Question about 2004 Kia Optima

1 Answer

2005 Kia Optima auto trans problem

I have the LX with the 2.5L 4-cyl.....starting at around 30,000 miles the transmission started upshifting extremely hard when changing out from 3rd to 4th gear at times, so soon after that I had a transmission flush performed, but it has continued. I dropped it off at the Kia dealership 3 times while it was still under warranty but they claimed to not be able to tell anything was wrong with it, so I continued driving it. It now has 70,000 miles and the car still runs excellent except that the transmission continues to slam into gear on upshift sometimes (and if it does it while under acceleration it's quite brutal), so I'm worried about future transmission and/or CV joint problems. I plan on getting the transmission flushed again very soon, but don't have any hope of that fixing the problem anymore than the first flush did, so what else could possibly be causing that? (Also, no check engine lights have ever came on either)

Posted by on

  • jim2317 Oct 20, 2008

    I have a similar issue except a bit more fully blown now and starts up in 3rd gear and when put in reverse it slams into gear and physically jerks the car. I took out the air cleaner and noticed a plug on top of the gearbox has been dislodged AND slightly shattered (possibly from all the jerking around) but i did manage to put the plug in place long enough to completely fix the problem. only problem for me now is that because it is shattered it lkeep slipping out, so I am going out to look for a replacement tomorrow, from what the wreckers tell me it is called a "neutral start plug." Hope that helps.

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I had the same problem... just got my car services and took car to transmission spec. they told me that its the pump inside the tranny thats broken or something. while the pump is working >ie under acceleration it blows fluid out the seal (which seal im unsure) once the fluid level drops below the seal level it wont blow as much fluid out. if you check the levels you should notice that the fluid is well under level. Major job because you need to remove the transmission to get to the problem If that isnt the problem another issue could be a seal on the left or right driveshaft.This isnt as major as the other because you wont need to remove the transmission but time is required to remove the driveshafts to replace the seals. The first problem cost me about $600AU

Posted on Mar 14, 2009

1 Suggested Answer

Zim1308
  • 543 Answers

SOURCE: "transmission "slams" sometimes when upshifting.

you have bad transmission mounts, they are a bit difficult ot replace on that model of Buick as the front mount is in a tight area that requires the engine to be lifted up, out of the engine cradle.

Posted on Apr 20, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have a 2012 Kia optima and it won't start. When I try to start it, it hesitates as if it wants to start but then the alarms goes off. Can you help? Thank you


Do you have any lights lit on dash ? check engine , security anything like that ? If it is the anti-theft system all you can do is have it towed to the dealer !

Feb 16, 2015 | 2012 Kia Optima LX Sedan 2.4L 4-cyl....

1 Answer

How do I reset transaxle lockout on my 2005 kia optima


P0700 is the code you get from the Engine Control Module which sets when there is a transmission problem. The transmission control module will give a more detailed description of the problem to fix.

Feb 16, 2015 | 2005 Kia Optima LX

1 Answer

Need how to set timing belt on kia optima


I had 2006 kia optima 2.4 liter LX, I drove 150000 miles plus, it was over 100,000 miles I changed timing belt, and AC belt, alternator belt is still ok, but it was my fault, I did not change crank shaft balance belt, it next to timing belt, this very important, timing belt and crank shaft balance belt must change same time, you set all mark the same positions, you can see all clear marked
if you had OBD2 scanner is helpful to read all faulty codes if you do it your self repair
if you have any problems about KIA optima, please post on any websites, to share some ideas to other KIA optima owners, like me, I change oil every 2500 miles to make my optima runs smoother
automatic transmission fluid change every year if you put high mileage on your car, optima had hard time to find it own part some time, radiator hoses are still good condition and had hard time to find in any auto part stores in my home town, good luck and thanks for sharing.

Jul 27, 2011 | 2006 Kia Optima

2 Answers

2002 Kia Optima runs great, transmission has started acting irradcally. it will shift and pull in gear for a short time after starting, but after a few minutes it fails to move the car. I've changed...


Keep driving it like that & it won't work at all

When ever you even think you have a transmission
issue,you immediately stop using the vehicle or you
end up rebuilding the trans,your call,your money & lots of it

Ask yourself ---Why would changing the fluid do anything?

Old oil out / New oil in ?

You change trans fluid because it breaks down from the heat
That is it's job,to remove heat or your trans fails

Trans & Power Steering get changed every 3 years & not
over 30,000 miles ever on ALL Vehicles

Jul 27, 2011 | 2002 Kia Optima

1 Answer

2006 Altima 4 cyl 28 000k auto (18 000 m) city driving. dealer recommended changing transmission fluid, power steering fluid, brake fluid?


Having owned a trans repair shop years ago,listen and take heed

You ALWAYS change Trans,Power Steering,EVERY THREE YEARS and
NEVER,EVER,EVER go more than 30,000 miles TOTAL,EVER,ON ANY
VEHICLES,or it is a death sentence

The BRAKE FLUID--2 years NEVER,EVER GO MORE THAN 2 Years

Dec 03, 2010 | 2006 Nissan Altima

1 Answer

Does the 07 kia optima have a serviceable transmission filter if so or dont how to change it


no serviceable filter in transmission. Kia requires trans.fluid to be changed every 30,000 miles. A simple drain and fill will do.

Jul 12, 2009 | 2007 Kia Optima

1 Answer

1996 Corolla Auto Transmission problem


Hi. 2005 Corolla CE. It's normal. They tend to do this when upshifting form 1st to 2nd gear. No timing chain readjustment needed.

96 Corolla. Overdrive not working properly, if not engaging after 45mph constantly. If driving on the city, is normal, but not after 45mph, when the car is trying to engage overdrive in order to save gas and preserve the trans gears. If not able to get help at the dealership, find another one and explain them the situation.

Aug 01, 2008 | 2005 Toyota Corolla

Not finding what you are looking for?
2004 Kia Optima Logo

946 people viewed this question

Ask a Question

Usually answered in minutes!

Top Kia Experts

Colin Stickland
Colin Stickland

Level 3 Expert

21936 Answers

yadayada
yadayada

Level 3 Expert

60667 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

Are you a Kia Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...