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Old 05-30-2011, 02:37 PM   #1
pburow58
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my D4 lights stays on and car wont shift...

When i start my car the d4 light will stay on and it wont shift out of second gear. What is making it do this? I know its something with the tranny but i have no clue what it is...can someone plz help. I dont want to ruin my motor or tranny....i dont know if it makes a difference but my motor is a f22a6
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Old 05-30-2011, 02:58 PM   #2
bobbycos
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Quote:
Originally Posted by pburow58 View Post
When i start my car the d4 light will stay on and it wont shift out of second gear. What is making it do this? I know its something with the tranny but i have no clue what it is...can someone plz help. I dont want to ruin my motor or tranny....i dont know if it makes a difference but my motor is a f22a6
tcu might have died and you are in limp mode, to not ruin the tranny don't drive the car for awhile

type tranny in the search area and read the threads

just had the same problem myself
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Old 06-01-2011, 01:57 PM   #3
madmattr6
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Jump the service connector and see if there's any blinking lights on the instrument cluster
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Old 06-01-2011, 06:13 PM   #4
dano28
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With all the excellent electronics manufacturers in Japan, the CB7 TCU's are manufactured by OKI in Swanee Georgia. These are basically garbage and if you need a replacement Honda wants over $700 for what looks like maybe $35 worth of electronics. This is a "refurbished" unit that cost me like $120 and went up in flames . Of course, the seller will not honor their warantee. The unit we now have has 2nd and 4th gears plus reverse. Car is useable but has been reduced to a Hooptie status.

Stupid Honda

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Old 06-01-2011, 07:28 PM   #5
drew12000
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damn. you literally went up in flames! i've seen several tcm. none like this.
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Old 06-02-2011, 06:23 AM   #6
dertywhiteboy
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when you turn the car on, not start it, does the d4 light come and stay on for a second then go off? or does it just blink? if so i had the same problem out of my 1992 honda accord. what i did was simply started with the shift sylenoids and that did not help, second i decided to change the tcu and just went to a local u pull it/ scrapyard and pulled 1 out of a same year honda prelude and the harness plugged strait into the prelude tcu, the only problem with doing it that way is u take the chance of it not working as well but alot of places will give u a 1 week warranty on something like that and they are genarally fairly cheap i paid 25 bucks for mine and its lasted 4 n half years and is still shifting that ol car jus fine
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