hey guys, I run a H22a in a civic EK. I installed a new alternator a couple weeks ago, since then no problem. but yesterday my speedometer stop working, and I know alternator and speed sensor is on the same 7.5 fuse. it was blown.. I replace it and instantly it blow again.

replace it again and unplug the connector at the alternator and start the engine. the fuse did not blown. but as soon as I replug the alternator connector, it blown right away.

did some one ever had the same issue ?

 

Sounds like a wire came loose off of a plug or connector and now is touching metal. You should look around for a broken wire.

Does it only blow with the key on ?

 

yeah it blow only with the key on and with the connector pluged to the alternator

 

Sounds like the alt is just bad. Swap it out under warranty.

Where did you get it from ?

 

Ditto the above^^^ replace the alt. 94