hyc140532

Well I have been driving my 86 na for abouw a month now. Only problems I have had is hot start problem and 3800 hesistation. Well I drove to my gf house on sat and came out to start the car later and nothing. I turn the key and nothing on the dash lights up. The fuel and battery gauges dont move, there is no sounds or anything. This has never happened to me before so i am stumped. I look under the dash and there are two wire clips that are apart. One clip has a yellow wire and a yellow white wire on it and the other clip is i think blue an pink and blue(might be mistaken). If i hook them together all the warning stay on, the fuel and battery gauge all move up. This is with the key out of the ignition.

I disconnect them cause i know that cant be right. Next thing i find is that the 7.5 room fuse is blown. I searched and found peop[le saying bad ground, losse wire of somthing along the lines of that. My car has no stero deck or speakers in it.

What is the easiest way to find the problem?

Parastie

First, you're going to get banned quickly for bumping a thread this quickly. Bumping a thread within the same hour is against the forum rules.

Secondly, did you replace the fuse? Did it blow again?
Also, if the wiring was ever worked on then the colors may not match any more. If it works with it plugged in, I say leave it. You probably only blew the fuse and need to replace it. If it blows again then you have a wiring problem somewhere and you're going to have to track it down.

Good luck.

hyc140532

my bad on the bump. I need to read the forum rules. I replaced the fuse and it keep blowing. The car runs with the wires plug in or not, they just seemed to ground everything plug together with cant be good.

hyc140532

This is what I have found do far. With the battery disconnected i found a bounce of wires that move the meter. I had it set on 200 on ohm.
Warning Cluster:
1. White with Red Line
2. All Red
3. All Green
4. Black with Yellow Line
5. Blue with White Line
6. Another Black with Yellow Line
7. Red with Black Line
8. All Black

Stereo Stuff
1.Red with Black line

Cigurette Wire
1. All Black

Which of these are supposed to do this and which are bad?

hyc140532

Well I have searched and searched. I have resolder the CPU, and Warning Cluser, Check and replaced all fuses. Tape off every loose wire or connector and still nothing. Last thread got no answers so i though i update and make a new one.

This is what has happened to me. I have had my 7 for about a month now. Been driving it off and on and starting it everyday. I drove to my gf house on a friday. Woke up sat morining to go work on the 7. Put key in igintion and nothing. Thought battery was dead. Found out that the 7.5 room fuse was blown. Replaced it, turned key bam fuse blown. Look under dash looking for loose wire or something. Nothing. Only came up with two connetor that fit together but that have not been together. Remeber car ran for month without these. I hook them together. With no key in igintio the whole warning cluster lights up, gas gauge and battery gauge start to function. I turn key. It trys to start, stop turning key bam blown fuse agian. Keep doing this to get it running it gets running. I disconnect those wires it stays runing. I get it home. It starts with wires disconnected and the warning lights and gauges all function without the wire in also. Next moring go out to start it, bam nothing, not a sound from car. The fuse is blown agian.

I cant find a lose wire anywhere. With new fuses in and it not blowing them i put key in on position. No warning cluster, no gauges, not even a door open buzzer. But headlights and all stll work. My car has no radio and all was taped seperate and not grounded to anything.

What could this be?????????????

Here are pics of wires that plug up and make stuff come on without ket in ignition.

pic of Green white line and Blue redish/pink line Female connection


Pic of where those wires go to


pic of yellow black and yellow white Male Connector


pic of what they go into. top left corner.

Please can someone help????????
This is my first RX7 andfirst rotary. I already went threw the radio, and warning cluster and checked for a grounded out wire. Nothing that wasnt supposed to be a ground. (yes i did unook battery before hand)\

hyc140532

Well here is another udate. I ran outside plugged these in really quick then disscounted them. Now everything works by key like it should. Gauges, warning cluster ect.. Engine turns over. My question now is, does a 1986 NA i think base model have a ignition kill box or something of that nature? And if it does can i by pass it? Do you think this could be my problem if there is one?

hyc140532

Ignore the other post. Went back outside after looking for the deterent thing. Car blew fuse agian. Same room fuse. (the 7.5) i am once agian outta fuses and still have a big paper weight in the driveway. This car is really starting to **** me off.

CAN SOMEONE PLEASE tell wtf is going on. This is very frustrating. I want to put money into modding it , not trying to find some bs wire or something.

Help cure my headache.

Icemark

Stop plugging in that plug, to the other plug. They have nothing to do with each other. You are lucky you have not blown a bunch of fuses and burnt some wires.

