Ignition problem

Tiny
TCRAIG
  • MEMBER
  • 1976 JEEP CJ5
  • 4.2L
  • 6 CYL
  • 4WD
  • MANUAL
  • 100,000 MILES
I was able to read through most of you the forum on the CJ 1976-1977 ignition problems. My ignition module is going out and the after market module does not work in conjunction with the Prestolite distributor currently in the vehicle. My confusion is in what all do I need to change out to upgrade to a better ignition solution?
Thanks,
Tom
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Monday, September 18th, 2017 AT 9:17 AM

39 Replies

Tiny
CJ MEDEVAC
  • EXPERT
Hey there!

Prestolite is not well suited for a CJ.

I sort of experienced every problem it dished out to me. Module/wires entering the distributor/spring breakage on the mechanical advance weights inside the distributor/ and the "balloon" cracking for the vacuum advance inside the front of the distributor.

When they started duplicating the same problems, I switched to Motorcraft on my 1977.

Best thing I did for this Jeep!

This is your list for what you need.

Basically, your system will be a "1979" when we are done.

So when you ask for this stuff, tell them it is a 1979.

A new or re-manufactured 258 distributor. Advance Auto/Carquest has this one with the cap and rotor included. Lifetime Warranty too! Link below.

https://shop.advanceautoparts.com/p/carquest-ignition-distributor-with-cap-and-rotor-new-t4691/10435884-P?navigationPath=L1*14923%7CL2*15034%7CL3*16062

Need an Ignition Module too! This one's a little more expensive. Lifetime warranty!

https://shop.advanceautoparts.com/p/wells-vehicle-electronics-control-module-f102/10302218-P?navigationPath=L1*14923%7CL2*15032%7CL3*16043

Need a coil!

https://shop.advanceautoparts.com/p/bwd-ignition-coil-e71p/5240271-P?navigationPath=L1*14923%7CL2*15034%7CL3*16064

A connector for the coil.

https://shop.advanceautoparts.com/p/bwd-ignition-coil-connector-pt5764/20974639-P?navigationPath=L1*14923%7CL2*15034%7CL3*16064

Wire set. Does no have to be anything special.

https://shop.advanceautoparts.com/p/carquest-premium-spark-plug-wire-set-35-6309/19250131-P?navigationPath=L1*14923%7CL2*15034%7CL3*16072

Going to need a ballast resistor. The Prestolite set-up did not use a resistance wire, the ballast resistor will be its substitute for the 1979 set-up.

https://shop.advanceautoparts.com/web/PartSearchCmd?storeId=10151&catalogId=10051&langId=-1&pageId=partTypeList&actionSrc=Form&searchTerm=ballast+resistor&vehicleIdSearch=1627

Need some wiring to connect the distributor to the module.

To get a deal, We will have to shop around on eBay/salvage yards to find the correct connectors for the ignition module feed and the four wire connectors from the ignition module to the distributor.

I will help you with this treasure hunt if you are indeed serious with this upgrade.

I will hang with you as long as you keep responding. I have wire diagrams and can talk you through this whole process. I can also show you how to save money on these parts too.

Your turn,

The Medic

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Monday, September 18th, 2017 AT 4:43 PM
Tiny
TCRAIG
  • MEMBER
You are awesome thank you. I am so fired up to get this done. I will look over all the information you sent me. Any and all help would be greatly appreciated.
Tom
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Monday, September 18th, 2017 AT 5:29 PM
Tiny
TCRAIG
  • MEMBER
I assume the connectors for the module cannot be purchased at carquest? I Definitely could use your expertise on hunting around for those. I am heading to a CJ junk yard tomorrow and will poke around in their yard.
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Monday, September 18th, 2017 AT 5:38 PM
Tiny
CJ MEDEVAC
  • EXPERT
Good deal!

So you have read a lot of my CJ stuff?

As far as helping out with deals on the parts,

1) Codes change/have to do your homework and make "dry runs" in the check out to see if the codes you find still work.

2) Bundle parts as to barely get over the "limit" for a code. This will make it that you do not waste money on an overage.

3) Start a new order to maximize the codes power. You can use the same codes most of the time on new orders.

4) You can pick up at the store in thirty minutes, make sure what store(s) you have to pick them up at. Some things are only available through the mail. You have to order on line regardless, cannot use the codes in the store.

5) This will all make sense when you read the next link.

http://www.2carpros.com/questions/2001-dodge-neon-milage-just-want-put-fliuds-their-locations

At minimum, you will need the two connections to the ignition module, one will have two wires, the other will have four.

The connection for the distributor will have three wires (it sort of goes to the four wire connector at the module).

Sending you a diagram of how it works.

I will aid you later on where to tie onto the Prestolite wires, it is probably vague in my diagram below.

This might also aid you at the salvage yard, worked so many times for me, still does.Tailor the technique to your needs.

https://www.2carpros.com/questions/1993-saturn-sl1-shoulder-belt-mechanism-stuck

Let's see a Jeep Picture!

Your turn,

The Medic
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Monday, September 18th, 2017 AT 7:10 PM
Tiny
CJ MEDEVAC
  • EXPERT
Oh yeah,

The later CJ's with computers, will not have the correct module/ distributor connectors.

The Medic
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Monday, September 18th, 2017 AT 7:15 PM
Tiny
TCRAIG
  • MEMBER
I just scored on a module and will be ordering everything else. I will get a picture out to you ASAP.
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Tuesday, September 19th, 2017 AT 11:12 AM
Tiny
TCRAIG
  • MEMBER
Did you receive my reply about parts ordered?
Tom
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Tuesday, September 19th, 2017 AT 1:59 PM
Tiny
TCRAIG
  • MEMBER
I ordered the parts you recommended, so hopefully with your help I can find the proper connector and get this installed when everything arrives.
Thanks again.
Tom
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Tuesday, September 19th, 2017 AT 2:09 PM
Tiny
CJ MEDEVAC
  • EXPERT
Nice CJ-5!

Looks like rust ain't jumped on it.

We kinda ain't sitting in cubicles answering stuff, Some of us work/ some retired/ some in different parts of the world!

I generally get done slaving for the other guy around 5:30 PM to 6:30 PM Eastern Time. I jump on here to relax till maybe 11PM. I sorta neglect things I need/ want to do. I really wanna repaint my Willys Jeep. Got the paint! Need to do some Jeep prep. Need to crack down!

So, in a short sentence, I don't see replies till late afternoon/ evening.

I do respond! Just gotta wait on me!

I'll start looking for New connectors, You may have to add wire to 'em to make 'em reach.

If you are still looking in salvage yards, Ford stuff from the 70's may be perfect.

Just compare the # of wires on the connector ends to the diagram I sent you.

Mine came off of a pickup, I had to shorten the wires from the module to the distributor, as they went around the world to connect on the truck setup.

Just a pointer

Don't try to pry them apart, you'll break off the locking tabs. The textbook correct way (dumb as it sounds), is to

Grasp the wires on both sides of the connector, snatch/ jerk, it will come apart.

Keep me posted as to what's going on/ when more info is needed.

CJs are my favorite to answer on here (hence, my user name), if you have seen other posts I've answered, I really try to give 'em my all.

Your Turn,

The Medic

pic 1) Present '77 w/ 258
pic 1) Jeep #1 '77 in 1983 w/ 304
4 others in between
And of course, we have my '46 "Willy" too!
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Tuesday, September 19th, 2017 AT 5:48 PM
Tiny
TCRAIG
  • MEMBER
Incredible Jeeps,

No worries on the replies sorry for any confusion, The only reason I had asked that is that I hit send on a previous reply and it appeared to have sent but it didn't.

You mentioned a diagram and I'm not seeing one that you sent over? I'll check again
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Wednesday, September 20th, 2017 AT 11:16 AM
Tiny
CJ MEDEVAC
  • EXPERT
Just letting you know that I hadn't forgot you! If you are on during my 2cartime, we can sorta back and forth communicate in real time with questions and answers!

I've been to Fort Lewis several times, 2nd Ranger Battalion is there, I was in 1st Ranger Battalion at Hunter Army Airfield, Savannah, GA. They even let us invade Seattle twice, during off time!

So, Late for me, is kinda early for you!

Diagram Again.

See below/ click on it!

Let me know if you see it! Sometimes there are 2carglitches!

The Medic
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Wednesday, September 20th, 2017 AT 4:13 PM
Tiny
TCRAIG
  • MEMBER
Right on, I received the diagram. I can't thank you enough for your service and for all that you do and have done for this country.

I work as a firefighter and many of my coveorkers are ex military
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Wednesday, September 20th, 2017 AT 5:25 PM
Tiny
TCRAIG
  • MEMBER
How are you, hopefully my parts will be arriving this week. I have another question for you, I have the original swing out arm - spare tire holder on the back of my jeep do. You have any diagrams or pictures on the mechanism that secures and locks its closed. Looks like the previous owner did a make shift job on it. I ll send you a pic of what I have.
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Monday, September 25th, 2017 AT 3:40 PM
Tiny
CJ MEDEVAC
  • EXPERT
Well thank you!

Send pics anytime.

Waiting to get yours all squared away!

The Medic

Some shots of my Man Cave/ guest room
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Monday, September 25th, 2017 AT 6:32 PM
Tiny
TCRAIG
  • MEMBER
Hello sir how are you? The good news is that the sun is still shining here in the Seattle area. No rain yet. I have received all the parts you recommended to get my ignition switched over. Now I need to get the proper wire and connectors taken care of. I ll do a dry run on all the components then see if that local cj junk yard has any of those connectors. Any thoughts out your way on possible connectors?
Tom
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Thursday, October 5th, 2017 AT 9:04 AM
Tiny
CJ MEDEVAC
  • EXPERT
I just emailed "Go Painless Wiring" to see if only the pigtails might be obtainable without getting an entire harness.

I'll keep you posted!

Are you still driving your Jeep or is it down until you get upgraded?

The Medic
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Thursday, October 5th, 2017 AT 3:45 PM
Tiny
TCRAIG
  • MEMBER
It's running pretty good and yes i'm driving it as long as the sun stays out. Awesome on the email. Keep me posted when you hear back
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Thursday, October 5th, 2017 AT 3:51 PM
Tiny
KEN
  • ADMIN
Great man cave! You should post some pics int he experts forum :)

Cheers, Ken
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Friday, October 6th, 2017 AT 4:18 PM
Tiny
CJ MEDEVAC
  • EXPERT
No word back from my Email yet.

I have continued to look here and there.

In pic below, I can find "B" and "C",

Just not "A"

I was sorta hoping to find 'em all at one site and REASONABLE!

Any luck with the late '70s- early '80s Fords in the salvage yard?

The Medic
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Sunday, October 8th, 2017 AT 3:39 PM
Tiny
TCRAIG
  • MEMBER
2 of three is not bad, I have not made it back out to the junk yard but will go this week. Thank you again
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Sunday, October 8th, 2017 AT 3:57 PM

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