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Old 05-06-2010, 05:26 PM   #1
FATgc8
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Default A lot of CEL codes on my ej20g swap... Please help..

Ok so i got a auto 91 legacy ss with a 97 jdm ej20g swap from a jdm forestor.I used the ej22t ecu and the harness on the car.It has been running great since i did the swap. About once a month i would start my car and would get a cel on. I did a couple of things to try to get it to stop but what i found worked was i just pulled one of the plug wires off the coil pack until it died and then put it back on and start the car and it would clear the code and run fine. A week ago it came back on and i haven't got it to go away since. I tried putting bigger injectors in (jdm 440cc). Checked my plugs, coil pack, iac, any open vacuum lines etc and cant come up with nothing. I did a diagnostic check and it threw up the 51 code which is the inhibitor switch. I went to the local junkyard and bought another switch and installed it and nothing has changed. Now for some reason it will throw up 44 - (Wastegate control solenoid valve) 35 - (Purge control solenoid valve) 24 - (Idle air control solenoid vavle) and including 51-(inhibitor switch). I am lost as what i should do next.
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Old 05-06-2010, 05:50 PM   #2
Cbgrandtheftauto
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'13 BRZ

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cheap way???...pull the check engine bulb

right way???...check for vaccume leak(thats what it sounds like to me...im sure others will chime in soon enough)

and when you say JDM 440CC injectors...what color are the injectors??
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Old 05-06-2010, 06:50 PM   #3
FATgc8
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Quote:
Originally Posted by Cbgrandtheftauto View Post
cheap way???...pull the check engine bulb

right way???...check for vaccume leak(thats what it sounds like to me...im sure others will chime in soon enough)

and when you say JDM 440CC injectors...what color are the injectors??

The injectors are grey. I want to find out what the problem is with the car instead of pulling the bulb. If the green connectors are plugged in the car acts fine it just dies when you mash on the throttle with the green connectors not plugged the car is in limp mode, misfiring and bucking all over the place on idle.
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Old 05-06-2010, 07:25 PM   #4
Cbgrandtheftauto
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Quote:
Originally Posted by FATgc8 View Post
The injectors are grey. I want to find out what the problem is with the car instead of pulling the bulb. If the green connectors are plugged in the car acts fine it just dies when you mash on the throttle with the green connectors not plugged the car is in limp mode, misfiring and bucking all over the place on idle.
its susposta be in limp mode with those codes...I cant remember which code but one is for your wastegate..I think it was code 4x IIRC

but the injectors...the 440cc injectors are OEM for the late G forester engine.

did you turn the boost up any??...
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Old 05-06-2010, 09:34 PM   #5
ncarn8
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because the various sensors talk to each other, if one is out you sometimes get more than one code. IACV codes can come from a MAF that is dodgy, and if your map sensor is bad the duty solenoid code can come up as well. Not always, but ive seen them go haywire plenty of times.
I would make sure you have no leaks first, then swap a known good MAF sensor in there, then swap a known good boost control assemby in as well. Just take the whole plate and swap it in, all lines and plugs.
Also remove the IACV and clean it up, make sure all the black greasy crap is gone, and clean down the hole too. Then pull the plugs, clean them up and reinstall.
If its still no good, you may have to get the multimeter out and start looking for a pinched wire or a short somewhere.
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Old 05-07-2010, 07:08 PM   #6
FATgc8
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-cleaned the iac
-cleaned the maf with maf cleaner
-the plugs are brand new ngk iridiums
-check all vacuum lines and they all seem to be plugged in

What i did do last night though, was cleaned the negative battery terminal because the inside of it was rusted. Unplugged the green connectors and the light hasn't come on yet. Well see if this solved the issue.
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Old 05-08-2010, 03:10 AM   #7
RHD 93 STi
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good luck. still workin on mines
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