I have a 2002 Lexus SC430 with 48,000 original miles and the transmission will not shift into overdrive while driving. I checked transmission fluid---it is full and a red color No warning lights on dash I had the computer ran and no codes came up It has been doing this for about 2 weeks Any suggestions?
Check the kickdown cable adjustment from the valve body to the throttle body-
January, 16, 2012 AT 2:30 AM
Does the 2002 Lexus SC430 have it? I know some about cars but mostly on the older model cars---the new ones have so much electronics and I have not kept up with it? I have also been told it could be the knock sensor or a solenoid? I am trying to get as much info as I can as to what could cause this since I have a friend here that can check whatever things you recommend? Thanks again for any help with this! Mike
January, 16, 2012 AT 2:46 AM
Let's test the coolant temperature sensor-Lexus and Toyota uses the CTS to control the overdrive operation during a certain temperature
January, 19, 2012 AT 6:43 PM
Checked the temperature sensor---no problem there. Any other suggestions?
Also shouldn't some warning light come on since it is not shifting into overdrive at all?
Again thanks for your help!
January, 19, 2012 AT 9:54 PM
Check and test the throttle position and vehicle speed sensors if it checked out-bring it in and have it diagnosed
January, 20, 2012 AT 2:13 AM
where are you located if I need to bring it in?
January, 20, 2012 AT 2:47 AM
I'm in the middle of the Pacific Ocean not on the Mothership
January, 21, 2012 AT 5:55 PM
Checked all you mentioned and no problems? And still no warning lights on the dash---any other things I should check?
January, 21, 2012 AT 8:46 PM
I've given you all I got I'm sorry-
January, 25, 2012 AT 6:55 PM
I took the car to a shop and they ran an extensive diagnostic on the car---they said the transmission valve body needs to be replaced and would run $1500-$2000 installed---he said the part alone was $900?
Does this sound correct?
He showed me on the screen while running the diagnostic the the 5th gear was out---there were no codes found though
Is this very hard to replace