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Key malfunction no key power - 2004 BMW 3 Series

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key malfunction no key power - e6c51da.jpg
This should help, works on most BMW 3 series

Posted on Oct 05, 2010


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It could be a lot of thing's ,define lost power ! Engine died an the light's lit on the instrument cluster ? Does the engine spin when you turn the key to start ? Did the malfunction light come on when the engine was running ? Do the headlamps work , shine bright ? Battery good , connections good ? What year is the vehicle ? Engine Ztec ?

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1997 pontiac firebird will not crank and has no power at instrument panel wwill crank if breached at starter

No warning lights or gauges with key on? Possibly the ignition switch has a malfunction, or the switch has lost its power supply. One would need to check for power in and power out on the switch.

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You need to have the injector circuit for cylinder 2 checked. Possibly the ground for the injector-which goes into the engine computer-may have a bad wire. The power wire for the injector should have power on it anytime the key is on. When the computer internally grounds the individual injectors, the injector will pulse, or spray fuel out into the cylinder. When the injector circuit malfunctions, no pulse, and you get the misfire.

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that is a 12vdc power problem.
the sensors are failing , many do to lost power. (12vdc electrical distribution power)
so use a voltemeter, i bet even at he cig lighter port the voltage drops
below 13.3v running, way below. infact.
are your battery terminals clean,
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no? then the battery is being discharged,

Feb 26, 2013 | Suzuki Cars & Trucks

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Does your vehicle have a theft deterent system? If so, that could be malfunctioning. It takes 10 minutes to reset this system with the key on.

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Sparkplugs not burning fuel

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No fuel pressure, malfunctioning fuel pump
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Pass key malfunction

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Oct 12, 2008 | 1993 Oldsmobile Eighty Eight

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