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2jz swap

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#1 Demesio

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Posted 15 February 2012 - 05:05 PM

alright dammit,

I've had this damn 2jzge in my car for almost a year, and ever since the damn beginning, i cant get the oil light to go away. Its a sc ecu with the gs front sump, i don't know if its just the different oil level sensor being weird or what. I've got it wired backwards or so i think, because when i floor it or make a turn it turns off, unlike how it should turn on. I have switched the damn wires on the plug itself and then i don't get any response at all just light stays on all the time. and the stupid switch cant be upside down BECAUSE IT JUST CANT! I don't have any oil issues, i just want the light to work the right way. -_-

#2 Foompla

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Posted 15 February 2012 - 05:10 PM

measure the oil pressure. its just a switch. on the 7m the spec was 5psi. it is probably similiar on the 2j. Oil pressure is directly correlated to engine RPM.



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#3 Demesio

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Posted 15 February 2012 - 05:13 PM

but why would it turn off at full load? or when i make a hard turn where the oil would move and change the level?

#4 Foompla

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Posted 15 February 2012 - 05:41 PM

I cant finemy wiring diagram. Your looking at the sensor in the side of the block, not the floater in the oil pan right?

In the cressida its a ground side switch. Unplugging it will make sure the light never comes on. Assuming that the 2j is the same way, unplug it and do see if the light doesnt come on. If it does, you have a short to ground.



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#5 Demesio

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Posted 15 February 2012 - 08:46 PM

i'll check the EWD, and get back to you. i does look like it reads off the floater

#6 Foompla

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Posted 16 February 2012 - 10:44 AM

no, I just looked at the wiring diagram. Thats the oil level switch. Not the oil pressure switch. The oil circuit in the SC works the same way as the x8.

do the unplug thing and work from there.



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#7 Kyle

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Posted 18 February 2012 - 07:24 AM

how can you have it wired backwards it's a 1 wire ordeal, should be yellow/black stripe, ik1 plug iirc, possibly pin 20. that's for a 92, should be the same damn near all the way up.

#8 Demesio

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Posted 18 February 2012 - 09:13 AM

it reads the floater at the pan... no the oil pressure level, its a black and purple wire and a the ground... this is stupid, it seems it works only one way and its always on rather than off

#9 Foompla

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Posted 18 February 2012 - 09:18 AM

no.



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"Those are the head gaskets you COULD be saving by switching to JZXproject."

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#10 Demesio

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Posted 18 February 2012 - 09:26 AM

well then my oil pressure sensor must be broken, cuz im not getting anything from it :/

#11 Demesio

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Posted 21 February 2012 - 08:23 PM


here's a video, i get some feed back, its connected to the oil level floater. Connecting it to the pressure sensor just stays on at all times.

#12 Foompla

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Posted 21 February 2012 - 08:48 PM

I dont know why your connecting anything to the floater.

Disconnect the fucking floater.

Key on- engine off.

Unplug the 1 wire sending unit.

Does the light go off?
no? You have a short
yes? good.

Start the car. Light stays off? Good. Shut the car off.
Do a barrel roll.
Ground the wire going to the sending unit and the light should stay on all the time. If it doesn't, you have an intermittent issue. DIag as necc.

Verify that that the sending unit reads open between engine ground and the wire pin using an ohm meter. The spec for the switch is about 5psi. You can either figure out how to test the switch or just swap it out with a known good unit.

Start the car.

Congratulations - your motor has low oil pressure. Time for a 1j.



"What's that?"

"Those are the head gaskets you COULD be saving by switching to JZXproject."

*music*

-end jzxproject.com commercial

#13 Demesio

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Posted 21 February 2012 - 09:25 PM


Thank you

I'll get back to you on that, till then.. enjoy :)

#14 Foompla

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Posted 22 February 2012 - 06:14 PM

GL bud.



"What's that?"

"Those are the head gaskets you COULD be saving by switching to JZXproject."

*music*

-end jzxproject.com commercial




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