The wires on each side of the two plugs don't even match colors... what are you thinking??? Do you want your car smoked???

The plug with the Black/Yellow and Yellow/blue wires is the cruise control clutch switch wires/plug (nothing like feeding ignition to that grn/wht wire)

And normally the blu/red is part of the dome light 12V+ feed circuit, so that should not be hooked up either...

Just don't know what you were thinking.

And does this thread need to be merged with your other one??? did you ask the same questions then???

hyc140532

damn i wont do that agian. Thanks for that imput. What could be my problem though with not starting or doing anythin?

Icemark

well you could have burnt up your ignition switch plugging the two together.

Do you have access to a digtal multi-meter to test the wires??

hyc140532

Yes is do. Which wires to you suggest i check. If my ignition is burnt then i can get one for free, but what woulda caused the fuse to blow in the first place.

Icemark

Threads merged... please don't start multiple threads on the same subject.

Locate the ignition wires coming down from the switch. with the key in the on position the black/white and black/red should have 12 volts on them.

hyc140532

yah i just checked them and both have the right voltage.

Icemark

then you have other blown fuses. You will need to check each and every one of them in both the kick panel fuse box and underhood.

Icemark

and remember you can't just look and see if they are blown. Check them with your meter

hyc140532

thanks ill do that. Ill report back sometime tommorrow night. I gotta get new fuses for the whole car. Might as well even if they are good. I am trying to replace everything from other owner snce he didnt know jack about car. i bout it and owner said motor was bloen. Got it home bought a book and went down the troubleshooting. The plugs where in the wrong place and wires were too.

hyc140532

ok so i said screw it and tested every fuse in the kick panel on the driver side and the big ones under the hood that contain the egi 80a fuse. all fuses i checked are all in working order. checked with a multi meter.

Icemark

with the key on does the Meter and EFI fuses have 12 volts on both sides of the contacts on the top of the fuse???

hyc140532

I will have to check. I know te EFI is the big black one under the hood, but where is the meter fuse. Im sorry if i annoy anyone wth all these questions but i am a newbe and want to do it right the first time.

hyc140532

well im back at it agian tonight. i check the fuses all good. The ignition and efi do get 12v.

Turn the key to n position and no beep. warning cluster, gauges, heater/ac dont come on, fuel pump (when turned to start), turn signals dont work, and windshield wipers dont.

Headligth pop up and work, gauge bzel lights com on with headlights, emergency flashers work, all running lght work.




What could this mean???????

Icemark

It means your test is flawed.

If the meter fuse has 12 volts on both sides of it when the key is in the ON position, then your gauges will work or they are unplugged. easy test to see if they are unplugged: do the dash lights in the gauges light up when the parking lights are on. If they do, then the gauges are plugged in, and your meter fuse is blown.

hyc140532

ok but which one is the meter fuse.

Icemark

The fuse box layouts are found in the FAQ for FC sticky thread at the top of this 2nd gen RX-7 technical section.

in addition:


This is also the layout of the fuse box. It is the same as in the car and also has the power layout of the interior fuse box and ignition switch.

HAILERS

This type problem sometimes is caused by the lack of power to the ignition switch from the engine fuse box.

Other things will work but you won't be able to start the car and your idgit lights will not come on.

The ignition key is fed from a single black wire. That wire has a connector about six to eight inches below the engine fuse box. It is a single wire connector. Blade and socket connetor. Black in color. Just like the black wire. Black. See if it is disconnected. Pull it apart if it is connected and see if the engine fuse box side has 12v or not. If it does have 12v and is conneted up, then go to the ignition switches connectors which are about twelve inches fwd and below the ignition switch. See if the BLACK wire has 12v on it and is/is not connedted to the ignition switch harness.

Write back if something/nothing happens.

Do you know about the free. online, fsm with wiring diagrams? Get one soon. It'll save you time and money.

hyc140532

everything is good there. my dad said e would look at it for me on saturday since it is to dark ut there for him. He used to e a eletrican in the shipyard a long time ago and has a lot of training in **** like that. He is gonna go throw the car with me. Thanks for all the help guys and i will let you know what we find this weekend.

Really upsets me that this just starts happening outta no where becasue i finally got the car running after install new oil cooler lines and am ready to mod it. First time ive had a project car with a seperate daily driver. I will fix this, I will beat the eletrical demons. From wat i understand it is never over whn it comes to fighting them.