Hello everybody !

My Trans Am GTA with orginal engine 5.7 TPI from 1989
is having some electrical problems.

The beginning :
I was busy with the radio, its was not working
so i checked all the fuses.. the last fuse,
i put it back, and suddenly the interior lights
gone off... not only that, the power doors buttons
didn't work anymore. and the car won't start,
everything was almost dead.

i ve checked the fuse again, this time
i removed the battery cable.
this could be the reason that the lights gone off..
but all the fuses looks ok.

behind the fusebox there were 3 more fuses..
one of them burnt... i replaced it..
and the car was starting.. very happy,
but for a short time..

the power doors, cruise control, interior lights,
trunk release were still not working,
o yeah, the left turn signal was hanging.
but the power windows was working, and the engine was ok.
dashboard . AC. headlights was working..

i decided to remove the whole dashboard,
and voila... with a friend of mine,
we found some burnt cables...
there were a lot of cables burnt, damn. alright,
we replaced all these cables....

we could fixed the turn signals..
we can use the power doors via the unlock/lock button
ON the car alarm remote but we cannot use the buttons
from the interior...so we replaced the buttons, but still nothing..
they still not work...

the following problems are still there :
- power doors dont work via buttons..
- trunk release button doesnt works.
and if i press this button, you will see on the dashboard,
a brake light ????? how is this possible ?????
So, if i press on the trunk release from the interior,
the BRAKE lights appears at my dashboard ???
there is something wrong, but i can;t still find it out...
- the interior lights are still not working.

and can somebody tell me show a pic of a fusible link,
circuit breakers etc..

i think, the relais could be stuck, is that true ?

Please can somebody help me very soon..
I just recently bought that car, and i want too
feel the power of a V8, of THIS car, mine car...

 

Regarding to this topic,
i ve posted the pics, i ve some question too...

the burnt wires ...


what is this ??



and what is this ?



A friend of mine tells me that these things could be damaged,
is he right ?

and what is this ?
how do you call it ?? look to the arrow !


And this ??

 

bump,

i really need your help sir...

 

bump again,

nobody ????

 

What you need to do is try some troubleshooting. Try hooking 12V+ straight up to the release solenoid in the trunk. Try pressing the button and measure the voltage at it. See what happens. It will only release with the car in park, it's tied into the brake ground, so that may be why your brake light is going off. THere is also a fuse is a floating fuse holder in a mess of wires near the fuse panel. To be clear- its not physically attached to anything, just held in by the two wires. Its for the trunk release, so try that. For power locks, there is a large metal solenoid for the switches, and it must be grounded. It located right under the drivers side kick panel (to the left of your feet). If it isn't screwed to the chassis like it should be then it won't work. Do you even hear them click? If not they may not be getting voltage, or they may not be grounded right, or they may be burnt out. If they click then time to test your unlock motors.

 

Thanks you for your reply,

yes the power door relay is indeed at the driver-side
i tested it with the alarm, its working fine.

the trunk motor is only running when you
open it manually with the key.
but when i push it from the interior,
the brake light will appear...

can you tell me how i can check the dome lights?
these interior lights are not working..

 

I believe the wires are orange and white and run down the drivers side a-pillar. So I'd find them and just trace it back. Make sure the bulbs aren't just blow either. You will probbaly trace it to the fuse panel eventually. Basically for stuff like this you will need to follow the wires with a volt meter and see where it stops getting power. Goodluck, it sucks alot.

 

i ve found a solution for the interior lights, dome lights.
the CTSY fuse was not in the fusebox ??? I pulled the 20 CTSY fuse in the fusebox...

The dome lights are working now..
I ve used the fusebox diagram and
it worked for me a lot..

i ve checked them all but,
there are some incorrect fused
inserted, in the fusebox, at the moment
according to the fusebox diagram.

but i can't remember it anymore
that i pulled the fuse by my self out.

the power doors are still not working fine,
but it moves a little bit while i push on the unlock/lock button..

there are 2 fuses which are incorrect according to the scheme below the text..

INJ 1 must be 10, the fuse in the box is 15 ??
TAIL must be 20, its 15 ?? is this right ??

