Motorcraft meltdown-ignition modual!!! - JeepForum.com

 
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post #1 of 5 Old 10-03-2003, 10:48 PM Thread Starter
only in a jeep cj
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Motorcraft meltdown-ignition module!!!

Does anyone know what causes the Motorcraft ignition modules (under the water bottle on drivers side) to go bad and melt?????
My buddies CJ wouldn't run right...I found a huge amount of slack in the chain and replaced it.....at same time I found his module was melted (187K miles)
For the last week, my CJ with 165K miles, started acting funny during acceleration...mainly at around 1500rpms.....like it wasn't getting air, fuel, or the timing was off....once up to speed it runs good, but not perfect .I already bought the seals and chain and have the Jeep all apart now. Lots o' slack on the old chain (is 165K miles on the original chain good?!) And what to I find....my box is melted now...WTF. Is this common? Does high mileage/age wear it out or is it from the timming floating across a large degree span and screws up the box? You can tell a melted box from the wax on the back side is now clear and some has run out down the fender....it still works, just not 100%.
ANY THOUGTS ????
thanks


Ed
1975 CJ-6 1983 CJ-8
1986 CJ-7 Laredo 1986 TJ-7 Trail Jeep
2003 Inca Gold TJ Rubicon

Last edited by only in a jeep cj; 10-03-2003 at 10:54 PM.
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post #2 of 5 Old 10-06-2003, 06:51 PM
CSP
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I think you're running into a case of coincidence here. You do have to remeber though that the newest CJ is 17 years old. Those ignition boxes aren't meant to last forever.
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post #3 of 5 Old 10-06-2003, 07:21 PM
andyp65
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just a little off topic woulnt an MSD ignition system just completely imporve the performance and bypass the motorcraft ignition?

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post #4 of 5 Old 10-06-2003, 11:44 PM
Sandman74
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I went to an MSD system top to bottom, swapped in a Holley 4barrel carb, and my 304 hasnt so much as hiccupped in over a year.

Youth and talent is no replacement for age and treachery.
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post #5 of 5 Old 10-07-2003, 08:44 AM
andyp65
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good to hear thats what im prolly going to do with my 258 when i get out of boot camp. a friend of mine put an msd in his 4banger and well it mad so much improvements

1981 Blue Cj-7
33 Inch Goodyear MT/r
258 Inline w/ t5
BIG GUNS AND JEEP OWNERS OF AMERICA MEMBER # 20

And yeah its a real jeep with round headlights and leaf springs :)

Semper Fidelis!
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