying carb. cleaner in , you have a fuel delivery problem ! Fuel pump relay , fuel pump driver module or the fuel pump it self is bad ! Now if you have spark an sprayed carb. cleaner an it did not try to start you need to check engine compression ! The timing belt may have worn enough for it to jump time a little causing it to be out of time ! Back in the 80's the little cogs on the belt would wear off an the cam shaft wouldn't turn . Back then it was easy to check by taking the distributor cap off a see if it would turn while cranking the engine !

sounds like a/c compressor starting to fail. hope this helps.

Firing order is 1342.

no--- this is the plastic tank cracking and will allow the engine to overheat because of the lack of pressure in the system Best advice is a new radiator as the plastic cracks from age mostly and the radiator is unreliable

P0171 = System too lean, bank 1 - probable cause is - Intake/exhaust leak, Air system, MAF/VAF sensor, fuel pressure pump, injector(s), HO2S. Hope that helps, a little anyway.

Any engine codes coming up? If not could need fuel injectors cleaned.

Did you make sure the belt was installed with the timing marks lined up properly? If you forgot to look at the timing marks it will not start and you may damage the engine trying to start it.