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#1
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66 2+2 dead no electic
Hey Guys - I've been trying to get my old user name CMill2+2 going for a month but the admin wont respond so signed up for a new account.
Anyway need some electrical help from you guys as I suck at diagnosing power issues. I was trying to get my 2+2 up and running again and found I had a dead battery, went down to walmart got another battery and she turned right over and started up after sitting for 5 years. My son was watching the engine and yelled "shut it off now", the rear carb was squirting gas. So got the carbs rebuilt 2 weeks later while installing them I accidentally hit the power wire on the back of the alternator with my wrench while tightening down the front carb and it sparked. Finished up not thinking that would have done anything but when I went in to start her up to check for fuel leaks there is no power, I mean nothing the headlights don't even turn on. Tested battery good, picked up another alternator still nothing since there isn't any fuses or anything under this hood I'm now not sure where to go next. Anybody run into this before? Any help you can give would be greatly appreciated. |
#2
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The main power that goes to the alternator (red wire?) connects to a bunch of other wires in a wiring loom behind the alternator. (tape maybe?)
Possibly it melted there or came apart where it doesn't feed the rest of the car. One other thing is the regulator may have screwed up, but would think there would still be power to car at least in some spots.
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#3
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Check the fusible-link wire. Doesn't take much of a short to blow it out.
Clay |
#4
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Does it have a fusible link in the harness that could have gotten fried?
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#5
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I didn't see a reference to a fusible link.
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#6
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I don't see a fusible link in there anywhere, I'm going to pull as much of the harness out to inspect.
Do you think it could have fried the Starter solenoid? |
#7
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Solenoid may be OK, but it might have fried the wire to it?
Check with voltmeter where you have 12 volts and don't? (probably 12 volts to starter, but none from starter to alternator?)
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#8
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Check the wire going to the main terminal on the starter
__________________
The difference between inlaws and outlaws? Outlaws are wanted |
#9
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I looked at a '65 diagram...there is a "shunt" which in the same location as a fusible link. It's purpose is to feed the ammeter, and is actually a small resistance which can be damaged by a high current blast, which is what you did. Follow the cable from the alternator to where it spliced in to other wires...that's your spot.
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"...out to my ol'55, I pulled away slowly, feeling so holy, god knows i was feeling alive"....written by Tom Wait from the Eagles' Live From The Forum |
#10
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See if you can find a new or good engine harness. It won't take long to swap it. I did it to my 65 2+2.
__________________
The difference between inlaws and outlaws? Outlaws are wanted |
#11
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Fairly sure a 66 Pontiac will have an inline white plastic fuse holder in the main power line going to the alternator. Should be a 30-35 amp glass fuse in there. If you shorted the alternator power wire, you almost certainly fried that fuse. it is generally tucked near the front of the driver side valve cover. Sometimes it's a little further back in the harness that runs down the inside of the left valve cover rail. My guess is if you put a volt meter on the alternator power terminal, it will read 0.
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