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NOSUP4U
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2,776 Posts
Discussion Starter #1 (Edited)
Alright, got my JDM GTE motor running last night and all is good besides the fact its running 10.0-11.0 AFR's at idle. It was breaking up real bad with any type of throttle but I changed the plugs and that fixed that. It is also throwing the following codes:
21 and 31. I have tried using 2 different used o2 sensors, but maybe I just need to buy a new one?

Heres my setup:
JDM GTE
USDM cams
SAFCII
USDM 550cc injectors w/ resistor box
JDM ECU
T67 DBB
4" turboback

Any help is much appreciated

At this point, I have swapped map sensors, plugged and unplugged SAFC, messed with TPS sensor, and IACV and nothing helps, it dumps crazy fuel idling..
 

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NOSUP4U
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Discussion Starter #2
anyone?
 

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Greg, I can assure you there is nothing wrong with the sensor I sent you it may have 10k on it and even with my car knocking like a pair of 15's it ran absolutely fine.

Jason
 

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NOSUP4U
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2,776 Posts
Discussion Starter #4
Well I cant get the damn thing to get out of the 10s and 11s at idle..I have tried 3 sensors now, reset ecu..idk what else to do...
 

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did you check the map sensor? unplug it and see if anything changes
 

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NOSUP4U
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Discussion Starter #6
unplugged it and nothing changed..
 

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0 to gas station in 5 sec
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What harness are you using? If it's USDM, did you modify it to work with the MAP setup?
 

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JDM Harness adapted to NA USDM harness, JDM ECU
 

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NOSUP4U
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Discussion Starter #10
I re-used the Map sensor that came with my JDM GTE...im thinking that could be the problem. Its also not seeing any of the changes i make on my SAFC. Im using a JDM harness merged with NA harness
 

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how did you wire the SAFCII Greg?

according to the instructions for the SAFC, depending on what year model the aristo ecu is out of the wiring is different, 1 ( 91 to 97.7 ) calls for T7-c and the other ( 97.8 - 00 ) T10-c

http://www.apexi-usa.com/content/pdf6807.pdf
it came out of a 94 so its correct.....BUT he has it set up for hotwire and not pr-1. He should have it changed and call me back in a few with the result.

Jason
 

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NOSUP4U
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Discussion Starter #14
switched it to pressure, and nothing changes...it still idles at 10.0 AFR's
 

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Maybe this is a stupid question, but are you still getting AFR's of 10-11 after it warms up? Or are you getting 10 at cold and you haven't run it long enough to warm up?
 

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NOSUP4U
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Discussion Starter #16
warm or cold..doesnt matter..I have not driven it however as im waiting for my throttle cable to come in tomorrow.
 

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NOSUP4U
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Discussion Starter #18
Wish i could tell you..Has me stumped as well!
 

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Maybe another stupid question, but are you sure it's a JDM ECU? I would guess you brought in a half cut, so the ECU came with the engine and whatever else you got, but if you have picked up the ECU from somewhere else maybe just do a double check to confirm it's a JDM ECU.
 
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