New ECU fitted

Talk about the 406's electrical system, what wires do what, how to add extra functionality, etc.

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peugeot30v6
2.0 16v
Posts: 151
Joined: Wed Jul 23, 2014 4:59 pm
Location: Bristol, UK/Durban, South Africa

New ECU fitted

Post by peugeot30v6 »

Today I had to get a new ECU for my V6. 3 years ago before I bought the car it sat in a garage for 9 months not being used and the old owner kept on jump starting it which damaged the ECU. So had to shell out £950 for one which had to be imported from France. Just a warning, dont jumpstart! My V6 is just costing more and more these days[emoji29]
2002 Peugeot 406 V6 Auto Executive [95100miles]
2003 Peugeot 406 HDI 110 Executive Manual [157000miles]
2002 Volvo S60 2.0t Auto [287000miles]
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Rolebama
2.0 Turbo
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Joined: Wed Dec 04, 2013 2:15 pm
Location: Middlesex (NW London)

Re: New ECU fitted

Post by Rolebama »

The two most common causes of ECU burn-outs during jump-starting, that I know of, are; one, not allowing the battery voltages to synchronize before starting, and two, instantly revving the car after it has started causing spikes. if the batteries are connected, then left for five to ten minutes before starting, all should be OK. Start only with a 'dead' throttle, and to not rev until a good five minutes or so has passed.
I have successfully jump-started many ECU-equipped cars over the years, and only time there was ever a problem was when people didn't lsiten, and revved their car the instant it started.
FWIW, It is worth making sure before trying a jump, that the battery terminals are fitted correctly, and tight. Loose or bad connections can also cause spiking after starting.
1998 2.1 GLX TD
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