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Old 20 Oct 2008, 03:01 am
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Default 91 honda accord charging system problems. any ideas?

I am having problems with my charging system on my 91 honda accord lx. my alternator wont charge the battery. i have replaced the alternator and the battery is good. the battery terminals and cables are in good shape. i asked my highschool shop teacher and he said it could be the ECU, how would i check to see if the ECU is bad, and any other ideas would be appreciated, actually the ECU does, it controls the alternator output. and i believe the voltage regulator is on the alternator no?
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Old 20 Oct 2008, 03:16 am
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have you check voltage regulator?ECU don't do a thing with charging
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Old 20 Oct 2008, 03:31 am
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I can get you scans from the service manual on the circuit diagrams and the 'how the circuit works'. perhaps you can walk through them with your shop teacher and diagnose the problem. it is possible that the electronic load detection (ELD) is a part of the problem but unlikely as is it unlikely that the ECU is the problem.there are some questions that should be answered--is the charging light on?if not, how do you know the alternator is not charging? if you've measured the output with a voltmeter, what is the output? is the battery going dead? etc.send me an email and I'll scan them for you and send them on. to email me click on the icon above my name to the left of this response then select 'email' from the right side of the profile box. be sure to include a regular email address in the text of the message so I know where to send it. Yahoo Answers will not allow attachments to answers. doing it this way keeps your email address and mine out of the searchable Yahoo Answers database
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