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Topic: Help!son tried to start the car, now I have no ignition lights, no power - Any ideas? (Read 1107 times) previous topic - next topic

Help!son tried to start the car, now I have no ignition lights, no power - Any ideas?

My son decided while I was out of town he would try to start my TC that has been sitting in the drive way for the last couple of years. He charged the battery and then installed the battery terminals backwards. He said he saw smoke come up around the started solenoid on the fender before he could unstick the termnal lug. So I ordered a new solenoid figuring this would be shot. But after I put it in, I put the keys in the ignition and turned the key and none of the dash lights came on. Dead as a door . Is it possible the voltage regulator blew? Or is there a fuse-able link or fuse that might be blown? Trouble shooting tips? Thanks

Help!son tried to start the car, now I have no ignition lights, no power - Any ideas?

Reply #1
More than likely it fried a fuse able link or two at the solenoid.
Fox-less at the moment

Help!son tried to start the car, now I have no ignition lights, no power - Any ideas?

Reply #2
check all the fuses, then check the fuse-able links, and the wiring coming from the solenoid as stated above. if they are all good, then we'll start the fun troubleshooting
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Help!son tried to start the car, now I have no ignition lights, no power - Any ideas?

Reply #3
Quote from: hypostang;354693
More than likely it fried a fuse able link or two at the solenoid.


Agreed.

Help!son tried to start the car, now I have no ignition lights, no power - Any ideas?

Reply #4
Is the ignition switch bad?
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Help!son tried to start the car, now I have no ignition lights, no power - Any ideas?

Reply #5
yeah,, thats a probable fault as well,, but if it blew the ign switch assembly, then a lot of heat made it further down stream than we really want and the fuse links failed to open up soon enough.

I can repair your fuse links back to better than oem specs but you gotta start by undoing all the wiring on the solenoid ,
keep the ones that are on one side all together, should have one battery cable on one large threaded stud while the rest of the lugs are on the opposite site.

when you get the lugs off the starter relay,, continuity check from the ring terminal up to and past the fuse link down stream.
the fuse links will branch off as well so make sure you check all branches with an ohm meter.

What we hope is that you say you have found that there is no continuity from the ring terminal to the other side down stream of the fuse links... hoping for the best here.

Help!son tried to start the car, now I have no ignition lights, no power - Any ideas?

Reply #6
On the starter relay, the terminal with the battery cable on it also has a yellow wire and a green wire on it.
The green wire is a fuse link that goes to the alternator. It blew out because the alternator has several diodes that act as a short circuit when you reverse the voltage polarity on them.
You can tell it is blown by the insulation looking a little cooked or you can stretch it because the wire inside is broken.
The battery voltage for the ignition switch and the fuse panel is also through this fuse link.

So the place to start is to replace the fuse link and then see if there any other problems.
The fuse link you need to buy is 14 gauge.
It goes from the starter relay to a splice with three other wires in the cable harness.

 

Help!son tried to start the car, now I have no ignition lights, no power - Any ideas?

Reply #7
When I was 16 I swapped a battery in backwards and it did the exact same thing. I pulled all the fused links off another car at the junkyard and it fired right up after.
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1986 cougar.
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