Why is the S3 light in your 1988 Honda Prelude always blinking?

Answer 1

If an '87 is like an '88 at all then i would say that your speed sensor is out. Just to make sure was your speedo bouncing around before and did it just quit? if so then it is your speed sensor. If you don't mind it flashing then get a friend to go with you on the highway and do a 50mph 55mph 60mph and 65mph test and see what rpm you are running then when there is low traffic do a 30 that's how ive been driving mine for the last 6 months

I have an '87 Prelude and I cannot find the S3 light. I've checked my manuals and called the dealer and we're stumped. I found some reference on the web about the S3 flashing and the transmission needing a fluid check. I also saw a reference to the speed sensor and associated issues with the speedometer. I thought this S3 light might be associated with the light on the dashboard for the shift lever's position but my shift indicator uses "P", "D", etc. Where is this light located? Is it the Check Engine Light that's blinking three times? Is it the computer's flashing LED? Z-Gear

What is an S3 light?I have an '87 Prelude and I cannot find the S3 light. I've checked my manuals and called the dealer and we're stumped. I found some reference on the web about the S3 flashing and the transmission needing a fluid check. I also saw a reference to the speed sensor and associated issues with the speedometer. I thought this S3 light might be associated with the light on the dashboard for the shift lever's position but my shift indicator uses "P", "D", etc. Where is this light located? Is it the Check Engine Light that's blinking three times? Is it the computer's flashing LED? Z-Gear