Someone please help me!

[Accord1114]

A few of my friends with 91 Honda Accords have had problems with their ECU and had to have them replaced. Just yesterday while driving from work I noticed that the speedometer suddenly dropped to 0 and did not work at all, however the Tach works fine. After about 5 minutes, the green Sports Mode light flashes on and off repeadely. Then 3-5 minutes after that, the engine check light comes on. When the car is turned off for awhile, and started back up, everything works fine, except for the speedometer which intermitantly works now and then. Someone at the auto parts shop said it wouldn't be the ECU, or my car wouldn't of started at all. Has anyone in here encountered this problem? Can anyone give me any troubleshooting tips on how to fix this? Any input will be greatly appreciated!

[rc1599@attbi.com]

I believe it to be the speed sensor mounted on the top rear of the trans. Checking the codes in the ECU will verify the problem.

[Sleeper]

Yes sir !!! common problem on 90-93 accords...speed sensor mounted on top of tranny below water inlet housing..very easy to change....

[Blazzik03si]

I would agree with the above...Speed sensor almost definately. Had it happen to me myself, on my civic that is.

[sr20det]

seed sensor easy to change