Help '86 Bronco ignition problem??? - Off-Road Forums & Discussion Groups
Ford 67-96 F-Series, 78-96 Bronco All discussions of 67-96 F-Series Trucks and 78-96 Broncos

 
LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 02-05-2001, 11:59 AM
**DONOTDELETE**
Guest
 
Posts: n/a
Help \'86 Bronco ignition problem???

I rebuilt my carb 1 year ago and the truck ran fine for 6 months. Now for the last 6-months the truck will shut off while driving, it doesn't stutter or hesitate, it just shuts off like you turn the key off. When you try to re-start it it acts like there is an electrical power drain, lights dim and the starter turns over slowly. It will start but only for 1 second and immediately shut off again. It will do this 5 or 6 times before it will finally stay running. Eventually, as you are driving, this sequence will be repeated. I started trouble shooting at the carb, it is pumping fuel even when the problem occurs so I ruled carb problems out. Last night I replaced the positive battery cable andI replaced the ignition coil. I thought the coil might be cutting out but this did not fix the problem. I am now starting to wonder if I have a bad wire somewhere. The engine and wire harness are original from 1986. Something is occasionally draining the electrical power. Bad ground? Any ideas out there????

Sponsored Links
Advertisement
 
post #2 of (permalink) Old 02-05-2001, 06:59 PM
**DONOTDELETE**
Guest
 
Posts: n/a
Re: Help \'86 Bronco ignition problem???

You mite look at the brain mine did that and the brain was bad only about 25.00 not bad . good luck Bill

post #3 of (permalink) Old 02-05-2001, 07:36 PM
 
Join Date: Sep 2000
Posts: 1,147
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: Help \'86 Bronco ignition problem???

Sure sounds like that or one heck of a dead short or wicked grounding interuption.

Malcolm

Sixlitre is offline  
Sponsored Links
Advertisement
 
post #4 of (permalink) Old 02-05-2001, 08:10 PM
Mud in my Veins
 
Steve83's Avatar
 
Join Date: Dec 2000
Location: Memphis, TN
Posts: 5,301
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: Help \'86 Bronco ignition problem???

It's gotta be either the battery ground wire (check both ends and where it grounds the frame), the ignition ground, the computer ground (if it has one), the ignition switch, or the wiring between them (in that order of probability).

Steve
83 Custom w/95 4.9L EFI, 78 NP435, 83 NP208, 83 D44IFS 3.07, 87 Ford 8.8ABS 3.08, Michelin LTX AT 31x10.50R15
Steve83 is offline  
post #5 of (permalink) Old 02-07-2001, 12:15 PM
**DONOTDELETE**
Guest
 
Posts: n/a
Re: Help \'86 Bronco ignition problem???

Well, I replaced the brain box yesterday morning and drove the truck around for a few hours. The problem never occurred. Could it be fixed? It sure looks that way and I couldn't be happier. I have been putting this problem off since hunting season started and you can believe how excited I am to fix this problem. Thanks guys for all your help. Actually, with replacing the coil and brain box, this truck is running as good as ever since I have had it. It even passed the emissions test yesterday, which around the St. Louis area is tough to do with an old truck. Anyway, thanks again!

post #6 of (permalink) Old 02-07-2001, 05:14 PM
Mud in my Veins
 
muddybronco's Avatar
 
Join Date: Oct 1999
Location: woooooo pig sooooooie!
Posts: 6,842
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: Help \'86 Bronco ignition problem???

Umm, what's a brain? My truck must not have one, because if it did it would be smart enough to steer the other way when I turn towards small ponds.

It's a Jeep thing? My Bronco thing will run over your little Jeep thing.

Muddybronco
muddybronco is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Off-Road Forums & Discussion Groups forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome