Merging EJ22T harness with 97 2.2NA (obd2)

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Furnace89
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Post by Furnace89 »

oh I see... I've got a huge mess of wires under the hood with the ecu, I wanted to get the engine running and then wire everything properly but it sound like I should just go ahead and wire it right. thanks a bunch for the quick help dude, ill report back in about an hour when its wired properly
1997 Legacy L Wagon, dd
1993 Toyota 4Runner SR5 4x4 5spd, parked
n2x4
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Joined: Tue Oct 18, 2005 3:52 pm
Location: Massillon, Ohio

Post by n2x4 »

Yeah, it's best to do it once and do it right. Otherwise you'll be chasing issues in circles. It's REALLY hard to troubleshoot issues after you've wired it all up, so triple check each connection before you decide it's golden and you wrap it in 2lbs. of electrical tape. It's easy to make mistakes - I know I went crosseyed a few times staring at all the wires. Good luck!
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Furnace89
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Posts: 38
Joined: Fri Mar 30, 2007 3:05 pm

Post by Furnace89 »

haha yeah I know exactly what you mean!

looks like its gonna be more than an hour to get that wired, im gonna have a bite to eat before I go crazy.

if there's a better way to get ahold of you just pm it to me, you probably have better things to do than check this thread every few minutes like im doing Haha.
cheers!
1997 Legacy L Wagon, dd
1993 Toyota 4Runner SR5 4x4 5spd, parked
Furnace89
In Neutral
Posts: 38
Joined: Fri Mar 30, 2007 3:05 pm

Post by Furnace89 »

Good news! I got it running and brought it back to my place 300km away :-D

I still have a few problems though, the main one confusing me is the fuel gauge... It was at a 1/4 tank when i started the swap, and once i swaped over the whole sending unit and pump from the turbo it read as empty. I filled it up and it read full but then after like 250km 100% highway it was back at empty. I realize the turbo motor is harder on gas but it shouldnt be that bad, i whent twice as far on a tank with the NA.
Also, could someone confirm that the ECU reads the water temp from a different lacation than the gauge cluster? During my swap i left the water temp and oil pressure switch unpluged because i couldnt find where it should be routed to the cluster, and i was in a hurry.

To get it to run i had to wire the wastegate control, pressure exchange solenoid, IAC, ignitor and injectors directly to the battery... not smart, i know, but it works for now. Could anyone confirm wether any of those draw power while the ignition is off?
1997 Legacy L Wagon, dd
1993 Toyota 4Runner SR5 4x4 5spd, parked
n2x4
Fourth Gear
Posts: 1522
Joined: Tue Oct 18, 2005 3:52 pm
Location: Massillon, Ohio

Post by n2x4 »

Furnace89 wrote:Good news! I got it running and brought it back to my place 300km away :-D
Good Job! Glad it worked out.
Furnace89 wrote: I still have a few problems though, the main one confusing me is the fuel gauge... It was at a 1/4 tank when i started the swap, and once i swaped over the whole sending unit and pump from the turbo it read as empty. I filled it up and it read full but then after like 250km 100% highway it was back at empty. I realize the turbo motor is harder on gas but it shouldnt be that bad, i whent twice as far on a tank with the NA.
Maybe a ground issue or a bad sending unit. That's the problem with old swaps - you never know if you're fixing old worn out components or something you did wrong!
Furnace89 wrote: Also, could someone confirm that the ECU reads the water temp from a different lacation than the gauge cluster? During my swap i left the water temp and oil pressure switch unpluged because i couldnt find where it should be routed to the cluster, and i was in a hurry.

Confirmed. The coolant crossover pipe has two sensors - a single wire sensor thats for the cluser, and a two wire sensor with a brown plug for the ECU.
Furnace89 wrote: To get it to run i had to wire the wastegate control, pressure exchange solenoid, IAC, ignitor and injectors directly to the battery... not smart, i know, but it works for now. Could anyone confirm wether any of those draw power while the ignition is off?
None of them draw power with the ignition off, but making them hardwired it's difficult to say what weird stuff they may do.

Are you concerned about draining the battery? Just test them with a volt meter for current draw. Only the ECU should be fed power with the ignition off on the "Backup power supply" line to keep what it's "learned" stored in memory, CEL codes, etc.
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Furnace89
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Joined: Fri Mar 30, 2007 3:05 pm

Post by Furnace89 »

Good to hear. Ill check those sensors for current draw asap, and definitely set them up with fuses.

I think ill take the sending unit back out and just take the pump out and place it inside the sending unit that was in the car before. The sensors all over the place, it was reading empty after only burning 20L.

Anyone have their ecu mounted solidly on the drivers side? If so, how did you do it?


Does anyone have a copy of the B10 Scan ISO to burn to a cd? The link on the official page doesn't work.
1997 Legacy L Wagon, dd
1993 Toyota 4Runner SR5 4x4 5spd, parked
n2x4
Fourth Gear
Posts: 1522
Joined: Tue Oct 18, 2005 3:52 pm
Location: Massillon, Ohio

Post by n2x4 »

Furnace89 wrote: Does anyone have a copy of the B10 Scan ISO to burn to a cd? The link on the official page doesn't work.
http://www.surrealmirage.com/vrg3/b10scan/ <-- that link works for me...
SUBARUEHS Racing
Furnace89
In Neutral
Posts: 38
Joined: Fri Mar 30, 2007 3:05 pm

Post by Furnace89 »

Well, my battery is dead this morning, hah figures.

So im looking to wire my wastegate control, pressure exchange solenoid, IAC, ignitor and injectors either on a switch with a fuse, triggered by the ignition OR wire everything into the 97's original wiring and share some of the power sources with the boost related sensors.
1997 Legacy L Wagon, dd
1993 Toyota 4Runner SR5 4x4 5spd, parked
n2x4
Fourth Gear
Posts: 1522
Joined: Tue Oct 18, 2005 3:52 pm
Location: Massillon, Ohio

Post by n2x4 »

I vote option 2. When I did my swap, I had to charge the battery numerous times...

Good luck!
SUBARUEHS Racing
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