2G Need help jumped car backwards!

[Ashraf]

Hi I'm new to the forum I recently bought a 1999 Mitsubishi eclipse Gsx last summer. Ive always wanted one and had it stored for the winter with the intent on modifying it. I literally got the car out of storage and from sitting the car died while I was driving. Easy fix just jump it well my buddy put the jump box on backwards! Idk what he did but it fried the main 100 amp fuse and the 30 amp ign fuse. I replaced it and attempted to start the car and the 30 amp fried again Idk what to
do. The car won't start. No dash lights dont turn on, headlights work but taillights Dont, wipers don't work radio don't work. If someone can please direct me maybe the ECU fried? Idk any help would be appreciated please and thank you

 

[Lou98GSX]

what i would do is start by unplugging things to see which one is causing the problem . start with the coils , ignition module and so on .

 

[Ashraf]

what i would do is start by unplugging things to see which one is causing the problem . start with the coils , ignition module and so on .[/Q

Sounds good I will try tom do u think I burned the ECU?

 

[Lou98GSX]

anything is possible but the fuse should of protected it .

 

[Ashraf]

anything is possible but the fuse should of protected it .

Well I guess ill hope for the best. I just don't understand why it keeps blowing the 30 amp fuse

 

[Lou98GSX]

it keeps blowing cause what ever that fuse feeds is shorted out .

 

[Ashraf]

it keeps blowing cause what ever that fuse feeds is shorted out .

That fuse feeds to the ignition could it be the starter that's toast?

 

[Lou98GSX]

try to disconnect it to see if the fuse still blows .

you can disconnect the signal spade wire that's on the starter solenoid . if you turn the key and it doesn't blow the fuse then your good .

 

[JS4G63]

Ouch, reverse polarity is not a friend to ECUs.

Hopefully you got lucky, but just in case you didn't:
http://www.ecmtuning.com/wiki/reversepowered2g

That document is referring to a metal-box ECU. I'm not sure if the 99 black-box ECU is more protected than the metal ones or not.

 

[OGDSM1989]

Buy yourself a decent DVOM and a electrical service manaul ... start by checking continuity of wires from ecu to ignition, also as stated above you can pull some fuses to help narrow down non affected areas ... this will be a nightmare. You may want to get ahold of Stangmurder ( Miller import parts ) on here and look for some wire harness that may be easier then tracing all the possible affected areas. You may be able to get another ecu but I would plug it in unless the harness issues are fixed would hate to fry that ecu also ....I just replace a complete harness from a similar "accident" on a 2015 BMW 335 and it was BS but insurance paid 11,000 in parts and labor. We just replaced harnesses instead of tracing wires ..... sorry about your luck and I would kick my "friends" a$$ for that move

 

[Mello]

You must be logged in to view this image or video.

 

[miliman13]

Edit: caught my mistake.
Number one, inspect the ECU. Start there then proceed.