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-   -   supra has no electrical power (http://www.toyota-supra.info/forums/mkiii-supra/20581-supra-has-no-electrical-power.html)

cre 06-10-2012 08:02 PM

And you've physically inspected and tested the other things I listed?

This isn't an alarm issue... not the factory alarm anyway.

Ranma 06-10-2012 08:18 PM

As stupid as this sounds, start at the battery and move forward through the system. Did you check for power on both sides of the fuse? lastly, you did check the ground wire, right?

akue 06-10-2012 10:30 PM

I haven't really looked I've pretty much glanced but as I was taking the postive off the car had got power but the kept cutting back out soo I'm guessing a ground came undone?

Ranma 06-10-2012 11:50 PM

Quote:

Originally Posted by akue (Post 103300)
I haven't really looked I've pretty much glanced but as I was taking the postive off the car had got power but the kept cutting back out soo I'm guessing a ground came undone?

Check the main ground. Don't glance at it take it off and do a proper inspection. It makes sense, a bump and a corroded cable breaks.

It is the main one from the battery to the frame. Mine has a ground right to the frame. Did you try a volt check from the positive to the frame?

akue 06-11-2012 01:25 AM

Ok so the cable was bad it was almost off the ground I put it in a new location from where it broke and still have no power

Ranma 06-11-2012 02:03 AM

Quote:

Originally Posted by akue (Post 103303)
Ok so the cable was bad it was almost off the ground I put it in a new location from where it broke and still have no power

You probably need a new cable, do an ohm check to see if there is any resistance. make sure all of the connection points are clean. need to be sure the cable is connecting a good electrical path from car to ground. did you try a voltage test from positive to body of car? If there is no voltage indicated then the ground is bad.

akue 06-11-2012 02:11 AM

I don't have the tools to even try any of that uhh shit so complicated

Ranma 06-11-2012 03:37 AM

Quote:

Originally Posted by akue (Post 103306)
I don't have the tools to even try any of that uhh shit so complicated

It is a multimeter and very inexpensive. set to 12 volts and put the red wire on the positive terminal and black wire on the frame. If you have a 12 volt or so reading then it is a good ground. How did you check the battery? The ohm setting is used to check conductivity. put one lead on one end and the other on the opposite end. This shows the level of resistance. If it is not max buy a new ground cable.

This is really simple stuff

akue 06-11-2012 03:56 AM

Well as if you cant tell I don't know.much bout cars but I think I'm just gonna replace the whole ground wire anyway where it was grounded befor I cant get the bold out so I have it on the intabk atm so no power still might be where I have it? And I'm not sure my dad checked it ao idk what he did

Ranma 06-11-2012 05:21 PM

It is important to get the ground on the right spot. So which part is bad, the one to the frame or engine or alternator? The part from Toyota is best, I have had awful experience from aftermarket.

What you need to understand is the car is the return for the negative and the alternator. Please be careful, Genius :eek: reversed the cables jumping him. While the computer blew first trying to save the fuse, the main fuse turned to power. I set the engine fuse box on fire and at the gas pump. See God looks after morons and old crew chiefs.

Let me know how it goes.


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