First, it had a transmission replacement a while ago. After the replacement, D4 Blinks everytime I start the car but since it ran fine, so i ignored it.
Now, it runs horrible. From dead stop, it accelerate slow and then suddenly it pulls hard and run out of steam around 40-45mph.
Also, when there is a steep hill, I have to press the pedal hard to build up speed before the hill or it will run out of steam and go like 5mph up that hill.

Is it expensive fixing these? And how hard are they?

I pulled the CEL codes and they are as follow:

1 (one quick flash)

2 (two quick flashes)


7(seven quick flashes)


8(eight quick flashes)


9(nine quick flashes)


15(one long flash follows by 5 quick flashes)


Thank you for reading.




Modified by Silentz at 2:15 PM 4/13/2008

 

I would carefully check over the wire harness around the trans.
Here's a link for you "Trans Codes";
http://img252.imageshack.us/my...j.jpg

 

I checked the wire harness and they are good.
According to this page http://techauto.awardspace.com/transmission.html which is my exact problems. I replaced the valve solenoid assembly and the TCU from another accord and also took out and cleaned the NM and NC speed sensors.

After all those, I reset the computer and start it up and let it ran for around 5-7mins and drove it around the block. I came back and pulled the code again. This time, it displayed 1,2,15.
Code 1 and 2 is the solenoid valve assembly right?
And Code 15 is the TCU board which is in a new like condition with no burned resistor or leaked capacitor.

Mine is a 2drs accord and the TCU + Solenoid valve assembly is from a 4drs accord. Can this be a problem?

Thanks

PS. my original TCU had a very bad capacitor leak, that's why i replaced it.