GT-X FC3S

About a month ago, I took some time and some time of a good friend of mine to replace my pilot bearing. Knowing that my friend was more of a mechanic than I, he offered to help and do most of the tranny drop work while I went out with few other friends. He did a damn good job at that, and got my tranny ready to come off. Well weeks went by and I finally got it all back together with the new pilot bearing in. The car was ready to be fired up. In the mean time while getting the car ready, i had used a lot of power from the battery to get the windows up and down, so it needed a jump. When we went to jump it, i was sitting in my car ready to start it. while two other friends, seeing how nice they were to help me out, went to hook up the jumper cables for me. As one of my friends was hooking up the jumpers to my car, i noticed a little puff of smoke come out of my dash, close to my turbotimer, underneith the steering collum in the little air vent. Then suddenly i hear from my other friend in his car to jump me, and i quote, "what are you doing man, take them off!" I was in shock to find that he accidently put the jumper cables on the wrong terminals, for only about 5 seconds. Quickly without giving too much attention to it he put them back on the right terminals. The car started, but very slowly. Now that the car was started I also came to find out that the pilot bearing did nothing for my car, and I still had problems putting the car into gear with it started. After that much fustration we all pushed the car around to the front and gave up for the night. The next following weeks i went out to start it, and it would always have a low voltage, and would never start up without a jump of some sort. I got both the battery and starter checked out at autozone, they both checked out fine. Now not only do i still have a problem with the hydrolics of my clutch system, but something got fried, and I don't know what. A couple days ago, i had a tow truck come and get my car and take it to Marvelspeed to get looked at. I am told by a friend that went up there that they said it will need some electrical work and it will not start. David marvel also said to my friend that was up there that the injectors are not comming on at all.

To get to the point, my cars electrical system got fried somewhere, but I don't know where. I can still get it to turn over, it just dosn't turn over fast at all, and my injectors don't come on. I could really use some insight right now, has anybody ever had this problem with their car where someone or you accidently crossed terminals and fried some sort of the electrical system. The marvel's replaced all my fuses, and it didn't do anything. Would I need a new ecu, harness? what? Please help me out, i hate hearing from my long time and trusted friend mechanics that it will need to go to an electrical shop.

I'm out of words for this car anymore. I just want it back to normal.

pointers..anything please.


-Marshall

swoop

If injectors aren't working then the ECU is not working. That may be where the problem lies. Try to find an ECU to test swap.

GT-X FC3S

well i'm going to talk to David tomorrow see if i can get any more details.

Oracle

While, as always its iffy at best to diagnose anything without seeing the car, it sounds like you need to replace your engine and body electrical harness. Most likely when the battery terminals were crossed it melted wires together somewhere in your system. (May have melted connectors and fried sensors as well.) Obviously this kind of repair is very expensive. Probably more than what you could get another FC for. The cheapest route will be to pull your harnesses off the car, remove the tape, and inspect the entire length for any signs of damage. Then you should replace wires and connectors as necessary, and reinstall. I suggest you find a good parts car before you start this endeavor.

If you feel like this is beyond you, I would recommend taking it to a proffessional from the start. It's more difficult for someone to go behind you and hunt down all of the problems than it is to locate them in an unmolested car.

Icemark

your buddy blew the ECU when the battery terminals got placed backwards.

I suspect the majority of your electronics are wasted and will need to be replaced. the starter being a simple switch probably was not effected, but I imagine the alt is also blown

Oracle

Icemark is correct. It is probable you ECU is fried, but not necessarily. I've seen cars short out and not blow ECUs before. Cross your fingers!

yearrgh

Didnt' he say he was able to get it started? How can that be if the injectors aren't firing?

Umrswimr

Wow, that sucks. I'm sorry I don't have any better insight.

Icemark

I suspect that since it does not appear that he left it running long, that it was just leaking injectors or gas left over in the intake.

But his statement is rather contradictory, saying that he started it, but now the injectors are not firing.

Which means either the injectors are firing and he just has burnt wiring and possibly fuses and "mavelspeed" mis-diagnosed it, or he has burnt the ECU.

Icemark

And Oracle, you need to fix your signature ASAP!!!!!

10 lines Max...

not the 20+ you got going:
If an admin sees it they will delete your signature without warning. So fix it now (I would have PM'd you but you have your PM's disabled).

hybridracer

It wasnt just gas left in the system, it was running for a good minute or 3.

<--------Idiot who crossed the wires.

Icemark

well then either Marvelspeed mis-diagnosed it or soemthing else has been altered.

If it ran 3 minutes, you can rule out the ECU