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Unread 06-19-2013, 04:02 PM   #1
BIGEARS270
Registered User
1984 CJ7 
 
Join Date: Oct 2011
Location: Ft. Collins, Colorado
Posts: 5
86 Cherokee OVERCHARGING

I am having a overcharging problem with a 86 Cherokee with a 2.5L. It ran good after sitting a couple months. Now that it is overcharging the engine(16v-17v) and will spit spuder then die. I have replaced the battery and the alternator with no change. If i pull the field wire off it runs perfect. I have read some suggestions to check the resistance on the fielding wire or replacing the ECM, but that was for late 90's xjs with 4.0L. Will it be the same for my vehicle or is there something i am overlooking?

Any help would be greatly appreciated!
Thank.

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Unread 06-19-2013, 11:22 PM   #2
NOTNSUV
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Join Date: Jan 2012
Location: Spring Creek, Nevada
Posts: 44
Had overcharge also. Replaced major wires from battery and hot and ground wires to starter,etc. no more issues.
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Unread 06-21-2013, 02:07 PM   #3
BIGEARS270
Registered User
1984 CJ7 
 
Join Date: Oct 2011
Location: Ft. Collins, Colorado
Posts: 5
Hey Thanks! I am trying to gather as much in info and parts possible. The jeep belongs to my grandfather who lives an hour away from any parts stores in the mountains. Hopefully with what i gather it'll do the trick!
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Unread 06-28-2013, 02:58 PM   #4
BIGEARS270
Registered User
1984 CJ7 
 
Join Date: Oct 2011
Location: Ft. Collins, Colorado
Posts: 5
We went through everything again and it ended up being the ecm. Runs great again!
Thanks!
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