I hooked jumpercables backwards. I changed alternater and battery and it is still not charging. What can it be?

closed as too broad by Nick C Nov 5 '18 at 11:11

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  • What's the model and engine size? – Ben Jul 12 '17 at 22:57
  • this should be closed as the OP never came back since July to answer a most simple question. – agentp Oct 10 '17 at 21:44
  • hey "community" how many times you gonna bump this? – agentp Mar 10 '18 at 23:34
  • @agentp bumped yet again, waste of time... just flagged it... – Solar Mike Nov 5 '18 at 9:51

Check all your fuses. Also check fuseable links if applicable.


I am not an expert but if the ECU controls the charging system and alternator, the ECU controls the amp rate controlling the alternator. There should be a Big fuse in the fuse box that might be burnt the ELD module.

I hope this helps.


  • While you're on the right track with a ECU controlled alternator, Jeep's don't use an ELD. The PCM has a voltage sense wire (ASD relay output) and will modulate the alternator field circuit. – Ben Nov 10 '17 at 0:20

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