1991 Honda Accord auto transmission stuck in sports mode not shifting
I have a 1991 Honda Accord with auto trans that is stuck in sports mode regardless of the switch position. The transmission will not shift automatically but will shift into first manually and any other position is third gear. This is not all the time but it is about 50/50. Ex: This morning I drove to work with no problem, shifted like it always had.... but 6 hours later, I started the car and the sports light was on and it would not shift properly.... several stops and it would not revert to its old self.... I would not be suprised if I went for a drive at this moment and it worked perfectly again.... I have seen some information on the trans control computer going bad... but this is too intermittent..... I also have read something (but nothing definitive) about the solenoids that control the shifting getting sticky with age..... any one with any experience out there???? how hard is it to lube the solenoids and get them moving freely in the valve body or will just having the trans flushed usually take care of it? THANKS!!!
Re: 1991 Honda Accord auto transmission stuck in sports mode not shifting (Chiovnidca)
I am not familiar with the procedure to check the codes.... now that you mention it... I should have thought to check... first thought would be that the computer has ENGINE fault codes .... but I am sure it would be simple to tie them together... do you know the procedure?.... I will get it asap....
Add me to the list. Mine is doing the EXACT same thing. Someone from the list wrote and offered to sell me a rebuilt TCM, and to tell me how to make sure that this is what I needed. But since I wrote him back he seems to have fallen off the face of the earth. So, will someone please tell me where the TCM is and what to look for? PLEEEEZ?
I plan to try the "disconnect the battery and hope it resets" method in the morning, and maybe a trans flush if I can find a place to do it on short notice.
I plan to travel a LOT in this car this summer, so I gotta get it up to scotch. That and the power mirrors (see my thread) are the only problems I am having. (knock on wood)
Re: 1991 Honda Accord auto transmission stuck in sports mode not shifting (hondadude)
Will not say "case closed" until driving awhile, BUT, I did the "disconnect the battery to reset" thing just now. and the problem SEEMS to be solved at the outset. Let me explain: Previously upon starting, the "S" light would come immediately on and stay on for several minutes, regardless. NOW, upon several restarts, no "S" light and the "S" mode is turning on and off with the switch.
Checked fluid and it is clean and at the appropriate level.
So far so good. If this changes, I will post again with any further developments.
Now, will someone PRETTY PLEASE read my power mirror post and help there?
I am begging here...(OOPS! Someone did...)
Re: 1991 Honda Accord auto transmission stuck in sports mode not shifting (wyldbil)
Followup as promised- the missus and I went a-ridin' this afternoon and evening. "S" light came on when car was started and stayed on for about the first fifteen minutes.Then, "S" light went out and car behaved as it should the rest of the time. So for now, I have to say inconclusive at best.
I wish the guy who offered to sell me a rebuilt TCM would write back. You out there Carlos?
Re: 1991 Honda Accord auto transmission stuck in sports mode not shifting (dcsalling)
Behind the right hand corner of the dash on the passender's side (just below the glove compartment) you will find 2 connectors taped to the wire harness with blue tape ( unless someone previously removed the tape). One is a three wire connector (data link connector) the other is a two wire connector. By jumping the two wires on this connector, you check for engine and transmission codes.
With the ignition switch off, connect the two wires together. Have a pen and paper handy. Turn the ignition switch on. The S light (or D4 light if your car doesn't have the S light) should start to flash a code. Might be a combination of long and short flashes. A long flash stands for 10, and short flashes are 1. For example, if the light blinks: long-short-short-short, then that is a code 13. When you find out what code it is, post it and I can tell you what is going on. BTW, 90-93 Accords have a bad habit of burning out the trans computers. So sometimes you won't get a code. The light will just stay on steady when you jump the connector. Let me know if this is the case, and I'll tell you what to look for.
If the light doesn't blink when you jump the connector, then your TCM (transmission control module) might be bad.
To verify this, remove the TCM ( it's located under the rug on the passenger side bolted to the firewall. You will find two modules bolted to one bracket. The TCM is the smaller of the two. Unbolt it from the bracket. remove the four screws that hold on the cover. Look at the board carefully. If it is bad, you will find a burnt out resistor and leaking capacitor. If this is the case, I can rebuild it for you.
Email at firstname.lastname@example.org and I'll give you more details.
This is the TCM
With the connector pointing down, the bad spot will be in the lower right corner
damn, **** is too damn complicated, i cant believe it throws codes like that, i wonder, it stopped for a while when you disconnected the battery, ok, but then later it came back on and went away again, perhaps something electrical, thats all i can think of, i wouldnt suggest the tranny flush til you can decipher the code it throws at ya...
well if u drive then the car goes from first gear to the third one while the "s" light is on then it might be the "shift control selenoids"
as everyone said before>>>> get the tranny codes and that will show u what's wrong with the tranny. than take it from there. don't just go and change parts.
so get the codes and be done with it.
to find out how to get the codes go to http://www.cb7tuner.com forum is only for 90-93 accords only. there is a thread there with pic that shows u how to check the codes.
so get the codes and come back here
Hiya alb- Thanks for the heads up. Tell me more about these solenoids! (Actual part name, source, co$t, etc.)
UPDATE- Drove the car to the grocery today (7-8 miles) with the "S" light on the whole way and the tranny not shifting. Disconnected the negative battery terminal for the time we were in the store. (30-45 min) Have driven a LOT today since coming out of the store with NO malfunction. While I still haven't taken time to look at the TCM, does anyone have any theories about today's behavior?
Re: 1991 Honda Accord auto transmission stuck in sports mode not shifting
So my Accord is stuck in sports mode. We bought it a year ago and occasionally it would slip into it. At first I could reset the battery, as some of you have tried, and last week it would slip in and out of sports mode about 11 times in two minutes and I discovered that turning the lights,blinkers,high beams,or radio on would get it back out. This week,unfortunetly, it is totally stuck. The button on the gear shift does nothing. Resetting the battery does nothing. And screwing with the lights does nothing. Took it to two shops and they told me to take it to the dealership bc there was nothing they could do. Before I spend more then I paid for the car...any advice?
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