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08-24-2013, 07:57 AM | #1 |
Scooby Newbie
Member#: 325196
Join Date: Jul 2012
Chapter/Region:
E. Canada
Location: Moncton, NB, Canada
Vehicle:2002 wrx wagon black |
P0340 after jdm wrx swap (camshaft position sensor) any ideas??
So a few weeks ago I spun a bearing on my 2002 wrx wagon. I swapped in a jdm ej20 longblock without avcs. I'm still running the canadian ecu on it. I tried to start it but nothing happened. After a bit of research, I figured out I had to switch the crankshaft gear and use the one that was on my old engine.
After that it started right up but the engine barely runs and the idle is incredibly shaky and I got p0340 cel (camshaft sensor). I then changed said sensor with the one from my old engine which I know works but it didn't even start. I triple checked the timing and it appears to be correct. If changing the sensor doesn't work does anyone have any idea what could cause this? Since the crankshaft gear was different, could the camshaft gear also be different? Any help would be greatly appreciated, thanks!
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Last edited by kartracing6; 08-24-2013 at 08:30 AM. |
08-24-2013, 12:48 PM | #2 |
Scooby Newbie
Member#: 325196
Join Date: Jul 2012
Chapter/Region:
E. Canada
Location: Moncton, NB, Canada
Vehicle:2002 wrx wagon black |
problem found, the jdm cam gear is different than the usdm one for some reason...
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04-08-2015, 10:14 AM | #3 |
Scooby Newbie
Member#: 412457
Join Date: Feb 2015
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Hm, I've done the same swap and am experiencing the same problems. Switched the sensor and cam gear from my USDM one and the engine is still shaky and barely idles. Could I have the timing wrong? I used the little notch to time the engine not the arrow. Not sure if this is the problem?
Any help? |
04-08-2015, 03:45 PM | #4 |
Scooby Newbie
Member#: 306619
Join Date: Jan 2012
Location: oceanside CA
Vehicle:04 Subaru Black |
If you ever have this code thrown at you. A faulty alternator WILL cause this. Even if you take a voltmeter to the Alt and gives 14v + output. (idle, revved up a bit, Full AC on, headlights, every possible load) and still gives 14+ volts it can still cause this code. Not very knowledgeable on the small parts inside an Alternator but something inside causes it. Just for anyone still still with this PITA code.
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04-08-2015, 04:38 PM | #5 |
Scooby Specialist
Member#: 59182
Join Date: Apr 2004
Location: N. Idaho
Vehicle:2002 WRX GG>> 2016 Focus RS |
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04-08-2015, 11:09 PM | #6 | |
Scooby Newbie
Member#: 412457
Join Date: Feb 2015
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Quote:
Right, that's what I meant I used these, and my idle is extremely rough.. Roughly about 500RPM. Which is weird. Found out one injector is out, could this be the problem to this code? |
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04-08-2015, 11:12 PM | #7 | |
Scooby Newbie
Member#: 412457
Join Date: Feb 2015
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Quote:
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09-26-2020, 03:55 PM | #8 |
Scooby Newbie
Member#: 6845
Join Date: May 2001
Location: Bay Area, CA
Vehicle:1999 Outback Sport White/Titanium |
ATTENTION: Subaru uses the same connector for the cam sensor as it does for the #4 fuel injector.
Both are grey 2 wire connectors, both are interchangeable. Its unintuitive because it appears that the injector plugs & wires come out of the harness as a set, with the cam sensor as an outlier.... which is not true. |
09-28-2020, 02:17 AM | #9 |
Scooby Newbie
Member#: 518950
Join Date: Sep 2020
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Have you had any other codes thrown, or just P0340? Just curious because I’m trying to diagnose some things in my car, and have read that the camshaft position sensor could play a roll.
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