I have a 92 honda accord coupe ex auto. Old trans had steady d4 light and would only move in 4th gear. Had the trans replaced recently and now I start the car and it has a steady d4 light on until the car has sat running for awhile. Maybe 15-20 minutes. While the d4 light is on I manually shift into 1rst to move and once up to decent speed shift up a gear but it goes into 3rd. Just 1rst and third gear when the light is solid. Once the light goes off the car shifts perfectly fine. Im ready to take the car back to the shop. Wth could it be? Let me add they put my old solenoids on the new trans.
-
-
I have a 90 that did s similar thing. I changed the vss (velocity speed sensor) and it fixed it. I say try that then mayb the tcu, before jumpin into the tranny. Or just try and get the error codes. -
TCU... Pull it out open it and see if the capacitors took a crap on you.
Comment
-
I tried the codes and nothing came up. wouldn't the vss mess with the speedo?
I checked the fluid level seems all good.Comment
-
I will check the tcu tomorrow morning. Any other suggestions? Weird how it works and then doesn't work. if it was a bad capacitor would the problem still be intermittent?Comment
-
By the way, thanks for the quick replies.Comment
-
If the D4 light is coming on, and the transmission isn't shifting, then there's something wrong. If there are no codes being thrown when you jump the service connector, then the TCU itself is likely bad. You can repair it if you know what you're doing, or you can replace it.
Most likely, that's the issue. You'd be getting a code otherwise.
Comment
-
deeve thank you. in the morning ill pull the tcu.Comment
-
If you need any help with how to repair it, let me know. I've done quite a few and actually just commented on another post in the begginer section. The one about the "s light".Comment
-
Thanks guys. I would love to repair it. Funny thing is im a welder by trade but have no clue asto how to repair the tcu. Referring to soldering and electronics.Comment
Comment