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Old 01-08-2012, 12:44 PM   #1
TommyAtomic
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Member#: 257043
Join Date: Sep 2010
Chapter/Region: VIC
Location: Vancouver BC
Vehicle:
1993 JDM WRX Wagon
Black

Default CEL: Crank sensor

Tried the search button with no luck. Yesterday on my way to the shop to have an unrelated issue resolved (the rightside CV axle replaced) my CEL came on and stayed on. I shut down the car on a side street and checked everything. Nothing loose, nothing burning, no low fluids. I start the car up with no effort and and no CEL so I go get the axle replaced. CEL comes back on kilometers later.

I plug in evoscan and do a quick check and it looks ok but the logs indicate that the most recent error was a crank position sensor error.

Oddly enough the car starts and runs just fine.

Since evoscan will read from SSM1 jdm subaru's but really it doesnt have the correct profile for it (it wont/doesnt have the ability to clear codes, reads engine rpm wrong, alt voltage wrong, other issues) its a best guess as to if the code is legit. I dont feel like spending hours in a chair creating a proper 93 ej20g profile for evoscan so that I can immediately afterwards spend time under the hood.

Assuming it is actually in need of replacing what year/model do I get a crank sensor from to go in my 93 EJ20G?

My use of the search button tells me that it is :

"EJ motor: On the front of the engine, behind the pulley, below the Alternator, mounted in the top of the Oil Pump, pointing down at the Crank."

I believe that the crank pully has to come off so I might look at a new light weight crank pully. Turn my repair into an upgrade.
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Old 01-08-2012, 01:45 PM   #2
TommyAtomic
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Member#: 257043
Join Date: Sep 2010
Chapter/Region: VIC
Location: Vancouver BC
Vehicle:
1993 JDM WRX Wagon
Black

Default

I stand seriously self corrected. The Crank Sensor is as far I a can tell the easiest to replace most accessible sensor on the whole damn engine. 1 stubby 10mm wrench and a 10mm bolt later I pulled the sensor. It looked new but the bottom was cover in chunky sludge. Cleaned it off with a shop towel, reinstalled it and started right up. Normally its a 2 turn startup. The cold idle was really high 1650rpm but leveled out after about 20 seconds.

Apparently a crank sensor is not even remotely close to being an excuse to replace the crank pully.

Went for a little drive and no more CEL
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Old 01-08-2012, 01:50 PM   #3
07wrx84
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Join Date: Jul 2010
Chapter/Region: RMIC
Location: Da-Boonies... 801
Vehicle:
07 WFC #900
@ 451awhp-404awtq

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Sweet...
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Old 01-08-2012, 03:48 PM   #4
TommyAtomic
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Join Date: Sep 2010
Chapter/Region: VIC
Location: Vancouver BC
Vehicle:
1993 JDM WRX Wagon
Black

Default

Carp, Crap, Crap, Carp

100 kilometers. CEL back. Pulled Crank sensor. Still shiny and clean.

Will doublecheck with evoscan to see if its the same issue.

Original question stands : what year/model do I get a crank sensor from to go in my 93 JDM EJ20G?

Ideas?

A little more searching reveals someone in the ej20g/ej20k thread who was going to try the 02 wrx crank sensor but I havent yet seen any followup as to if that worked or not.

Last edited by TommyAtomic; 01-08-2012 at 03:57 PM.
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Old 01-09-2012, 05:26 PM   #5
kyleyap
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Join Date: Jun 2009
Chapter/Region: VIC
Location: Surrey,BC
Vehicle:
1995 WRX Type RA
JDM YO!!

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I think it was an 02/03 wrx my bro got for his Sti
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Old 01-09-2012, 08:18 PM   #6
cal_look_zero
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Chapter/Region: NWIC
Location: Grass Pants, OR
Vehicle:
1997 Outback Sport
383hp/345tq

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Crank sensors are bitchy. They're a magnetic trip coil sensor; they read off the long teeth on the back of your crank timing pulley. Just replace it with a new one. They're (in my experience) only a 2 (newer) or 3 (older) wire set up. The old ones are insanely spendy since the 3rd wire is copper shielding.
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Old 01-09-2012, 09:52 PM   #7
69subaru360
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Location: Maine
Vehicle:
1995 WRX
1998 2.5 RS

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same as usdm wrx or most ej engines except the really early legacy.
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Old 01-13-2012, 03:52 PM   #8
TommyAtomic
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Member#: 257043
Join Date: Sep 2010
Chapter/Region: VIC
Location: Vancouver BC
Vehicle:
1993 JDM WRX Wagon
Black

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02/03 WRX sensor did the job.
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