I was having a problem w/ my 79 Bronco. It would start up fine. Soon as it warmed up, and I turned it off, it wouldn't start back up untill it cooled down. I changed all the electrical components under the hood, and the ignition switch. I finely found a little relay box that was next to the starter solenoid. I changed that and it worked great for about a month. Last week it started doing it again. Does anyone know what part this is? And where I can get it. I got this one thru Checkers and I don't know if they gave me the right one. Also does anyone know why it would keep clicking off. Thanks for any help.

 

What happens when you turn the key to START?

 

Engine turns but don't start. But when I let go of the key it sounds like it's going to start for a second. If that makes any since.

 

Everything you describe sounds like a dying ignition module but you should verify that by doing some voltage tests as I'm curious about your ignition switch.

The coil gets full battery voltage in START but a reduced voltage in RUN.

This should help you with expected voltages (I'm assuming a 1970's Duraspark II setup):

 

Like I said she runs great. It's just when I turn it off when hot, sometimes won't start. If I mess w/ that little relay (hope that's the name for it) It'll start back up. The relay sits right below the starter solenoid, it's a little over an inch long, and a half in wide. Has two terminals on it.

 

The first thing to come to mind isn't a relay but is a condenser, it's location makes me suspect it's hooked to the voltage regulator where it would remove alternator whine from the radio.

Pictures would help.

 

Not a condenser, It's a little square block. Condensers are round.

 

I can make a condenser in the shape of a triangle, don't just assume that it isn't something just because it doesn't seem like what you expect it to look like. And in any case, a condenser of the kind you mention would be cylindrical. Good luck finding the cause, I hope you do it soon.

 

Like Chris said. We really need a pic to see what you see. I can't picture in my head anything like you describe under the start relay.

Quote:
Originally Posted by 76f350spercamprspeal

Welcome to FTE, Best Damn Forum EVER!
------------------------
Here's How to Post Pictures:
1. Login to FTE.
2.Click User CP (In the Top Left Hand Corner)
3.(On the Left, There will be a list, The 5th Option Down, will say "Pictures & Albums) Click That.
4.Then, Click Add Album, Enter a title, and description, if ya want to.
5. Click Upload Pictures, Then click Browse, Locate the Files of your truck. (You can add 3 files at a time)
5. Click Upload.
6. Add a description to the individual pictures, then click save.
7. Add more files if ya want.
8. Click The Picture you want to post, it will give you two codes at the bottom, Right Click The Second one (It say's BB Code, Then Say's [IMG]http:blahblahblah...[/IMG])
Then, Once that is highlighted, Right Click, Then Copy, Then Paste it into your post.
You can add up to 30 Images in one FTE Post.
If, Ya need any help, Don't hesitate to ask.


Quote:
Originally Posted by old_dan

You can also go to the "Garage" tab and start an album right here on FTE. After you post pictures to an album, we can look in your album, but you'll also be able to "insert a picture" by pasting in a link to the picture in your album.

It seems awkward, but whenever you "insert a picture" to one of these threads, the forum is looking for the picture somewhere on the web (which is always available) rather than from somewhere on your hard drive (which isn't always available).

 

Thanks guys. I'll try post a picture.

 

OK here's the pictures.

https://www.ford-trucks.com/forums/p...ctureid=101054

 

OK lets try this one more time.

 

I may be wrong but that doesn't look factory to me.

The device looks like a circuit breaker. The wires connected to it, to where do they lead? What colors are they?

 

I know I don't see it anywhere. And beleave me I've looked. But I don't know what to do, by pass it? I really want to thank you for the help though.

 

I would never recommend bypassing a circuit breaker or fuse.

Trace the wires and see where they go.