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I connected two negatives by mistake when i changed my battery cables and my car went carzy afterwerds and everything goes crazy when i turn the car on

2007-11-26 01:54:17 · 5 answers · asked by Victor S 1 in Cars & Transportation Car Makes Mazda

5 answers

Simply try disconnecting the battery for an hour or so to completely remove power and to let any capacitors (which hold power) to fully discharge.

When power is reapplied later the ECU should, in theory, be completely reset to whatever base code is in there. Now, if your little gaff caused code corruption you could be in trouble...

2007-11-27 01:42:00 · answer #1 · answered by cnshinn 6 · 0 0

It is probably not the ecu that is causing the problem. My guess would be a bad ground at the instrument cluster or a bad connection at the instruments.

To reset the ecu, disconnect the batter ground cable. Turn on the headlights (to drain any stored electricity) turn off lights and reinstall battery cable. Takes about 2 minutes.

2007-11-29 16:52:38 · answer #2 · answered by the mazda mechanic 4 · 0 0

you may have damaged the cars ecu. The best advice i can give is to repost this question on www.rx7club.com. Go to the 2nd gen section and ask. There are TONS of electrical guru's on there. I highly recommend you join the forum(its free). I have been a member there for 7 years or more and with 10's of thousands of members on there, they can help you get your FC up and running correctly again.

2007-11-28 15:38:05 · answer #3 · answered by Devon G 2 · 0 0

I would try disconnecting the battery for a while like dude said then reconnect it- if it still does it your gonna need a new Ecu

2007-11-27 14:41:28 · answer #4 · answered by The Olaus 2 · 0 0

you need to see a tuner car specialist to get that fixed because it is a computer chip problem and it is nothing you can fix on your own.

2007-11-26 09:58:18 · answer #5 · answered by Anonymous · 0 0

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