I just bought an 89 civic si for my DD and it has a few problems the main 1 is it seems the gas gauge does not work, next would be the tach also seems to not be working and the turn signal. The signals them self light up and flash with the hazards but not with the lever could this be the actual switch or just the flasher. Help on anyone of the these problems would be greatly appreciated the gas gauge especially lol.

Thx Eric

 

the most likely cause is the fuel sending unit. if your clock works, fuse 1 in the under dash fuse box is good. don't worry you don't have to pull the tank out. you can pull the rear seat (rear bottom) only. this is a part that you can easily find use.

 

Actually my clock doesn't work. Thx for info though i guess i will check all my fuese first then see about a sending unit.

 

You sure gas gauge is on the same fuse as the clock? My clock (Which is on the same fuse as the interior light and stereo) didnt work, but my gas gauge did.

 

that info is directly from the troubleshoot manual