Question about 1990 Acura Legend

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My S3 gear in my auto 1990 legend flashes.

In a 1990 auto legend their is a gear selection known as S3/S4. Its like a sport mode or something. anyway, when I put my car into drive and go over 35mph this S3/S4 starts to flash on and off in my instrument gauge. I think this would indecate trannie problems but I can't be sure. What does this flashing light mean?

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6ya6ya
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Posted on Jan 02, 2017

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justuscc
  • 360 Answers

SOURCE: Flashes "D4" and speedometer shows 0 MPH while driving

this sounds like a Transmission Speed Sensor. ive done about 20 of them , common on hondas

Posted on Sep 30, 2008

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nate6556
  • 103 Answers

SOURCE: 1991 Acura Integra S3 light flashes and car won't start.

Try changing your Main Fuse Relay - Almost certain that'll Fixya

Posted on Jul 25, 2009

  • 82 Answers

SOURCE: why does s3 and s4 on integra start flashing

I found this one the www.hondacarforum.com
http://www.hondacarforum.com/honda-technical/28562-i-have-1989-honda-integra-can-any-one-tell-me-what-s4-gear-stick.html

You have a couple of choices on this Honda transmission... D and S modes. Consider the D as the normal Drive mode and the S for Sport mode. The difference between the two is that in "D", the transmission will shift through the gears all the way to 4th gear and at lower rpm shift points. In "S", the transmission will shift at higher rpm levels and will go no higher than 3rd gear and light S3 on the dash. Once the vehicle is in 3rd gear (S3) you can then press the S4 button and the transmission will go into 4th gear (when conditions dictate). I believe there is even an S4 indicator on the dash signifying the trans is in 4th gear

The last line looks like it is the key here though.

If the car thinks its in 4th gear when you are trying to start it, obviously it wouldn't start...you could probably hunt around and see if there is a sensor on the transmission stick that runs the "D" vs "S" mode

Posted on Mar 09, 2010

  • 104 Answers

SOURCE: 89 acura legend v6 s3,s4 has no take off power

You can go out on a country road and listen/count the automatic transmission shift through the gears. Hondas bang when they shift so it should not be too hard. You can also watch the tachometer. Finally, try shifting using the PRNDL. If some gears have failed try having the fluid changed and add Lucas transmission additive as a last resort.

Posted on Aug 21, 2010

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I found this one the www.hondacarforum.com
http://www.hondacarforum.com/honda-technical/28562-i-have-1989-honda-integra-can-any-one-tell-me-what-s4-gear-stick.html

You have a couple of choices on this Honda transmission... D and S modes. Consider the D as the normal Drive mode and the S for Sport mode. The difference between the two is that in "D", the transmission will shift through the gears all the way to 4th gear and at lower rpm shift points. In "S", the transmission will shift at higher rpm levels and will go no higher than 3rd gear and light S3 on the dash. Once the vehicle is in 3rd gear (S3) you can then press the S4 button and the transmission will go into 4th gear (when conditions dictate). I believe there is even an S4 indicator on the dash signifying the trans is in 4th gear

The last line looks like it is the key here though.

If the car thinks its in 4th gear when you are trying to start it, obviously it wouldn't start...you could probably hunt around and see if there is a sensor on the transmission stick that runs the "D" vs "S" mode

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You can go out on a country road and listen/count the automatic transmission shift through the gears. Hondas bang when they shift so it should not be too hard. You can also watch the tachometer. Finally, try shifting using the PRNDL. If some gears have failed try having the fluid changed and add Lucas transmission additive as a last resort.

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I found this one the www.hondacarforum.com
http://www.hondacarforum.com/honda-technical/28562-i-have-1989-honda-integra-can-any-one-tell-me-what-s4-gear-stick.html

You have a couple of choices on this Honda transmission... D and S modes. Consider the D as the normal Drive mode and the S for Sport mode. The difference between the two is that in "D", the transmission will shift through the gears all the way to 4th gear and at lower rpm shift points. In "S", the transmission will shift at higher rpm levels and will go no higher than 3rd gear and light S3 on the dash. Once the vehicle is in 3rd gear (S3) you can then press the S4 button and the transmission will go into 4th gear (when conditions dictate). I believe there is even an S4 indicator on the dash signifying the trans is in 4th gear

The last line looks like it is the key here though.

If the car thinks its in 4th gear when you are trying to start it, obviously it wouldn't start...you could probably hunt around and see if there is a sensor on the transmission stick that runs the "D" vs "S" mode

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