ignition switch questions - Off-Road Forums & Discussion Groups
Jeep-Short Wheelbase All discussion of short wheelbase Jeeps: CJ, TJ, YJ and JK

LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 12-24-2002, 04:11 PM Thread Starter
FNjeep's Avatar
Join Date: Mar 2002
Location: Northeast,Pa.
Posts: 132
Thanks: 0
Thanked 0 Times in 0 Posts
ignition switch questions

I have a 78 cj-5 w/304 & a painless wiring kit, that currently just cranks, but will not start. It has 5.8 volts to the coil in the run position (I know this is low, but not sure why, but it has run like this since summer.) In the start position it drops to about 1.something. I had the module and coil checked out at autozone and both were good. I was wondering if this could be the ignition switch and if there was a way to test/bypass it to know for sure. as a little more background, the jeep was occasionaly cutting out on me but would refire, then died for good. thought it might've been the accel. pump on the m/c 2100. replaced with my old holley, but still would'nt go. replaced mod & coil with spares I had and was running ok until I went shopping last weekend and it wouldn't start. that's our current predicament, hope someone could give me some feed back. thanx, and Happy Holidays. Alex
FNjeep is offline  
Sponsored Links
post #2 of (permalink) Old 12-24-2002, 04:55 PM
Way Outta Control
Join Date: Sep 1999
Location: usa
Posts: 10,815
Thanks: 0
Thanked 1 Time in 1 Post
Re: ignition switch questions

That is too low.

Get to the back side of the ignition switch.
Key On, Engine Off - look for a full 12 volts getting to the
switch - the (+)terminal or BATT terminal.
If not 12 then look for where that wire comes from, bad connection supplying it.
If OK, measure the "IGN" terminal - should be same. If not,
replace switch.
Make sure the lugs crimped on the wires aren't the voltage
You have a resistive connection somewhere.
RRich is offline  
post #3 of (permalink) Old 12-26-2002, 02:25 PM Thread Starter
FNjeep's Avatar
Join Date: Mar 2002
Location: Northeast,Pa.
Posts: 132
Thanks: 0
Thanked 0 Times in 0 Posts
Re: ignition switch questions

OK, finally tredged through the snow to take a look at this. Wasn't exactly sure which wire was which.with key in run (don't have to worry about the engine being off part) measured 11.8 on red wire, and the same on the red w/white tracer. with key out of the ignition measured 12.5 at red wire. does that sound normal? I replaced the switch the same time I was putting the painless kit in so I thought it should be good, but I'm running out of ideas. Any other theories?
FNjeep is offline  
Sponsored Links

Quick Reply

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


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

Email Address:


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