iFixit - Answers With Device "Kia Optima"

2001-2005 Kia Optima: My speedometer and odometer quit working?

Sat, 31 Aug 2024 03:24:47 -0700

As I was driving my speedometer and odometer both quit working is this something computerized or a cable that needs to be replaced?

⟐ Answer accepted August 31, 2024 at 3:24 MST

2001-2005 Kia Optima: Why did my fan's go out?

Thu, 30 Jun 2016 13:14:15 -0700

My 2005 kia had been running hot, so we put in a new thermostat and the fan's went out. what could have caused this?

⟐ Commented June 30, 2016 at 13:14 MST

2001-2005 Kia Optima: My door won't open

Sun, 04 Mar 2018 17:31:50 -0700

My driver's side door is shut and will not open. How do I get the door panel off?

⟐ Commented March 04, 2018 at 17:31 MST

2001-2005 Kia Optima: Optima idles high after Throttle Position sensor replacement.

Mon, 11 Apr 2016 12:10:02 -0700

I replaced the throttle position sensor on my 2005 KIA Optima about a month ago after reading a trouble code. Since I replaced it the engine now idles at 1100 RPM at first start and, after I drive around and then put the vehicle back in park, the engine idles anywhere from 1500 to 2000 RPM. I read online that this has happened to others that have replaced the TPS and it was suggested that they adjust the throttle by loosening the screws and turning the sensor in its mounting point. The screw holes are not elongated to allow such an action. I removed the sensor and checked to make sure that the flanges rested in the correct position and then screwed the sensor back in place. I still have the same end result. I did replace the old sensor back on to the motor to see if there was any change and found none so I swapped the new sensor back in to place. I have changed nothing else on the motor besides the TPS.

⟐ Answered April 11, 2016 at 12:10 MST

2001-2005 Kia Optima: Where is the camshaft postion sensor located?

Wed, 01 May 2024 20:29:22 -0700

I have a 2001 Kia Optima and I cannot find the camshaft positon sensor to replace it. I've spoken with the parts department and they can't even tell me. They gave me the www.kiatechinfo.com website and it show a close up picture, but I don't know what it is. Please can someone please help me?

⟐ Commented May 01, 2024 at 20:29 MST

2001-2005 Kia Optima: code and what it says.

Thu, 11 Jan 2018 08:50:40 -0700

i have a check engine light that stays on and i have gotten the code for it. it is P0455-emmission control gross leak.

ok now can any one tell me where it would leak that bad for the check engine light to come on?? please help.

⟐ Answer accepted January 11, 2018 at 8:50 MST

2001-2005 Kia Optima: 2005 Kia Optima will turn over but wont start

Tue, 15 Dec 2020 19:39:48 -0700

We replaced crank shaft position sensor. Everything is in time. Put it all back together and tried to start it all it does is turn over but start. Any suggestions

⟐ Commented December 15, 2020 at 19:39 MST

2001-2005 Kia Optima: Where is the plug that a diagonistic tool can be put on?

Sat, 04 Nov 2023 21:39:53 -0700

Where is the plug that a diagnostic tool can be put? where exactly is it on a 2001 kia optima? My neighbor has the diagonostic tool but we could not find where to plug it in at? is it under the hood? or under the dash board and do I have to take the dashboard apart if it is there? help someone please.

⟐ Answered November 04, 2023 at 21:39 MST

2001-2005 Kia Optima: Engine tries to turn over but does not. Especially when raining

Sun, 26 Jan 2014 12:34:09 -0700

After I washed my car the engine had a hard time turning over. After starting the car I did not have this problem until it rained recently. When trying to start either the engine tries to turn over or I get a clicking sound like the battery is dying. I believe I need to replace either the battery or alternator was wondering if I could get a more exact direction to go in.

⟐ Answer accepted January 26, 2014 at 12:34 MST

2011-2015 Kia Optima: Is this the oil sensor? Confirmation.

Sun, 30 Mar 2025 15:11:18 -0700

The car is throwing oil level lights periodically while the car is in motion. I did the usual checks where I checked for codes (none), then tried contact cleaner on the connectors under the engine to see if maybe oil caused a bad connection.

I say this because since this one has the TGDI 2L Theta II it has some possible oil consumption issuses. However it is very little and only really shows when you do the oil changes so I do not think the oil is low as when I have checked it is always full or near full with little to no loss in oil capacity.

At this point I am pretty sure it’s the oil sensor given I checked the levels multiple times, found no codes and cleaned the contacts with contact cleaner on both ends.

I already have a source for the part so finding it is not an issue. I just need to confirm I have the right location. If there wasn't some residual short block warranty on this thing since it's a Theta II 2L, I'd have sourced it aftermarket.

⟐ Answer accepted March 30, 2025 at 15:11 MST

2001-2005 Kia Optima: 2005 Kia Optima rear brake pad replacement

Sat, 04 Nov 2023 21:44:03 -0700

How do you push the rear brake pistons back into the caliber to replace the pads. Is the emergency brake cable a problem? Do the pistons screw back in using a special tool?

⟐ Answered November 04, 2023 at 21:44 MST

2001-2005 Kia Optima: thermostat where is it located

Mon, 01 Jun 2020 12:39:33 -0700

Where is the thermostat located on a kia 2005 optima

⟐ Answered June 01, 2020 at 12:39 MST

2011-2015 Kia Optima: What sensor causes this error?

Sun, 01 Mar 2026 21:15:22 -0700

I have redacted the VIN, nothing more

So this issue is not new - the last time it occurred on this car, the mirror was known bad and apparently at the time, intermittent until it hard failed. I replaced the mirror with an aftermarket part and it was good for ~2-3 months after calibration, but the issue has come back. I scanned it, cleared it and outside of the known TPMS codes which persist because at the time I forgot about it, the ADAS code is persistent.

The only other thing I can think here is with the C207354 code coming back is the bumper sensor is at fault. Looking for a second opinion.

⟐ Commented March 01, 2026 at 21:15 MST

2016-Present Kia Optima: Why is my kia misfiring?

Thu, 12 Jun 2025 17:56:11 -0700

I have codes P2017 and P2008

⟐ Answered June 12, 2025 at 17:56 MST

2006-2010 Kia Optima: Engine stalls, belt squeals and battery light comes on when raining.

Tue, 07 May 2024 01:07:18 -0700

My wife’s car is a 2010 Kia Optima. She tells me that when she’s driving in the rain or hits a puddle or a car passes her and splashes water on the passenger side of the vehicle the engine stalls, the steering wheel locks up, the battery light comes on and the belt squeals. The car doesn’t do it when it’s dry. The belts and everything are on the passenger side. I sprayed water on the belt, and other things but can’t get it to do it for me. Any ideas on what the issue may be?

⟐ Commented May 07, 2024 at 1:07 MST

2001-2005 Kia Optima: Does it have one or two camshaft position sensors?

Sat, 28 Aug 2021 07:16:14 -0700

I have a 2002 Kia Optima with the 2.7. Does it have one camshaft position sensor or two? I know of the one on the right side of the block, but is there another one?

⟐ Answered August 28, 2021 at 7:16 MST

2001-2005 Kia Optima: How do I change alternater belt

Sat, 18 Apr 2020 20:54:55 -0700

how do I change the alternater belt on a 05 kia optima that has two belts

⟐ Commented April 18, 2020 at 20:54 MST

2001-2005 Kia Optima: Fuel filter location on 2.4L?

Wed, 04 Dec 2019 13:09:09 -0700

Not by the fuel tank under the rear cabin, no access panel underneath back seat, followed fuel lines and cant seem to find it, having trouble finding it

⟐ Answered December 04, 2019 at 13:09 MST

2006-2010 Kia Optima: Dome light flashing with turn signals

Sun, 22 Sep 2019 06:10:40 -0700

When I use my turn signals it flashes the dome and dash lights and all the outside lights light up like the parking lights are on I have replaced the signal module, fuse box and turn signal switch

⟐ Answered September 22, 2019 at 6:10 MST

2001-2005 Kia Optima: Where is fuel filter located on 2005 optima

Sun, 24 Sep 2017 06:44:09 -0700

where do i find the fuel filter on 2005 optima for replacement

⟐ Commented September 24, 2017 at 6:44 MST