blinking d4

[Frankiep]

does anyone kno what the blinking d4 light means?

[MR.PHIL]

check your TCU ,did you replace your tranny recently ?

[Accrdwgnguy]

Is your trans shifting weird? or not at all? or just into 2 gears?

Blinking D4 light means there is a problem with the trans.

[Frankiep]

no, i just brought tha car a few months ago, and the light started blinking today. really wanted to kno what it ment.

[Frankiep]

well that sucks!

[MR.PHIL]

i'd recommend you try an other TCU and see if it's still doing the same thing.
how's the tranny shifting?

[deevergote]

It's an indication of an error code. Read the "sticky" threads to learn how to pull the code, or take it to a shop or autoparts store and they'll pull it for you. It might be something simple... or it might be something fairly complicated. Until you pull the code, nobody knows.

[deevergote]

i'd recommend you try an other TCU and see if it's still doing the same thing.
how's the tranny shifting?

It would make more sense to see what the code is saying before he begins replacing parts aimlessly. Diagnose the problem, then fix it. Fixing a problem is difficult when you don't know what the problem is!

[MR.PHIL]

It would make more sense to see what the code is saying before he begins replacing parts aimlessly. Diagnose the problem, then fix it. Fixing a problem is difficult when you don't know what the problem is!

i should have made myself clear (try an other TCU) did not mean to buy an other one,see if he can find someone with an auto tranny who will be willing to let him try the TCU

[Frankiep]

it's shifting fine. the light just started blinking today. i'll take it by the autoparts store tomorrow.
thanks for tha help fellas

[RiDiNgLoW]

yea my 92 EX is doin the same thing...i changed the tranny and its still doin the same thing...i got new computer an tranny comp. and still nothing...its annoying, i'm really trying to solve this problem..................

[Frankiep]

kinda sucks bro. hope i dont have the same porb, but i'll keep u posted

[StoobyMcDooby]

i believe a blinking d4 indicator can mean a bad VSS (vehicle speed sensor)... but as deev mentioned, your next step is going to find out what the code means.

[StoobyMcDooby]

dude I just realized that you are in Raleigh... that's whats up.. go to the Advance Auto on Durant rd or Wakeforest rd by the beltline... they're always most helpful.

[Masamune]

TCU related issue... I agree with pulling the codes and figuring out what they mean. Also, what year is your car? I vaguely remember something about 90-91's with the sport button having this same exact issue. It's usually related with sportmode itself.

I can't verify because I have a 93 SE and the light behind D4 on mine simply doesn't come on anymore Pretty sure the bulb just went out, but I'm not going to pull the whole dash apart to replace one bulb...