MacDD

hi everyone, I'm new to this forum i hopes of becoming part of the community and events and solving my cars electrical issues...
i have a 1987, rx7 sport.


so, i've gotten into a fender bender and ruined the front bumper, hood, and headlights ;(.. Ever since then I've been getting a lot of electrical issues. I had one of the cables replaced b/c of the impact of the accident, and I've changed the alternator couple days after. after i changed it, the car made two beeping noise, then the motor turned off but the not radio. Another example, the fan of the car turned on automatically w/o being driven for couple of hours. recently, my car turned off in the middle of the fwy and I was stranded. I took it to the mechanic and we had to change 3 alternators b/c they were over heating, so then they rebuild my original alternator and it charged perfectly. Afterwards, I took to the electrician to get it diagnosed, and it end up being a minor thing, such as the neg. connected w/ one of the pos. cables... It has been fine until now, it won't start the engine but the radio turns on..? Did any of u guys experienced this? What do u guys think it could be, and what do u suggest I should do?

misterstyx69

iTrader: (142)

alot of this makes me ask..
do you have an aftermarket Efan?
did you squish any wires in the front harness?
Did the battery lose it's charge?.
Have you checked for shorting,by doing an Amperage draw test?
Did you check the Main 80 amp fuse on the fuse block in the engine bay to see if it is blown?
It sounds like it is shorting out somewhere and most likely due to the accident.

diabolical1

iTrader: (3)

welcome to the board.

I might not be able to help you with your issue, but if you take nothing else away from this thread, remember this: "shorts are NOT a minor thing!" there is clearly something wrong and if you're not getting any blown fuses, i'd seriously be worried. if your electrician has not mentioned any of this to you, then find someone else. period.

MacDD

i don't know if had a aftermarket Efan.
The day after the accident my car wouldn't turn on, so i took it to a mechanic, and he said the wires got squished and replace them.After, my alternator started getting weak and wasn't recharging as well, and had that replace as well.
i will have to do an amperage draw test and check my fuse box..
hopefully its just something simple and inexpensive.

thanks for your time

MacDD

Thanks =D

yeah, im starting to get a little worry. last time i got stranded in the middle of fwy, and it was a scary experience lol..
the electrician did some electrical testing diagnoses and he mention that everything was fine..

diabolical1

iTrader: (3)

check for shorts.

https://www.rx7club.com/2nd-generati...ecking-408944/

MacDD

its weird because the radio,lights,and even headlights will turn on expect the motor..?
not even a crank, clicking noise, nothing....

Rot005

You said you change battery cables, make sure your negative cable is properly grounded to the chassis and the cable that ground at the starter!

satch

iTrader: (1)

Your car has the factory alarm or not? This knowledge is required to help you.

MacDD

before my car left me stranded i took it to the electrician to have an electrical diagnoses, and what end up being was that some of the cables weren't being grounded well.
what i noticed what the electrician this was he grounded the neg. cable to side of the body, in the fender.


No, i have no alarm in my car yet, but after i solve this electrical issue im thinking about installing one

satch

iTrader: (1)

There's a grounding block containing a number of ground wires and it's located below the trailing coil and bolted to the fender. Make sure this grounding area is solid. The Main Relay gets its ground here and if faulty it will cause the engine to turn off.

Headlights are powered by the fuse in the engine fuse box. It is unrelated to your problem. No power at the Ignition Switch and they would still work.

Make sure your wipers or turn signals work w/key to on. If not it will tell you something.

You have what's called an Interlock Switch. Located at the very top of the clutch pedal. Has ony two wires. One is Black/Green the other is Black/Red (if they are a different color then you are looking at the wrong switch). W/clutch depressed and key to start the B/R wire must have voltage or the starter will not activate. It is incumbent upon you to check this.

The negative battery cable normally is bolted to the driver's fender before going to the starter.

If all else fails make sure the starter solenoid wire ( this is the B/R which comes from the Interlock Switch) is connected firmly to its' prong.

Try these things and see what you get.

TMoney63

iTrader: (1)

Unfortunately, you have a short and relay problem. You will basically have to go through every wire in the damaged area and rewire it almost. Patience will be necessary. I had this issue with an 2001 f250 I had just bought.. Notorious for windshield leaks, had no clue there was an issue but after couple days of raining, radio wouldn't shut off, next the heat wouldn't shut off. Then the engine wouldn't cut. Good luck

MacDD

thanks you guys for your help.
my car left me stranded for 3 days when i parked at my aunts house, and on the last day i called triple AA to take my car to the electrician. as soon we got my car on the flat bed, the tow truck driver got the keys and turned on the car. The motor turned on out of nowhere, and i have been trying to turn it on for those past 3 days...
i then drove to the electrician and everything was normal, and suggest the electrician to check all the ground cable, the cables under the pedal and starter, and even ran it a diagnose test through his devices. Everything appeared to be normal, and the electrician couldn't find the problem

is it worth it taking it to the Mazda dealer mechanic? i think it very expensive lol

diabolical1

iTrader: (3)

if you're saying that your choices are: (A) your electrician guy or (B) a Mazda dealer, then i'm going to have to go off script and say neither. go for choice (C) find a local FC guy that knows his stuff and would be willing to help you. check in the Regional forum and see what (or whom) you can find.

samjaza78

My curiosity is that you keep saying you're taking it to an electrician, not a mechanic. Car wiring and building wiring are two MASSIVELY different kettles of fish.

It sounds like, whatever the problem is, the worst symptoms are intermittent. So what do you keep doing that causes it to happen? (There's usually a common denominator... like hitting a curb/pothole or cutting the wheel too far to one side.)

MacDD

yeah, thats another good alternative plan, so far i joined some clubs through facebook to see if there is anybody near me that experienced the same problem

MacDD

The electrician checked all the grounds and wiring and he said everything was normal... so far my FC has been running good with no electrical problem but your never when it can rebel against you.


what started this electrical issue is that i've got into a fender bender, hitting the front bumper.

misterstyx69

iTrader: (142)

..and that fender bender caused a short that comes and goes.
Look at it like this..(chuckle)
If a Fat guy needs 9 pieces of chicken to survive and you give him 9..then take away ALL the chicken ,,then give him 6..then give him 9..then Nothing..etc..Is he gonna be happy?
That is in essence what you car is doing..getting operational wiring,then shorted wiring,then half assed shorted wiring..and the Beat goes on..
Now,it could be OK now..can't say for sure..maybe shook the wires..
BUT If it comes back,it is a Problem that was done when you had the Fender bender and my GUT tells me that it is the Front Harness that is pinched.
It won't go away if you just think it will,it needs to be addressed.

samjaza78

If I have any viable reason to doubt my car's ability to get me around (like previously leaving me stranded for three days) I fix it. I don't drive it around and pretend nothing's wrong. PFM is not an acceptable diagnosis.

misterstyx69

iTrader: (142)

..FBI..CIA..
what is PFM?

samjaza78

My favorite technical phrase at work.
Pure F*#&ing Magic.

misterstyx69

iTrader: (142)

I'd remember that..but I get CRAFT..(Can't remember a F****n Thing!).
damn!,.now I'm hungry for KD!