fiat_mad
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Technical CINQ STARTING PROBLEM PUZZLE! Please help!
- Thread starter madnesstiger
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Technical CINQ STARTING PROBLEM PUZZLE! Please help!
Back on topic, for info, if you start the engine and then disconnect the battery (or jump start the car with a completely duff battery) the injector lamp will stay illuminated. I presume this is some sort of indication that the ECU is in a learn or limp home mode.
This is an ancient thread, but never never ever remove a battery lead from a running engine. You will spike the electronics.
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Cheers
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I would agree with this in the case of French cars which have notoriously C**P electronics but most cars' systems should have more than sufficient protection against spikes in the form of capacitors and inductors as an engine bay is a pretty hostile environment with all that sparky HT around.
Having had to drive my cinq for more than 20 miles with effectively no battery as it had suddenly died and gone totally open circuit I know from experience tha the Cinq's electronics are pretty robust!
Vic
EI4GGB
Member
agreed with rallycinq about disconnecting batteries when running, when you disconnect a battery which was just after starting a car, its pulling a bit of current from the alternator. if the load (i.e. battery) is suddenly removed, the alternator voltage output will suddenly spike, sometimes to over 100 volts, as the regulator takes a finite amount of time to adjust and drop the alternator output. The spike might might last less than a millisecond, but its enough to damage electronics. its called a load dump, and most stuff is only protected to around 60 volts..
