New 76 280z w/ problems.....pics

[jike]

Hey guys, i just got this 280z a few weeks ago, and it was not running....i will be getting a Haynes manual tomorrow, but i figured i would ask the gurus first...however i have some pics...with some ?'s.....ok.

#1

I found this little Ignition wire had broken off from corrosion etc. the car will not crank if it is unhooked, so i take it that needs to be hooked up

#2

Ok, this hose (looks like a vacuum hose maybe?) was unhooked from that T-Joint.....will this cause the car not to start, if so, where does it hook up?

[jike]

#3

That little nipple looks like something was at one point in it.......am i wrong?

#4

Sorry for the blurry pic, but this one confuses me......i have 2 wires coming out of the back of the Key lock cylinder....1 is hooked up (male/female) the other one is not.....it is a male connector just hanging there. The only thing i can see that it could hook up to is another male connector right next to it. :stupid: ?!!?!? The car still turns over without it hooked up...but wont crank......will that cause problems?

#5

I just figured i would show you guys the mess that i have to figure out what goes where on the battery end! :sick: Somebody shoot me!!!!!!!!!!!!!

Any help is greatly appreciated guys, thanks!

[zman525]

well i have a 76 280z aswell and i have 2 mysterious wires hang out of my ignition ( same as urs) i was screwin around with em and i actually found out they signaled the Beeping sounds wen u turn the car over which im not sure what it means when it beeps but anyways i also dont have that massive vaccum thing you should in the picture. Maybe this has something to do with my car being a cali car? but i do remember seeing a mount for something on the shock tower.

[sblake01]

In #1 that is a fusible link. You need to replace it rather than just solder it or whatever. #2 is the vaccum bottle for your mode door actuator which is for the ac/heater. #3 is a ground wire that should go into on of those wrapped group of wires, at least is does on my car. #4 and #5 I don't have an answer for. But you're right, the PO left you a mess. Maybe this will help. It's the sevice bulletin for the introduction of the 1976 280Z. You need and Acrobat reader and it takes a while to load if you have dial up. There are a couple of charts in the electrical section that may be of some use to you.

http://www.atlanticz.ca/zclub/techtips/76sb/1976_280z_S30_Service_Bulletin.pdf

[jike]

well today we were in a rush before i had to go back to work. I didnt have time to check the board to see if this was correct. But he said that we could just use a screwdriver and connect the + and - terminals on the starter......so we did it and the starter started sparking pretty badly and it must have got pretty darn hot because it burnt the screwdriver! :nervous: I take it thats bad right? :stupid: we didnt remove the sparkplugs or anything, just left it everything hooked up and crossed the starter terminals......should we do something else first?

[webdawg1]

You should probably get a FSM (Factory Service Manual) instead. That other manual won't help you out too much. As far as picture #2, #3 are concerned, the following attached file should help you out quite a bit...looks like the PO "REALLY" did a number on that puppy. FSM will have a really good wiring diagram in the back to help you sort things out...

webdawg1

[cremmenga]

well today we were in a rush before i had to go back to work. I didnt have time to check the board to see if this was correct. But he said that we could just use a screwdriver and connect the + and - terminals on the starter......so we did it and the starter started sparking pretty badly and it must have got pretty darn hot because it burnt the screwdriver! :nervous: I take it thats bad right? :stupid: we didnt remove the sparkplugs or anything, just left it everything hooked up and crossed the starter terminals......should we do something else first?

Thats what i do when there is only me there and I need to turn the engine over and look at the spark plug wires at the same time and my engine is fine! and it is kinda like welding the metals together so the screwdiver will melt, i try to use the same crapy one everytime!! this works in a pinch after you break the steering column lock, you jam a screw driver into the on position and then do that, before the cops get there!!!! kidding kidding

[sblake01]

well today we were in a rush before i had to go back to work. I didnt have time to check the board to see if this was correct. But he said that we could just use a screwdriver and connect the + and - terminals on the starter......so we did it and the starter started sparking pretty badly and it must have got pretty darn hot because it burnt the screwdriver! :nervous: I take it thats bad right? :stupid: we didnt remove the sparkplugs or anything, just left it everything hooked up and crossed the starter terminals......should we do something else first?

When you jump the starter, the ign key must be in the on position if you want it to start. I use a remote starter switch instead of a screwdriver, however. I don't understand 'turns over but won't crank' (in your earlier post). Turns over but won't start? I'm not sure about the wires unhooked at the ign switch, they may just be for the 'key in' and 'seat belt' buzzers like someone already said, but those wires unhooked at the battery kind of worry me. You really need to check out a wiring diagram. I don't have one for a 76 but there is one in that book in the link I posted earlier if I reacall correctly.

[jike]

sorry for the confusion.......thats what i meant, it turns over but it wont start......i am going to work on some new wiring this weekend........so if the key is in the "ON" position and i take a screwdriver and short the starter, it "should" start?

[webdawg1]

The following url should help you out some to get everything sorted out. I'd go ahead and change out those fusible links if I was you. They run about $5.00 each from MSA, VB, ...etc...etc. Attached word document dealing with fusible links might be of some interest also.

http://www.atlanticz.ca/zclub/techtips/wiringdiagrams/76_280z_wiring.gif

webdawg1

Fusible Link Info.doc

[wal280z]

2 is the vaccum bottle for your mode door actuator which is for the ac/heater.

The vacuum line will go into the firewall through the grommet shown in Pic #3, the 'nipple' as you refer to it. Inside, you should find another 'tee' vacuum fitting to connect to.

Pic #3:

That unconnected ground wire fastened to the firewall should connect to the negative battery cable. There also should be another wire with a similar connection as your EFI fusible link, as shown in pic #5.

The short lead that connects to the smaller gauge red wire with the two nylon electrical connections is your EFI fusible link.

Before trying to actually start the car, you should check a few things out prior to actually engaging the starter.

Check for voltage and ground at the EFI control unit. Without it, your car will not start, and if it does (by the help of ether, it won't stay running)

Disconnect the battery cables (as shown in pic 5), remove the EFI '36 pin' connector by pushing up on the steel clip, pulling the connector down, then up to remove.

Reconnect the battery, including the EFI power and ground wires.

A word regarding the EFI connector: The pins are numbered 1 - 35, #1 being the TOP RIGHT PIN. Numbers increase down that column, then continue on at the TOP LEFT down to pin 35 at the BOTTOM LEFT.

With the key turned to "ON", you should have battery voltage at PIN 10 on the EFI connector.

Download the electrical diagram that webdawg posted, or right-click and 'save-as' the following: 76 Wiring Diagram. The '77 and '78 wiring diagrams are too different to follow for your application.

Also, fix the fusible link as suggested by Stephen (sblake01) before doing anything I have suggested. The vacuum line will not keep your car from starting, by the way (BTW)

Also, when doing the checks (tests) that require you to turn the car to 'start', disconnect the yellow wire w/ black stripe on the starter solenoid to save your battery from actually cranking the engine over.

BTW, where are you located? I dare to say that there are more than a few members here that could almost guarantee a running car by sundown on Sunday.

Wayne

[DatsunZsRule]

On this photo (circled in red) that is another fusible link for the electronic fuel injection harness. It needs to be connected to the POS. battery cable end.

The Previous owner sure F'ed that poor thing up Without the Factory Service Manual, you will continue to be lost Hanes manual just doesn't cut it IMO.

Best of luck