Question about 2005 Subaru Legacy 2.5
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Posted on Jan 02, 2017
SOURCE: 1990 Subaru Legacy shorted out
Subaru engines (including Legacy and engines of many other automobiles, GM, etc.) have returned to so-called wasted spark ignition systems since advent of the electronic distributor-less ignition (having been used historically in early engines with magneto ignitions). With this approach, the ignition systems are less expensive and usually quite reliable. At the same time, however, a shorted spark plug (cracked or carbon clogged, etc.) (or bad ignition spark plug wire) grounds both the ignition spark and the false spark being used. This means that it also grounds the corresponding respective ignition spark of the other 180 degree out of phase cylinder (that uses the same the same coil because the spark current is connected to the spark plugs of two cylinders). Since such a defect allows more current to flow in the spark coil to two plugs when the resistance of the spark plug gap disappears due to a cracked plug, etc, it seems likely to hasten coil burn out if the spark plug/plug wire defect is not corrected before installing the new spark coil.
To explain further, wasted spark means that when a cylinder is ready to fire, it gets a spark to its spark plug while part of the spark (from the same coil and current) as a sort of copy is also sent to another cyclinder at the same time but when the piston in that cylinder is exhausting its ignited gases 180 degrees out of phase from when its spark is needed. When the second cylinder is ready to fire and receives its "spark, the first cyclinder the also receivesa "wasted" spark "copy" of the one needed by the second cylinder. Economy is achieved in manufacture because otherwise electronics would have to turn on and off four different spark coils to distribute four different sparks as needed to the four cylinders. With wasted sparks (which are cheap), because the spark current of one coil is connected (internally in the ignition coil unit) to two cylinders that are in the same position but 180 degrees out of phase in firing, the system can turn on and off two spark coils twice as fast with half the electronics and fire two cylinders that are 180 degrees out of phase. A four cylinder engine thus uses only two coils, a six cylinder engine, three coils, etc., in a wasted spark system.
Posted on Sep 15, 2008
SOURCE: MY 2005 PONTIAC G6 6
yeah dude that happened to me, i put subs in my 05 g6, it supposedly happens when the battery dies or u undo the batter, so i took it too a dealership and they tried making me pay $30 for them to tell me it doesn't work so being the angry person i gave them a few choice words and got out of the nice 30 bucks but they will make u pay for a new stock system for a nice $350 bucks which i told them to go screw themselves and i put the dash kit in so i could read the mpg temp and all that and just put a dvd player in it was better and looks better. and to get ur discs out u pull the stock system out get a screw driver and pliers and start taking the junk apart to get them
Posted on Oct 08, 2008
the o2 sensors are locted in the exhaust system. upstream is before cat converter, downstream is after cat converter.
Posted on Nov 22, 2008
SOURCE: 05 Ford F150 Radio doesn't work.
I had the same problem and i brought a new ford oem cd player 2 times and my mechanic says its an electrical problem with some fords not the Cd player or the radio. So your cd player may not be junk, it may be electrical or wiring problem.
Posted on Jun 07, 2009
pull out the fuse for your radio and turn the ignition to the on position and wait 10 secs. Then turn off the ignition, replace the fuse and turn to the on again. It may work as I've done this to other cars which have had cd's stuck
Posted on Sep 18, 2009
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