Wild Bill Massey

iTrader: (2)

So I have a 91 Vert and the CPU was bad, so while I was stripping another 91 Vert the other day, I thought I would try the CPU from it, and it worked. I had high beams, door dinger, key illumination, and the alarm worked. Awesome!

A day later the CPU quite working. Now when I unplug the biggest plug, wait a few seconds, and plug it back in, I get door ding and key illumination for about a second, then nothing.

The 4 way flasher plug works regardless, but nothing else.

Any clues to what this could be?

Also, anyone have a link to a 91 Workshop manual, I have an 89 manual, but it describes the plugs wrong, I think because the 91 has Airbag.

jackhild59

iTrader: (7)

The open relay's go bad in the cpu. Supposedly you can file the contacts, but I just created my own latching circuit for the high beams.

https://www.rx7club.com/showthread.p...ight=high+beam

https://www.rx7club.com/showthread.p...92#post9214292

Good Luck!

BTW, Bill I still need that gas tank and straps we discussed on PM over on the other board, I just cannot get down to SA until the second week of October.

TheAdrian

Having the same issues with my 91 vert. I'll be checking back and post if I find anything elsewhere.

jjcobm

iTrader: (18)

I just put a new CPU board from mazdatrix in the vert when I had issues with mine. The older factory boards were badly designed, seems like the new boards have better components and better built in general, they look almost 50% different from the factory boards.

Wild Bill Massey

iTrader: (2)

Yeah, I am just gonna order a new one. I got some electronics spray and cleaned the board and re soldered the points, and it worked for about 5 minutes, and is back doing the same thing. I just wanted to make sure it wasn't my wiring, but definitely seems to be the board. Funny part is I have about 6 of these at the shop, and all of them do the same thing. These things are horrible. I have about 20 wiper switches that don't work, but at least those can be fixed.

TheAdrian

You don't by any chance have the part number, do you?

Wild Bill Massey

iTrader: (2)

FC66-67-5640 is with Airbag

FC01-67-5640 is without Airbag

TheAdrian

Thank you very much.