Question about 1991 Honda Accord

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I have a 91 Honda Accord 1 out of every 3 times i start the car the S light comes on the dash and starts blinking and the car does not want to pull what could the problem?be

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  • Honda Master
  • 17,970 Answers

Hi there:
The problem is the transmission computer located under the riht front carpet and its the smaller of the 2 computers. You need to know what the code is. Use a paper clip and jump between the two wire SCS connector. Turn the key on and count any possible flashes in the check engine light. This connector is usually a blue connector and may be taped to the wire harness on that side with blue tape. If not, look behind the kick panel because they get placed behind this panel.


I have a 91 Honda Accord 1 out of every 3 times i  - 2_9_2012_10_55_49_pm.jpg

These cars are very bad about the TCM failing. If you get no flashes when you jump this connector but the light is on, the TCM (Transmission Control Module) has failed. Very common.

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Posted on Feb 09, 2012

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Posted on Jan 02, 2017

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SOURCE: 91 honda accord wagon "s" light stays on? trans won't shift? help!!!!

Last year in the summer of 2007 I had the same problem with my 1991 Accord dx. I replaced the Transmission Control Unit (TCU) and the light went out and the car has been driving fine every since.

Posted on Oct 18, 2008

TheAsian
  • 93 Answers

SOURCE: warning lights on dash of 91 honda accord

Count the number of times the yellow light flashes.

A long flash for ten

A short flash for one

So two long and three short flashes is 23.

Get back to me with the yellow check engine number. That is your CEL (check engine light) CODE

Posted on Dec 10, 2008

mrgreenz
  • 962 Answers

SOURCE: 99 HONDA ACCORD BRAKE LIGHT (DASH) KEEPS COMING ON

You have to have your brake system checked. It is a malfunction. the brake light comes on when the computer module senses something wrong with the main brake system.. If it was the ABS it would be different.

Posted on Feb 16, 2009

emissionwiz
  • 76132 Answers

SOURCE: 91 honda accord cut off

Here are the most common causes of surges, stalls at stops, low erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake

Posted on Apr 06, 2009

  • 7353 Answers

SOURCE: My 91 Honda Accord's speedometer stop working if,

sounds like a possible bad ground wire, you will need to find out where these 3 items ground and see if they have a ground point in common.

Posted on Oct 13, 2009

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the flashing S light on your car is your tcu "transmission control unit" sending a trouble code to your dash this could mean alot of differant things if im not mistaken it will be an electrical problem not mechanical. is your speedometer just randomly jumping? the reason i ask is i drive a 91 as well and my S light is blinking and my speedometer jumps and sometimes doesnt work at all the the code for the S or tcu is 4 which is the vss "vehicle speed censor" eventually your check engine light will probably come on and if the code is 17 then its your vss as well but you can check the code by getting either a paper clip or small wire and using it as a jumper wire there is a little blue wiring harness on the passenger side of your car under the glove box use the paper clip or wire and plug them in "dont worry you wont get shocked ive done this plenty of times and in the rapair manual it tells you to do this" when you do this make sure the paper clip or wire is secure and put you key in the ignition and turn it to where your dash lights up but dont start the car the S light will start to blink count the blinks "1 long blink is 10, 1 small blink is 1" example if the light stays on for a couple of seconds and turns off and then blinks 4 times that would be code 14, if your check engine light blinks count that as well if you need help with checking any of it there is a video on you tube i believe the title is how do you check the check engine light on a 91 honda accord. or something of that nature. if you get the codes tell me what they are I may be able to find them and get more specific about what is goin on I hope this helps

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