Automatic Transmission - Hyundai Forums : Hyundai Forum
 
LinkBack Thread Tools
#1 Old 10-22-2007, 09:09 AM
Junior Member
 
Join Date: Oct 2007
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
yutama
(Thread Starter)
Hi All

I have a problem with my Trajet automatic transmission (A/T). It is get locked on third gear after driving about 10-15 minutes . However after engine shutdown and rest, it goes back to normal, but not for a long time .

Any body has experienced the same thing before? What is the caused and how to fix it up?

Regards
yutama is offline  
Sponsored Links
Advertisement
 
#2 Old 10-22-2007, 05:04 PM
Junior Member
 
Join Date: Oct 2007
Posts: 13
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
adams775
Your transmission is going into Safe Mode! DO NOT drive the car while it is in safe mode. Starting off in 3rd gear could do more harm to the transaxle. Yes, you are right. Recycling the ignition does turn off the safe mode. When in safe mode the torque converter locks and will eventually overheat both converter and transmission. Are you still under warranty? If so you need to take it to Hyundai. If you are not then you need to take your car to autozone and have them check it for codes. They will use a OBDII scanner to check for trouble codes. Once you get your codes then go to HMAservice.com and follow the troubleshooting guide. you must register to get into the site. If you don't have any trouble codes it may be something as simple as your transmission needing a filter and fluid change. When you drop your transmission pan during the filter change it will give you an idea of the health of your transaxle by inspecting the magnets at the bottom of the pan. IF there is excessive metal in the pan then you probably need a new transmission.
adams775 is offline  
#3 Old 10-23-2007, 02:41 PM
Senior Member
 
Join Date: Nov 2005
Location: Amman -Jordan
Trajet XG 2000 GLs
Posts: 374
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
mazen is an unknown quantity at this point

Hi yutama

I had that pain when my transmission sufferred the same problem . the follwing

details from an earlyer thread describe it . if it is an input or an output speed

sensor fault , it is dead easy to replace .



Regards







Hi All

Automatic Transmission (A/T) gets stuck on third gear in many occasions . The

kick down or any lower or higher gear is not possible . after engine shut

down and rest . it goes back to normal , but not for a long time .

Any comment on this is appreciated .

Regards




duke Nov 9 2006, 08:59 AM Post #2


Community Advisor



Group: Community Advisor
Posts: 1,793
Joined: 31-October 04
Member No.: 2,122
Location: Holland Landing, Ontario, Canada
Drives: Y2K Sonata V6
Status: OFFLINE



This is a typical sign of a failing "OUTPUT SPEED SENSOR" of the auto tranny. It could just be a poor contact at the sensor connector.

mazen Nov 13 2006, 02:19 AM Post #3


Full Member



Group: Members
Posts: 160
Joined: 28-November 05
Member No.: 13,213
Location: jordan
Drives: trajet gls 2.0l
Status: ONLINE






Hi Duke

Thanks for the tip , I will investigate this further . but why it

fails on the third gear . is it designed this way .

I understand that the " output speed sensor " is located

on the engine not inside the tranny . Am I right .

Regards

fortsq Nov 15 2006, 03:39 AM Post #4


Newbie



Group: Members
Posts: 11
Joined: 3-November 06
Member No.: 24,056
Location: UK
Drives: 2002 Trajet 2.0 auto
Status: OFFLINE



The output sensor is located in plain veiw at the back and on top of the of the tranny (comes out with a 10mm bolt . It sounds to me as if it is more likely the input sensor that is located at the front on top of the of the tranny (about 4 bolts to undue) under the cable holder for the gear select mech. you may have to remove the airbox to make acess easier both are easily replaced and cost about 130.


mazen Nov 16 2006, 01:17 AM Post #5


Full Member



Group: Members
Posts: 160
Joined: 28-November 05
Member No.: 13,213
Location: jordan
Drives: trajet gls 2.0l
Status: ONLINE






Hi

I will do my homework , and let you know what will happen .

Thanks for assistance guys .



mazen Nov 23 2006, 01:46 AM Post #6


Full Member



Group: Members
Posts: 160
Joined: 28-November 05
Member No.: 13,213
Location: jordan
Drives: trajet gls 2.0l
Status: ONLINE





Hi All

I am still in pain , the fail safe of the auto tranny keeps shifting

to 3rd gear after 10 min . of operation .

I have taking out the input and output sensors and tested them ,

they seem to function properly and they provide an output signal ,

The A/T control relay also function properly and provides the 12v

needed for the 5 solenoids inside the tranny . the connectors

seem to be fine and were cleaned . I still think it is an electrical problem

I think I will soon go to a shope where the problem code can be read

anybody with experience on this , please step forward .



Regards

fortsq Nov 24 2006, 06:47 PM Post #7


Newbie



Group: Members
Posts: 11
Joined: 3-November 06
Member No.: 24,056
Location: UK
Drives: 2002 Trajet 2.0 auto
Status: OFFLINE



You will have to get the fault codes read I had a guy come to the house he charged me 25 and gave me the fault code and the desciption (input turbine sensor) see earlier post for details if the code is PO715 it IS the input sensor Hyundai part #42620-39051 110 + vat

This post has been edited by fortsq: Nov 24 2006, 06:50 PM

mazen Dec 17 2006, 04:01 AM Post #8


Full Member



Group: Members
Posts: 160
Joined: 28-November 05
Member No.: 13,213
Location: jordan
Drives: trajet gls 2.0l
Status: ONLINE





Hi All

Finally, I went to a shope where I can read all the error codes.

I read many due to the experemintation I was doing . I paid 10 usd

and cleared all codes to prepare the reading of the true cause .

After a week or so , the problem happened . I went again to read

the code , which was the Po 720 ( failing output shaft sensor ) .

I bought one from the dealer for 92 usd , and install it my self .

for the past week or so , things are excellant .

What bothers me the most is that a magnatic pick up sensor that

seems to function properly is faulty . I think that this type of sensor

ages . i.e it looses its magnatic properties . This is new to me .

I found a second hand auto tranny with warrenty for only 211 usd

would anybody believe this .



Regards

mazen is offline  
#4 Old 02-26-2008, 05:11 AM
Member
 
Join Date: Feb 2008
Posts: 30
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
baby spice
Quote:
Originally posted by yutama@Oct 22 2007, 09:39 PM
[b]Hi All

I have a problem with my Trajet automatic transmission (A/T). It is get locked on third gear after driving about 10-15 minutes . However after engine shutdown and rest, it goes back to normal, but not for a long time .

Any body has experienced the same thing before? What is the caused and how to fix it up?

Regards
[snapback]115075[/snapback]
hi yutama,

i also have the same problem as yours, my trajet gets stuck on third, i made a mistake and rely on a friend who happens to be a mechanic, and he had the trajet diagnose to a hyundai dealer, the dealer said it was a speed sensor, so he replaced it, and after a year, it went back again, so, i went staright to a hyundai dealer and they said that the mechanic who replaced the sensor replaced the wrong sensor, they found out that the input speed sensor was the culprit. and things went back to normal .....is this problem normal to this models? will they be coming back after a few years?
baby spice is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hyundai Forums : Hyundai Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome