Strange question about idle problem - Page 5 - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep CJ Forum > Strange question about idle problem

Stainless Steel Door Hinge PinsPoly Door Hinge BushingsSave at JeepHut on Smittybilt Soft tops

Reply
Unread 06-19-2013, 12:58 PM   #61
ryancrotty
Registered User
1984 CJ7 
 
Join Date: Feb 2012
Location: fort walton beach, FLORIDA
Posts: 97
New coil or ICM? The coil is brand new

ryancrotty is offline   Reply With Quote
Unread 06-19-2013, 01:08 PM   #62
LumpyGrits
Registered User
1985 CJ7 
 
Join Date: Jul 2010
Location: The Mojave Desert Palmdale Ca. U.S.A.
Posts: 4,683
Quote:
Originally Posted by ryancrotty View Post
New coil or ICM? The coil is brand new
YOU did say the coil got "super hot" did you not?
"Super hot" = to hot to keep your hand on, correct?
"Super hot", is a sign of a dying coil....
Who made the coil? Lots of china crap coming in that is pure 110% CRAP.
That's why I only go to NAPA for those kind of parts.......
LG
LumpyGrits is offline   Reply With Quote
Unread 06-19-2013, 01:28 PM   #63
ryancrotty
Registered User
1984 CJ7 
 
Join Date: Feb 2012
Location: fort walton beach, FLORIDA
Posts: 97
The coil was hot, it is accel super coil. Could this be the issue? Can a bad ICM make the coil go bad?
ryancrotty is offline   Reply With Quote
Unread 06-19-2013, 01:37 PM   #64
LumpyGrits
Registered User
1985 CJ7 
 
Join Date: Jul 2010
Location: The Mojave Desert Palmdale Ca. U.S.A.
Posts: 4,683
Quote:
Originally Posted by ryancrotty View Post
The coil was hot, it is accel super coil. Could this be the issue? Can a bad ICM make the coil go bad?
Accel coils have a history of issues.
Get an OEM coil.
That Accel coil could have 'hurt' the ICM.......
LG
LumpyGrits is offline   Reply With Quote
Unread 06-19-2013, 02:07 PM   #65
86cj74.2L
Web Wheeler
 
86cj74.2L's Avatar
2004 WJ 
 
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 6,477
I've never had any luck with that big honking yellow coil. Others say it works good for them but never for me. Causing misfires and what not on my roadrunner.

Get a OEM coil and a new ICM and completely eliminate anything ignition related.

Let me guess though. The factory ford style coil connector is gone too.

Ignition problems mask and are similar to carb issues and its best to eliminate the ignition side first.

There should be no fuel dripping out of those upward turning brass tubes in the center of the Venturi's. that needs resolved.

Its easily you have two seperate issues.

Do you have a test light? If so you also need to ensure your not putting full voltage on the ignition coil while the engine is running no matter who made it.

Its easily done by putting the clip to a ground and probing the battery and noting how bright the bulb is, then probe the plus terminal of the ignition coil and ensuring its not bright like it was on the battery.

A volt meter is just as easy. You want to see 6 to 9vdc when the black probe is on negative battery terminal and the red probe is on the plus of the ignition coil.
86cj74.2L is offline   Reply With Quote
Unread 06-19-2013, 02:17 PM   #66
LumpyGrits
Registered User
1985 CJ7 
 
Join Date: Jul 2010
Location: The Mojave Desert Palmdale Ca. U.S.A.
Posts: 4,683
The clipon Ford style cap was a source of many issues also.

X2 to OEM type coil with screw terminals.....Easy to find.
LG
LumpyGrits is offline   Reply With Quote
Unread 06-19-2013, 02:27 PM   #67
86cj74.2L
Web Wheeler
 
86cj74.2L's Avatar
2004 WJ 
 
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 6,477
Quote:
Originally Posted by LumpyGrits
The clipon Ford style cap was a source of many issues also.

X2 to OEM type coil with screw terminals.....Easy to find.
LG
My point was that with that gone its a crap-shoot as to if he has the correct wires on the plus.

I've never had a problem with the ford coil connector.
86cj74.2L is offline   Reply With Quote
Unread 06-19-2013, 02:34 PM   #68
LumpyGrits
Registered User
1985 CJ7 
 
Join Date: Jul 2010
Location: The Mojave Desert Palmdale Ca. U.S.A.
Posts: 4,683
Quote:
Originally Posted by 86cj74.2L View Post
My point was that with that gone its a crap-shoot as to if he has the correct wires on the plus.

I've never had a problem with the ford coil connector.
Good point....
We need to see some pics of the dizzy wiring to the coil.
LG
LumpyGrits is offline   Reply With Quote
Unread 06-19-2013, 07:38 PM   #69
ryancrotty
Registered User
1984 CJ7 
 
Join Date: Feb 2012
Location: fort walton beach, FLORIDA
Posts: 97
here you go.
[IMG][/IMG]

i checked the voltage and it was getting about 3.75 to 4. Also i noticed the choke was getting super hot, almost as soon as the car was turned on and the choke would open right up. So i checked the power to that and it was 12 constant.

You guys are a life saver.
ryancrotty is offline   Reply With Quote
Unread 06-20-2013, 03:20 AM   #70
John Strenk
Moderator
 
John Strenk's Avatar
1976 CJ5 
 
Join Date: Feb 2005
Location: Shalersville Ohio
Posts: 13,007
To get more output on a coil they would design it to pass more current. Unfortunately in a ballast setup like ours, that means the voltage is lower on the primary side. So lower input voltage lower output voltage. Maybe not enough to fire a plug consistently causing you to raise the idle speed, causing the main circuit to dribble gas. It's a vicious circle.

Trying to pass more current through the coil will only burn up the cheap ICM that are available these days.

The choke getting hot is OK.
John Strenk is offline   Reply With Quote
Unread 06-20-2013, 10:39 AM   #71
ryancrotty
Registered User
1984 CJ7 
 
Join Date: Feb 2012
Location: fort walton beach, FLORIDA
Posts: 97
Ok sounds like I need to replace the ICM to rule out all electrical and then go from there. Is that correct?
ryancrotty is offline   Reply With Quote
Unread 06-20-2013, 11:50 AM   #72
LumpyGrits
Registered User
1985 CJ7 
 
Join Date: Jul 2010
Location: The Mojave Desert Palmdale Ca. U.S.A.
Posts: 4,683
Replace the ICM and the COIL.........
Go to NAPA and get American made! Stay away from Pep-Boys, Autozone and the like. Trust me on this
LG
LumpyGrits is offline   Reply With Quote
Unread 06-20-2013, 12:05 PM   #73
86cj74.2L
Web Wheeler
 
86cj74.2L's Avatar
2004 WJ 
 
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 6,477
This is what I think.

You have two problems or possibly two problems.

One is most definatly the fuel dripping out the Venturi cluster. The other is a possible bad ICM.

Its not a bad idea to buy a new ICM and (a BDW or napa brand) slap it in the jeep. Pull your Venturi cluster and clean it good and start over.

With dirt in the tubes its most likely also in the fuel bowl to be sucked into them again with making the holes in the tubes bigger. My YouTube channel "EugeneKingify" has a video of how to drill them out.
86cj74.2L is offline   Reply With Quote
Unread 06-20-2013, 12:42 PM   #74
86cj74.2L
Web Wheeler
 
86cj74.2L's Avatar
2004 WJ 
 
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 6,477
It also looks like the correct wire for the plus terminal of the coil.

However saying that if it were me I'd still verify that you have a dim bulb probing it to ground with the engine running. Or using a volt meter look for 6 to 9 volts.
86cj74.2L is offline   Reply With Quote
Unread 06-20-2013, 05:28 PM   #75
ryancrotty
Registered User
1984 CJ7 
 
Join Date: Feb 2012
Location: fort walton beach, FLORIDA
Posts: 97
Ok so I'm picking up a new ICM and coil on the way home, Also I checked the voltage on the coil with the engine and it was about 4 volts.
ryancrotty is offline   Reply With Quote
Reply
Thread Tools






Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.