Question about 1991 Honda Accord
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.
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
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
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
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
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
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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