I need help guys I got pulled over tha other day an while I was waiting for my tickets all my idiot lights light up an I start to hear some type of buzzing where tha panel next to tha fuse box is its a black box that says fb05 I searched it an I read that it's for tha turn signals an some other things but wat I don't under stand is would it not let my car start cuz when I got my tickets an when I went to start to pull out it felt like I had no power I'll give it gas and nuttin it will just sputter around an not go anywhere

 

Please remember to tell us what you are working on. This section is for all gens, so knowing if it is an SA, FB, FC, or FD really helps.

 

On the S4, if the alternator starts to fail it causes the idiot lights to turn on. Also, there is a relay in the CPU that controls this warning feature. This feature could be causing the vibrating sound you hear in that area. The voltage signal needs to be above a certain threshold for the engine circuits to run properly and perhaps this is what caused your problem.

 

sounds like you broke an alternator belt.

 

Ya sorry I forgot to put that it is a 1988 rx7 t2 everything is stock all it has is straight pipe frm tha down pipe to tha tips and a racing beat fcd

 

i agree sounds like a broken belt also,simple fix

 

Question, I know what the FC, and FD are. I do not know the other two, I also understand they have to do with the motors. Can you help me translate? I have an 83 12a, what would mine be? Sorry new to the rotary world.

 

SA/FB (1st generation)

i could never tell the difference between the two

 

I think satch is pointing in the right direction...that your immediate problem is very low voltage. And the other guys are right...if the alternator belt is broken, it's an easy find / easy fix.

Other possibilities:

• Alternator belt is there but loose
• Dirty / loose battery terminals
• Dirty connector between alternator & battery
• Alternator has failed

If the belt is there and tight and battery terrminals are good, before pulling the alternator to have it tested, there is a connector you should check. It is just below the main fuse box on the driver side shock tower in a heavy gauge black wire. It connects the alternator output to the main fuse and ignition switch and from there back to the battery. If it is heavily oxidized (mine was), the power generated by the alternator can't get through.

My voltage never dropped low enough for your symptoms, but almost any electrical load caused the volt meter to drop. You can't see this in your T2 'cause it has the boost gauge instead of volt meter.

 

Oh yeah. About it happening while you were pulled over? By chance was it at night and raining? Worst case electrical load for a weak charging system is engine idling (low alternator output) with brake lights and flashers and headlights and wipers and maybe heater all operating (high load).

BTW, sorry about the ticket.

 

No my belt is good and it wasn't raining an still sun light wit tha ebrake up no lights on an my radio doesn't work so basically I have no loads on my car by besides my car charger an that's it but I'll see labour my alternator even tho I got it bout 3 months ago an I live in Miami so never got to use tha heater

 

So any problems since then or is it stiil the same as when you were pulled over? Maybe it's not an electrial / alternator problem at all. I think it's still worthwhile to check that connector the allows the alternator output to feed back to the battery. But if that's good and the battery & terminals are ok, I'm having trouble seeing it as an electrical problem.

 

Sa=79-80
fb=81-85

 

Hmmm, This sounds like a serious job. I hope that you can find someone to help soon.

 

Hey sorry been busy wit work ya I took my car to a local shop cuz my gaskets blow out so i got him working on my car turned out I had a bad ground an that's wat was blowin my alternators should be gettin her back this week

 

a pulley maybe?

 

No it was no pulleys no my belt poped like how I said I had a bad ground that was shorting out my alternator come on guys if a belt poped do u actually think I'll go throw tha trouble on makeing this thread I think it will be pretty obvious ill be missing a belt when I pop hood or if its a pulley I'll hear it I'm a newb on rx7s but not a newb on cars .

 

should be ether a pully or a belt

 

Again no it was not a pulley or a belt . Bad ground !

 

Man this engine has a mind of its own.

 

Lol sometimes Hopefuly when I get it out this week it'll behave haha