Byebye Alarm, Hello No Start

[YeaJimi]

Hey all, I've got a 79 280zx on my hands and I am experiancing a crank but no start condtion. The problem stems from removing the antique alarm system that was in it. I guess I can't just let things be.

 

Anyways I picked up a FSM and am going through checking my connections but I am still baffelled.

 

As you can see from the pic, the brown wire is "spliced" into the black/white one. What I havn't been able to identify is exactly what the blue wire on the right hand side of the picture goes to?

 

What you may notice from that picture above is a missing condenser. I recently picked one up from the local j/y and want put it back in place. Can I just put it in as is or do I need to give it a charge prior to installation? I was also wondering does the one side of it ground and the other get installed on the black/white wire? There isn't much info besides the pullout wiring diagram.

 

Originally I was diagnosing this crank/no start with a FSM from an 82. This (possibly wrong) showed that I only had about 7 or 8 volts at the IC unit while cranking. Is this what the condenser affects (durning start up)?

 

 

One last thing...

Right over the A/c compressor, I assume that is the magnetic clutch wiring for an intermittant signal but what does the blue wire connect to?

[YeaJimi]

C'mon guys its a question about the stock wiring in a 280zx. You are telling me no one knows anything??

[spotfitz]

Hope this helps.

http://autozone.com/images/cds/gif/large/0900823d801d1d97.gif

Most wiring diagrams can be found at autozone.com under Vehicle Repair Guides.

[YeaJimi]

Nope not really. Ive got the FSM and it shows the same thing. It shows the wiring going to the dizzy but the only wire actually connected to it was the one coming from the ignition coil. I was hoping that someone could verify by looking under their hood.

[spotfitz]

Make you a deal. I have a '79 in my driveway at the house. I'll take a look once I get home, after going to the farmers market. Next time I see you, you owe me a beer!

I would be willing to bet money that the blue wire by the coil goes to the blue wire on the a/c clutch.

I'll check that out aswell.

Reply back or pm me incase I get side tracked before getting home. I always check my email.

[roger.svoboda]

83zx n/a. got a blue and a black/white to the coil. Prolly 16 gage. 18 gage blk/wht goes to condenser. tother end probably goes to the dizzy. Didn't feel like getting dirty so early to find out. A/C compressor has a yellow wire which transitiions to blue about 8" from the compressor itself. All above wire descriptions are coming out of the original factory harness. This car was never worked on by shade tree mechanics cause one owner with money to spend only had qualified guys to work on it.

[YeaJimi]

Hey Spot did you ever manage to take a look for me?

[spotfitz]

Hey Spot did you ever manage to take a look for me?

 

Crap.

That was the same day my 16 year old cat died. Sorry, I forgot all about you.

PM me as a reminder. I get off work in about an hour. Worse comes to worse, I get off at 10A.M. Friday(as usual) so if I miss it tonight I can get you some shots tomorrow morning.

[spotfitz]

YeaJimi,

I didn't get a PM from you. If you don't know how, PM me LOL

spotfitz@yahoo.com for reference.

 

blade=circle crimp connection with hole for stud

bullet(male)=well, just like it sounds, but with teflon(oops, rubber boot ~

All the connections coming out of the loom are under the coil, which tells me by your pics someone(you probably) have pulled them out to gain access. Also, if the connections are still on the wires you can usually figure out where they go without a wiring diagram. It's almost idiot proof because they didn't include any of the same connections coming out of any of the same spots. IE, female of the same color coming out of the same general location , but could have male of the same color coming out of the same location within a loom.

 

from main loom-->components

1)black blade--> - coil

2)blue blade--> + coil

 

3)yellow female bullet-->blue a/c compressor

4)black male bullet-->white condencer(thing your missing)

5)black female bullet-->blue condencer(thing your missing)

6)white/black stripe female bullet--> acc?(under TB)

Ok, this vehicle is Very original '79 280ZX BUT, the previous owner's wife took at it with a knife and cut ALL spark plug wires, vacuum lines and almost all wires up on the intake and some in other places(why only I have keys to MY garage). So, #4 was cut and #5 was cut, but #5 still had the black bullet connected to it and wouldn't reach the TB. #4 can only reach the loom.

Hope this helps and again sorry for taking so long to get back with you(I now owe YOU a beer). One good thing for the delay. I FINALLY got my '74 started for the first time in 2 1/2 years since starting the rebuild. I'll be updating my "update" post and try to hook up with BigPhil and get some video of the maiden voyage. Now I'm back out in the garage and install my new brake booster..

Let me know if I can help out more. It doesn't take but afew seconds to pull the cover off the car. I sometimes need a remind, like during the holiday rush..

[YeaJimi]

Ok so I threw some mspaint ontop of my old pic. I did have a loose yellow wire in that harness but it is not pictured. So that explains two things . I'm pretty sure there is a positve and a negative side to the condenser. The one I got from the local jy has a blue and a black ends. Ill take a look tomorrow at which type connectors they have on the wire ends. The one end that heads to the distributor looks like it just acts as a ground but I could be wrong.

 

So it seems the one last thing I have to ask is... what is that loose blue wire from? haha you've been very helpful already. Thanks in advance.

[YeaJimi]

UPDATE:

 

After throwing the capacitor in place she lives! But then dies after coming off of start to on. haha well at least thats one problem down.