Ground under ignition coil. - JeepForum.com

 
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post #1 of 12 Old 01-31-2013, 10:41 AM Thread Starter
JeepinJordan
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Ground under ignition coil.

Passenger side, on the block under the ignition coil, there are pigtails connected to what looks like a ground point. I messed with the connectors when the jeep was running and it would stall out. Is this an important ground point??

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post #2 of 12 Old 01-31-2013, 10:42 AM
HighLonesome
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Its the engine harness ground. Uber important.
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post #3 of 12 Old 01-31-2013, 12:07 PM Thread Starter
JeepinJordan
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It should not stall when I play with it right? What should I do? Stalls or cuts out when driving then jumps back on, already changed CPS with a mopar sensor. Idk how this would cause it to stall when driving. Its giving ignition and misfire codes.

-Bone stock 1996 Jeep Grand Cherokee Laredo 4.0L
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post #4 of 12 Old 01-31-2013, 01:13 PM
bananaslug
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Clean the connection and block, then put it back on
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post #5 of 12 Old 01-31-2013, 01:14 PM
HighLonesome
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Quote:
Originally Posted by JeepinJordan View Post
It should not stall when I play with it right? What should I do? Stalls or cuts out when driving then jumps back on, already changed CPS with a mopar sensor. Idk how this would cause it to stall when driving. Its giving ignition and misfire codes.
Yes it will cause a stall. Repair it properly and you're golden.
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post #6 of 12 Old 01-31-2013, 01:27 PM
DirtDodd
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Quote:
Originally Posted by bananaslug View Post
Clean the connection and block, then put it back on
^^^
x2

Nothin is no good with no good grounds! (What a negative statement...)
yes, my attempt at a polarity pun
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post #7 of 12 Old 01-31-2013, 01:40 PM
HighLonesome
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The connector probably needs repaired. That's what happened to mine. I soldered it up.
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post #8 of 12 Old 01-31-2013, 02:16 PM Thread Starter
JeepinJordan
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Originally Posted by HighLonesome View Post
The connector probably needs repaired. That's what happened to mine. I soldered it up.
I will clean it but I hope that it doesn't turn out to be like this. It cut out bad today after messing with it.
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post #9 of 12 Old 01-31-2013, 03:07 PM
HighLonesome
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Originally Posted by JeepinJordan View Post
I will clean it but I hope that it doesn't turn out to be like this. It cut out bad today after messing with it.
Mine broke off completely. Caused by an engine swap and not putting the harness back exactly like it was. That ground cable was stretched and it eventually snapped. Make sure there's no tension on it. In other words, the cable should be relaxed. Its really an easy fix once you diagnose it.
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post #10 of 12 Old 02-01-2013, 04:46 AM
KoreaZJ
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Very important grounds...

Small BK and BK/OR wires are for Data Link Connector. Large BK wire is Generator GROUND. Two BK/TN wires are GROUND for the PCM. Better not to "test" them with power on, you might damage the PCM. Disconnect the battery, remove the lugs, clean everything well, reassemble tightly.
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post #11 of 12 Old 02-01-2013, 03:06 PM Thread Starter
JeepinJordan
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Cleaned these. Did not do a thing, still dies out and has code 43! Ugh. Accell coil, cap & rotor, spark plug and wires all new.

-Bone stock 1996 Jeep Grand Cherokee Laredo 4.0L
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post #12 of 12 Old 02-01-2013, 06:36 PM
ZeeJay1997
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Korea gave you good advice, did you take it apart and clean everything?

Does it still stall when you mess around with the ground wire?
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