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Old 01-27-2003, 10:05 AM   #1
jaybaroo
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Member#: 11149
Join Date: Oct 2001
Location: Kansas City, MO
Vehicle:
2000 Outback Sport
Blue Ridge Pearl

Default Coil Question

Does anybody know if the stock coil output is infinately variable, or stepped? I'm trying to figure out a misfire problem...

Thanks,

Jay
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Old 01-27-2003, 11:11 AM   #2
Chav
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Member#: 3269
Join Date: Dec 2000
Chapter/Region: SCIC
Location: San Diego
Vehicle:
2001 2.5RS Sedan STM
RSTi

Default

Not for sure, but I could see the stock ecu varying the output based on dwell time. I dont know if it does though.

Sorry I cant help. Free bump for ya though.

-Chav
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Old 01-28-2003, 02:01 PM   #3
jaybaroo
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Member#: 11149
Join Date: Oct 2001
Location: Kansas City, MO
Vehicle:
2000 Outback Sport
Blue Ridge Pearl

Default

Thanks anyway, Chav.. I'm trying to figure out why I'm getting a misfire at low RPM's under medium-to-heavy accelleration, but not at high RPM...

If the coil is stepped, therefore pushing higher current throughout a set RPM range, then I most likely have a coil problem. If not, then I'll look elsewhere for the culprit...

Any suggestions would be helpful...

jay
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Old 01-30-2003, 03:46 PM   #4
jaybaroo
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Member#: 11149
Join Date: Oct 2001
Location: Kansas City, MO
Vehicle:
2000 Outback Sport
Blue Ridge Pearl

Default

Come on, there has GOT to be someone that has the tech knowledge for this in here!

Anyone??

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Old 01-30-2003, 05:42 PM   #5
BOY
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Member#: 232
Join Date: Sep 1999
Chapter/Region: MWSOC
Location: Ft Wayne, IN
Vehicle:
99 RS-T RIP
02 Forster-S

Default

I'm no expert but I was under the impression that the current should be relatively constant (linear). If you're getting a midrange hesitation/misfire it could be several things other than a coil problem. What is your AFR, are you running pig rich (which n/a EJs are notorious for). Are you running too lean, detonating and having timing retarted by the ECU? What is the gap on your plugs? What is the condition of your plugs? Is there any sign of arcing either from the coil or from a wire(s)? Do you have any deposits on the coil terminals? BTW, the coils from 99+ (non-EJ20) are known to go out for no apparent reason... one of the many subaru quirks.
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