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2008 STi engine install - need help with a couple harness connectors & evap system

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2008 STi engine install - need help with a couple harness connectors & evap system

I have a few connectors from the engine harness that I'm unsure of.

This connector is near the throttle body, but I can't figure out what it connects to...


These two connectors are identical, both fit the evap assmebly, but there's only room for one and all nearby sensors are connected...


I also have a question about what I believe is part of the evap system and how it all connects.

Not quite sure how this all comes together, should have taken more pics before removing...
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Re: 2008 STi engine install - need help with a couple harness connectors & evap syste

the one in the top picture looks like it goes to a air pump valve. if you have done an airpump delete maybe thats why it is missing? i believe this one is disconnected on mine as well and i have the air pump hardware removed. i just tore mine completely apart to install pistons a month ago. my advice for next time is paint marker label every connection with a letter and same with hoses connections.

in the second are the two connectors different colors? if they are grey and black the picture i have of mine show the black one going to the connection with the hoses from picture 3.

in the 3rd picture the hose that is loose with the ? goes to the bottom of the 2 ports shown. the top port goes to a tee fitting. i cant see where the intake line terminates and dont remember off the top of my head
Re: 2008 STi engine install - need help with a couple harness connectors & evap syste

the one in the top picture looks like it goes to a air pump valve. if you have done an airpump delete maybe thats why it is missing? i believe this one is disconnected on mine as well and i have the air pump hardware removed. i just tore mine completely apart to install pistons a month ago. my advice for next time is paint marker label every connection with a letter and same with hoses connections.
I thought it was for the pump hardware, but I pulled the pump and valve out of the bin in the garage and didn't see one that matched up.

in the second are the two connectors different colors? if they are grey and black the picture i have of mine show the black one going to the connection with the hoses from picture 3.
They're both identical connectors, both black and 2-pin.

in the 3rd picture the hose that is loose with the ? goes to the bottom of the 2 ports shown. the top port goes to a tee fitting. i cant see where the intake line terminates and dont remember off the top of my head
Thanks, hopefully someone can chime in with more details.

Also, is there a good way to tell if I have the injector wires connected to the correct injectors?
Re: 2008 STi engine install - need help with a couple harness connectors & evap syste

honestly the only other thing i can think of in that area is the knock sensor. it mounts directly below the bypass valve under the intake. the injector wires i think are somewhat different lengths. i just got back from 2 days worth of racing so maybe ill go outside tomorrow in the daylight and take a look at mine and see if i can help you out any better.
Re: 2008 STi engine install - need help with a couple harness connectors & evap syste

i just posted in your thread on SCS about the solenoid connections.



injector wires: yes, spud has it right. The connectors lead to each injector. if your wiring harness is in the right location, there's no way to incorrectly connect them.

Picture 1: it's one of these:
knock sensor, light gray, 2 pin
MAP sensor, black, 3 pin
secondary air combination valve, black, 2 pin

it looks gray and has 2 pins in the photo, so i'm guessing knock sensor.
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Re: 2008 STi engine install - need help with a couple harness connectors & evap syste

i just posted in your thread on SCS about the solenoid connections.

Image Link
Nice, thanks! :)

I'm going to have to find the #1 in that pic, where is it typically located?
Re: 2008 STi engine install - need help with a couple harness connectors & evap syste

I believe solenoid #1 is under the intake manifold. I don't quite remember from the last time I took off the intake manifold but that was something I didn't touch for the intake manifold removal iirc.
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