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Unread 10-08-2013, 04:24 PM   #1
kosburn
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1979 CJ7 
 
Join Date: Jan 2013
Location: Hazlehurst, GA
Posts: 10
Help identifying a part

I have a CJ7 that my son and I are working on. Prior to today it has been running but today refuses to start ... turning the ignition yields nothing but a click. Initially, I thought the battery was bad, then the solenoid but trying them out on my other jeep they are working properly. Not knowing much about engines/electrical I'm hoping someone can shed some light on what I need to check next....

Looking at the picture, I noticed the object that I have circled and after putting my hand on it I noticed it was warm/hot. What is this called and would it possible be causing the jeep to not start?

Thanks in advance for your help!jeep1.jpg

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Unread 10-08-2013, 05:33 PM   #2
MoneypitCJ5
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1977 CJ5 
 
Join Date: Mar 2013
Location: Florence, AL
Posts: 170
That box looks like the ignition module. It sounds like your issue is that the starter doesn't spin. If that's the case, the module won't be the cause.

Double check all the connections both to the battery and starter. If they are all good, and the battery and solenoid are good, remove the starter and bench test it.

Connect a jumper cable to the negative battery post and clamp the other end to one of the ears on the starter. Then connect a jumper cable to the positive battery post and touch the other end to the threaded copper stud on the starter. If it doesn't spin that way, the starter is toast.
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Unread 10-08-2013, 05:43 PM   #3
brownbagg
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when you turn the key, the key is mechanical, it pushes a rod down the column unto an electrical switch that engage the starter, a lot of time the rod and the electrical switch will get out of adjustment
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Unread 10-08-2013, 05:45 PM   #4
kosburn
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1979 CJ7 
 
Join Date: Jan 2013
Location: Hazlehurst, GA
Posts: 10
Solved: Moneypit you were spot on! I had just about decided the starter was the culprit so I removed it and took it to O'Reilly's and had it tested. It was bad. So, thank you -- you know your jeep parts!

I was curious about the ignition module because it looks like something had "leaked" out of it ... I thought it was capacitance gel. Just to be safe I've ordered another one.

Again, I appreciate your help!


Quote:
Originally Posted by MoneypitCJ5 View Post
That box looks like the ignition module. It sounds like your issue is that the starter doesn't spin. If that's the case, the module won't be the cause.

Double check all the connections both to the battery and starter. If they are all good, and the battery and solenoid are good, remove the starter and bench test it.

Connect a jumper cable to the negative battery post and clamp the other end to one of the ears on the starter. Then connect a jumper cable to the positive battery post and touch the other end to the threaded copper stud on the starter. If it doesn't spin that way, the starter is toast.
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Unread 10-08-2013, 05:49 PM   #5
james04si
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1977 CJ5 
 
Join Date: Apr 2009
Location: Arlington TX
Posts: 848
Yup most defenatly the ignition module. Its a prestolite ignition which is terrible on its own but would not cause issues turning over. Your issue lies in the battery, battery cables, solenoid, wire from solenoid to starter or ground, or the starter itself.
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Unread 10-08-2013, 05:55 PM   #6
MoneypitCJ5
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Location: Florence, AL
Posts: 170
No problem! I'm glad you got it taken care of!

Those modules are "potted" usually in polyurethane and it can get pretty warm. If it was leaking though, it's just a matter of time before it goes out. Good call.
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1973 VW Karmann-Ghia first car
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1977 CJ5 304, 3MT - under construction
And many in between!
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