supra has no electrical power

btwilson86 · 06-12-2012, 04:33 AM

There is no ground wire to the alternator.

Do you have jumper cables? If so, you can use them to bypass your ground wire. Take the negative battery cable off of the battery. Hook one end of the jumper cwble to the negative battery post. Now hook the other end of the jumper cable to the engine (a good place is the hook used for pulling the engine, right next to the alternator). Still no power? Move the jumper cable from the hook to a bolt on the body of the car. If you still have no power after this, then the negative battery cable is most likely NOT the problem.

To diagnose further, you really need to get a multimeter, or at least a test light. Without the proper tools, nobody here will be able to help you.

akue · 06-12-2012, 08:10 AM

Quote:

Originally Posted by btwilson86

There is no ground wire to the alternator.

Do you have jumper cables? If so, you can use them to bypass your ground wire. Take the negative battery cable off of the battery. Hook one end of the jumper cwble to the negative battery post. Now hook the other end of the jumper cable to the engine (a good place is the hook used for pulling the engine, right next to the alternator). Still no power? Move the jumper cable from the hook to a bolt on the body of the car. If you still have no power after this, then the negative battery cable is most likely NOT the problem.

To diagnose further, you really need to get a multimeter, or at least a test light. Without the proper tools, nobody here will be able to help you.

Soo if I hook the jumper cables to the battery and to the ground on my car and get power its the ground? Your saying

btwilson86 · 06-12-2012, 01:05 PM

Yes, but reading your last post it sounds more like you have a bad connection on the positive terminal since you said you briefly had power when removing the positive cable

Green7mgte · 06-12-2012, 01:35 PM

thats good trouble shooting BT

Ranma · 06-12-2012, 03:56 PM

Like the ideal of using a jumper cable as a ground wire. Wish I would of thought of it and guess I missed the part about the terminal. Yes it would be the first thing checked. I would think they are corroded as well. He did say something about a ground wire being off.

With luck it was a loose dirty terminal and a lesson to people to do the simple maintenance. Yea BT you got me beat on troubleshooting.

akue · 06-12-2012, 09:48 PM

Ok soo this fusible link thingy lol where is it I thought it was a fuse but I was wrong I know its supposed to be before the 1st fuse box so where is it?

cre · 06-12-2012, 10:55 PM

The search function on this site works very well.

http://www.toyota-supra.info/forums/...ible-link.html

There are more threads which discuss it too but I'd rather you do the research than retype it all over and over every time someone asks.

06-12-2012, 04:33 AM	#1
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	There is no ground wire to the alternator. Do you have jumper cables? If so, you can use them to bypass your ground wire. Take the negative battery cable off of the battery. Hook one end of the jumper cwble to the negative battery post. Now hook the other end of the jumper cable to the engine (a good place is the hook used for pulling the engine, right next to the alternator). Still no power? Move the jumper cable from the hook to a bolt on the body of the car. If you still have no power after this, then the negative battery cable is most likely NOT the problem. To diagnose further, you really need to get a multimeter, or at least a test light. Without the proper tools, nobody here will be able to help you. __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

06-12-2012, 01:05 PM	#3
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	Yes, but reading your last post it sounds more like you have a bad connection on the positive terminal since you said you briefly had power when removing the positive cable __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

06-12-2012, 01:35 PM	#4
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	thats good trouble shooting BT __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

06-12-2012, 03:56 PM	#5
Ranma 12psi boost Join Date: Jun 2010 Location: Claremore, OK Posts: 326 Blog Entries: 10	Like the ideal of using a jumper cable as a ground wire. Wish I would of thought of it and guess I missed the part about the terminal. Yes it would be the first thing checked. I would think they are corroded as well. He did say something about a ground wire being off. With luck it was a loose dirty terminal and a lesson to people to do the simple maintenance. Yea BT you got me beat on troubleshooting. __________________ 1986 Mk III MA70 7MGE Targa Top 5 Speed Stock Exhaust

06-12-2012, 10:55 PM	#7
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The search function on this site works very well. http://www.toyota-supra.info/forums/...ible-link.html There are more threads which discuss it too but I'd rather you do the research than retype it all over and over every time someone asks. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

06-12-2012, 09:48 PM	#6
akue Stock Join Date: Jun 2012 Location: Illinois Posts: 21	Ok soo this fusible link thingy lol where is it I thought it was a fuse but I was wrong I know its supposed to be before the 1st fuse box so where is it?

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