Page Index Toggle Pages: 1 Print
Normal Topic Hot ignition coil. (Read 2066 times)
 
Ryan_289
3A Lover
2015 Sponsor Member
**
Offline


Still Plays With Jeeps

Posts: 66
Location: Russellville, AR
Joined: 04/08/13
Gender: Male
Hot ignition coil.
06/17/16 at 13:29:10
Print Post  
I had an issue a several days ago.  My jeep started running rough and I started checking wires and the ignition coil was hot to the touch.  I purchased a new one and it was still running rough so we changed the condenser and that seems to have fixed my running issue.  2 nights ago we drove the jeep around for around 30 minutes or so and when I got back I felt of the new coil and its still getting hot.  Its mounted to the block, do you think it could be getting heat from their?  Everything seems to be running right, I just didnt think ignition coils were supposed to get hot like that.  Does anyone elses coil get hot?
  
Back to top
 
IP Logged
 
athawk11
YaBB Administrator
Owner Member 2012
2016 Sponsor Member
2015 Sponsor Member
*****
Offline


1949 CJ3A

Posts: 2771
Location: Arvada, Colorado
Joined: 01/26/11
Gender: Male
Re: Hot ignition coil.
Reply #1 - 06/17/16 at 17:25:53
Print Post  
Hi Ryan,
At some point, I read that mounting the coil higher in the bracket helps to keep them cool, so engine heat probably does contribute to them getting warm. 

Can't say I've ever touched it after a drive.  I do have a block mounted coil.  In preparation for the BHR 2016, I'll be doing a few 'shake down' runs this weekend.  I'll make a point to put my hand on it and report back.

Tim
  

2-1949 CJ3A 
1-1946 CJ2A
Back to top
 
IP Logged
 
Ryan_289
3A Lover
2015 Sponsor Member
**
Offline


Still Plays With Jeeps

Posts: 66
Location: Russellville, AR
Joined: 04/08/13
Gender: Male
Re: Hot ignition coil.
Reply #2 - 06/17/16 at 18:21:55
Print Post  
I went to the parts store today at lunch and picked up a spare set of points and condenser and was talking to the old man about it.  He said that since my coil was an internal resisted coil that it would be on the hot side.  Said as long as I could keep my hands on it to not worry about it.

I would still be curious as to what others are seeing.  Next time I drive it I will shoot it with my thermometer and check temps.
« Last Edit: 06/17/16 at 18:22:46 by Ryan_289 »  
Back to top
 
IP Logged
 
JimVillers
3A Lover
**
Offline


Making progress on a disposable
CJ3A?

Posts: 79
Location: Virginia Beach, VA
Joined: 10/03/15
Gender: Male
Re: Hot ignition coil.
Reply #3 - 06/18/16 at 19:06:42
Print Post  
Ryan .... How "hot" is hot.  Warm to the touch is normal.  Check the resistance with a digital Ohm meter.  It should have an internal ballast resistor and measure 4-5 ohm.  If it measures 1 ohm or less, you have an incorrect coil and it will run VERY hot until it fails.
  

Jim Villers
Virginia Beach, VA
A very Rusted 1950 CJ-3A .... Making progress.
Back to top
 
IP Logged
 
Page Index Toggle Pages: 1
Print
Bookmarks: Facebook Google Google+ Linked in Twitter Yahoo