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2004 Honda Civic ECU

Tiny
SAT225
  • MEMBER
  • 2004 HONDA CIVIC
  • 130,000 MILES
Our battery not charging light went on. Replaced alternator (cdn tire), light still on. Got it checked: battery and alternator working properly. Drove: light went off but engine light went on, then gauge lights went off, car drove like in low gear, only 5 km/hr max. Next day, could not charge.
mechanics said we need new ecu but can't guarantee it. 1200 dollars. Should we go that route?
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Thursday, August 8th, 2013 AT 10:36 AM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
If the alternator is charging correctly, the ECU could be faulty. Ensure the alternator has sufficient ground connection before you proceed with replacing the ECU and ensure the wires are not broken in any of them.

You can get a used ECU for a much lower price than that and either way you need to reprogram the ECU before you can use it.
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Friday, August 9th, 2013 AT 12:23 AM

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