Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

Electrical problem...HELP!!!!!

Thread Tools
 
Search this Thread
 
Old 04-12-2011, 07:43 AM
  #11  
rtintwo
2nd Gear Member
 
rtintwo's Avatar
 
Join Date: Aug 2009
Location: Nebraska
Posts: 475
Default

Replace the cables.
rtintwo is offline  
Old 04-12-2011, 12:37 PM
  #12  
TexasAxMan
4th Gear Member
 
TexasAxMan's Avatar
 
Join Date: Aug 2007
Location: Houston, Texas
Posts: 1,692
Default

Yes.

There are 4 of them:

Battery negative to passenger side of block
Rear of passenger head to firewall
Battery positive to starter solenoid
Starter solenoid to starter motor.
TexasAxMan is offline  
Old 04-12-2011, 09:10 PM
  #13  
jaw1962
Thread Starter
 
jaw1962's Avatar
 
Join Date: Mar 2011
Location: IL
Posts: 47
Default

I got 3 of them. Can you direct me to "rear of passenger head to firewall"? What to you mean by passenger head?
jaw1962 is offline  
Old 04-12-2011, 09:27 PM
  #14  
jaw1962
Thread Starter
 
jaw1962's Avatar
 
Join Date: Mar 2011
Location: IL
Posts: 47
Default

Is "passenger head" the same as the passenger side of the engine block? I'm not seeing any wire attached to the firewall. Any chance someone has a picture with the starting/ed points of this wire?
jaw1962 is offline  
Old 04-12-2011, 09:46 PM
  #15  
Kirklandkie
1st Gear Member
 
Kirklandkie's Avatar
 
Join Date: Mar 2011
Location: CT
Posts: 102
Default

ok when you cleaned said battery terminals, did you actually take them off and use a wire brush on both the terminals and the inside of the leads? that'd be the proper way to clean them verses an aesthetic whip down

-kirk
Kirklandkie is offline  
Old 04-13-2011, 07:55 AM
  #16  
jaw1962
Thread Starter
 
jaw1962's Avatar
 
Join Date: Mar 2011
Location: IL
Posts: 47
Default

yes I took the cables off and cleaned the inside of the leads with high grit sandpaper. and I cleaned the other cable leads the same way, and brushed the posts on the solenoid, starter and block with a wire brush. I did not clean the battery posts as it was a brand new battery. I just bought it on saturday. Is there a need to clean the posts on a new battery? Is there some kind of coating on them? I've never done it before and have never had a problem.
jaw1962 is offline  
Old 04-13-2011, 08:36 AM
  #17  
gjz30075
2nd Gear Member
 
gjz30075's Avatar
 
Join Date: Jun 2005
Location:
Posts: 290
Default

Originally Posted by jaw1962
Is "passenger head" the same as the passenger side of the engine block? I'm not seeing any wire attached to the firewall. Any chance someone has a picture with the starting/ed points of this wire?
Yes, the engine block's head on the passenger side should have a good sized wire attached to the back of it, going to the firewall.
gjz30075 is offline  
Old 04-13-2011, 02:25 PM
  #18  
jaw1962
Thread Starter
 
jaw1962's Avatar
 
Join Date: Mar 2011
Location: IL
Posts: 47
Default

OK, so I'm going to add this 4th wire [attached to the firewall] that seems to be missing. If I can't find a different spot on the engine block, can I use the same mount point as the cable that goes to the battery's negative post?
jaw1962 is offline  
Old 04-13-2011, 03:47 PM
  #19  
Oxnard Montalvo
4th Gear Member
 
Oxnard Montalvo's Avatar
 
Join Date: Sep 2006
Location: 1984
Posts: 1,188
Default

Originally Posted by jaw1962
OK, so I'm going to add this 4th wire [attached to the firewall] that seems to be missing. If I can't find a different spot on the engine block, can I use the same mount point as the cable that goes to the battery's negative post?
Not really necessary. If you didn't have the block grounded it would never start, not be intermittent.

Are the connections good and tight? They must be to ensure a sound electrical path. The clicking and sparking point to poor connections.

Do you have lights now? If not, turn them on and wiggle each connection. If the lights come on you've found the bad one.

I hope you don't have screwed together terminals on the battery, they're crap.


^J.U.N.K.
Oxnard Montalvo is offline  
Old 04-13-2011, 09:35 PM
  #20  
jaw1962
Thread Starter
 
jaw1962's Avatar
 
Join Date: Mar 2011
Location: IL
Posts: 47
Default

well..........i decided to take the starter to autozone to have it tested while i was looking for new cables. they said the test was "inconclusive". i decided the heck with it and bought a new one anyway. i also figured i might as well change the solenoid given how little they cost. new starter + new solenoid + new cables = car starts. i'm going to not get too excited until i know it still starts a week from now. )

thanks to everyone for the suggestions.
jaw1962 is offline  


Quick Reply: Electrical problem...HELP!!!!!



All times are GMT -5. The time now is 10:26 PM.