• Just a reminder that you won't be able to start new posts or reply to existings posts in the Archive forum.

    This is where all the old posts go so they can still be used for reference and searched.
  • Welcome to ClassicBroncos! - You are currently viewing the forums as a GUEST. To take advantage of all the site features, please take a moment to register. It's fast, simple and absolutely free. So please join our community today!
    If you have problems registering or can't log into your account, please contact Admin.

Bad HEI ignition module???

mustangmarty

Bronco Guru
Joined
Apr 1, 2003
Messages
1,229
How do you determine if an HEI ignition module is going bad or not? How do they act when they are going out?
 
Last edited:
OP
OP
M

mustangmarty

Bronco Guru
Joined
Apr 1, 2003
Messages
1,229
Hello... Hello... Hello...

Echo... Echo... Echo...

Is this thing on... on... on... ???
 
OP
OP
M

mustangmarty

Bronco Guru
Joined
Apr 1, 2003
Messages
1,229
Well, thanks anyway ken75ranger for trying anyway. I think I may have figured it out though. I'm thinking that the 12V coil lead wire resting on the exhaust manifold might have had something to do with it. :-[ The wire protector was melted but the wire insulation looked fine. I wonder if the heat alone could have caused a resistance in the 12V lead wire allowing the plugs to fire, but not very efficiently... On pulling out the plugs, they were just starting to foul out from not burning all the fuel in the cylinders. After taking it out onto the highway for a spell, it seems to run better now. We'll see how it acts in the morning
 
Top