Its a orginal GTA Trans Am, all the lights are working fine..

And what means INJ 1 and TAIL ??
TAIL lights ?? its working buddy.....
but INJ 1 ? something with injectors ? or



THE SCHEME :



And the fusebox, can you see and correct it ?
are the colors, the amps of the fuse right ?

 

My GTA's trunk release does the same thing, won't work unless the e-brake is pulled. If it is not the brake light will come on telling you to put the e-brake on.

 

aaahhh..
so it normal ? to increase the safety right?

 

Eyyy !!!
You re right !
I just tested it out !
It works indeed only when the E-brake is pulled..

this was never before.
but i think, the cables were not only burnt by me
but by the previous owner...

thanks so much for reply !

Just one more thing left..

the power doors !
i will check the relay tomorrow again.

 

i just recently had problems with the pull down motor on 2 of my GTAs the other day, so i used the diagram for this while troubleshooting.

The solenoid's circuit needs a ground when the release switch is closed (activated). It gets a ground from the ignition switch if it's in the Off position. If not in the Off position, then it needs a ground from another location, which can be the e-brake switch (likely for safety reasons as mentioned) when the e-brake is applied.

Quote from the shop manual for 1988:

With the Park Brake Applied, or with the Ignition Switch Off, depressing the Release Switch will cause current to flow through the Release Relay Coil.

It's possible there was a change or something. One of my Notchbacks with the digital dash does need the e-brake applied, or i get the brake warning lamp light as well. My other 2 Notchbacks, which have the analog cluster, do not need the e-brake applied while the key is Off. They function as the shop manual suggests.

 

okay,
i understand it now better...
thank you very much !

on problem left :
the power doors,

i ve a f-body.nl meeting on 10 juli 2005, as the owner i should
have the car finished on time. cann't drive with a BMW
to the meeting and that too as owner of the f-body.nl

as you want, you can see the car here in the vid
which i made.. its a short compilation..
nothing specials..

=========================================
See my GTA 5.7 TPI 1989 in action
=========================================

 

To answer your other question Inject 1 and Inject 2 are in regard to the fuel injectors. Inject 1 supplies the driver's side bank, while Inject 2 supplies the passenger's side bank.

For the power door locks, when you press either button, do you hear them make noise? All of mine are fairly loud when activated. If so, and because you said they move slowly, i wonder if they're getting worn out or binding. A few of mine are getting lazy and require pushing the button 2-3 times either way before they're fully in the intended position.

 

they are making a little noise.. actually
when i use the interior button, its not moving.

but if i use the alarm unlock/lock button
then you will here it very loud.. ( i ve a car alarm installed)
so it and opens and closed it properly...
i
just tested and revised the power motors,
before and after the burn incident.
the motors are still fine.. and very powerful

i will replace both buttons tommorow..
it could be the relais..
i will check the wires from relais and to the buttons
we will see..

 

and regarding to the injectors,
the fuses in the fusebox do have a another amps
then the fuxebox?

according to the scheme :
INJ 1 must be 10 , the fuse in the box is 15 ??
TAIL must be 20, its 15 ?? is this right ??

 

Inj 1 and Inj 2 should be 10 Amp.
Tail should be 20 Amp.

In general, i would not use fuses that are rated higher than what the circuit calls for as that is defeating part of the purpose of a fuse. You want the fuse to blow if there is a problem, rather than something within or on the circuit.

 

i dont want to blow something again,
so i will check
alright i will remember about the fuse principes, thanks.
tommorow, i will add more updates..

 

Well,
the power door relay was stuck.
all the electronic option in the car is working right now.
if you are still interested to follow this topic,
just go to my site :

http://st27.startlogic.com/~f-bodynl...hp?p=3186#3186

and the project :
http://st27.startlogic.com/~f-bodynl...hp?p=3140#3140

Some text are in dutch, but if you ve any questions
or suggestions, don't hestitate just post your message !
we can all speak english too.

Thanks for help,
The next step is now to install a
-automatic power windows closing module
-and GPS tracking & tracing system.
-DVD player with 6" screen