I have a Mazda b2300. Manaul5 speed. Everything works fine on it except when I turn on the ac I get a clicking coming from the tranny. I Have narrowed the sound down to the middle of the tranny. I just bought the truck and noticed this problem today when I turned on the ac when the windows were down. Im a bit nervous that it might be the flywheel. I have checked the tranny fluid and dont know what is considered full on the screw used to gauge the tranny fluid amout. Im also having problems buying tranny fluid ( cant seem to find were they sell it) to change it. I have abused google on this problem.It's not the motor mount, that I am sure of. The sound disappears when I push the clutch in, thus leading me to to the tranny. Autozone had nothing for me.The truck call's for mercon 3. Mabye this info will help. I have crawled uder while it is running and had someone press the clutch in and out. The sound is coming from the tranny. I read some google things and I came up with either the flywheel, the truck's muffler is to close in a 95 truck and causing melting of something( I forget name) in tranny. And one other possable thing Transmission Torque Converter. Here's a link to the transmission in it. http://www.therangerstation.com/tech...ishi5speed.pdf Could the people who changed the fluid put in wrong type? So with this any ideas guys?