Another 1jz help thread.. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

coBBz · 03-18-2017, 05:27 PM

I've searched and searched, but I couldn't find the answers I'm looking for. I have a 1jzgte vvti from a toyota soarer and I want to know where these plugs go into.

(brown, green, blue)

(white, orange)

Could these plugs be the reason my engine doesn't start? Engine has power to the injectors, fuel pump, and coils.. Any help is appreciated, thanks.

coBBz · 03-19-2017, 11:52 AM

Still looking for answers

di-devol · 03-22-2017, 02:36 PM

Here is a side shot:

I am guess that they are for the A/C compressor. Is the a/c compressor removed from the car?

coBBz · 03-22-2017, 02:43 PM

Quote:

Originally Posted by di-devol

I am guess that they are for the A/C compressor. Is the a/c compressor removed from the car?

I think you're right, there's no compressor on my car. I guess I'm still chasing gremlins trying to get this car to start..was hoping this was the reason. Appreciate the response man thanks.

Gremo · 03-22-2017, 03:03 PM

What chassis is the swap in?

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coBBz · 03-22-2017, 04:17 PM

Quote:

Originally Posted by Gremo

What chassis is the swap in?

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It's in a Lexus sc300

Gremo · 03-22-2017, 04:19 PM

Does it crank but not start? What ecu are you using?

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coBBz · 03-22-2017, 04:24 PM

Quote:

Originally Posted by Gremo

Does it crank but not start? What ecu are you using?

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Yup exactly that, 155 compression across the board. Using a 1jz gte m/t ecu from a soarer.. http://m.imgur.com/AhLvthR?r

Gremo · 03-22-2017, 04:29 PM

Map sensor is good? Correct voltage to cam and crank sensors?

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coBBz · 03-22-2017, 04:57 PM

Currently running a maf sensor. Haven't checked the cam and crank sensors yet, just got it to prime fuel and currently changing the grounds out. I'll check those tonight. Appreciate the responses by the way. Anything else that should be checked for a car that hasn't started since the swap six years ago?

di-devol · 03-22-2017, 06:59 PM

Quote:

Originally Posted by coBBz

Currently running a maf sensor. Haven't checked the cam and crank sensors yet, just got it to prime fuel and currently changing the grounds out. I'll check those tonight. Appreciate the responses by the way. Anything else that should be checked for a car that hasn't started since the swap six years ago?

Is the maf good?

coBBz · 03-22-2017, 08:42 PM

Quote:

Originally Posted by di-devol

Is the maf good?

It should be able to just start even with a bad maf, right? If not, I'll check along with the crank and cam sensors.. Thought this engine would be as simple as an sr20 fml

Gremo · 03-22-2017, 08:46 PM

Quote:

Originally Posted by coBBz

It should be able to just start even with a bad maf, right? If not, I'll check along with the crank and cam sensors.. Thought this engine would be as simple as an sr20 fml

I know you said you have power the the Injectors but are they actually pulsing? Also you have power to the coils but have you visually seen spark?

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coBBz · 03-22-2017, 08:50 PM

Quote:

Originally Posted by Gremo

I know you said you have power the the Injectors but are they actually pulsing? Also you have power to the coils but have you visually seen spark?

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Plugs were wet with gasoline when I pulled em after cranking for a bit. Checked the voltage on the plugs to the coils, it was getting 12v, but no I haven't visually seen them spark, I'll add that to the list of things thanks!

coBBz · 03-23-2017, 12:07 PM

Getting zero visible spark and where the hell are the cam and crank sensors I can't find any information on them..

di-devol · 03-23-2017, 12:12 PM

The crank angle sensor is lower left

1jz vvti IS an interference engine, you can butt-fuck the valves if the mechanical timing is off. Be careful.

Gremo · 03-23-2017, 12:50 PM

Quote:

Originally Posted by coBBz

Getting zero visible spark and where the hell are the cam and crank sensors I can't find any information on them..

Chase the spark issue first. Maybe there's a ground off the coil harness somewhere not attached. I'm not familiar with these motors but some do have an extra ground there.

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coBBz · 03-23-2017, 01:38 PM

Quote:

Originally Posted by di-devol

The crank angle sensor is lower left

1jz vvti IS an interference engine, you can butt-fuck the valves if the mechanical timing is off. Be careful.

Alright, Im going to take it out and test for continuuity and voltage after I get the coils to fire.

Quote:

Originally Posted by Gremo

Chase the spark issue first. Maybe there's a ground off the coil harness somewhere not attached. I'm not familiar with these motors but some do have an extra ground there.

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Didn't see any grounds there, but I might just give power through a switch to the injectors and coils if that would work? I'll also try and pick up a working igniter to rule that out as well and trust me man I'm sure you're 10x more familiar with this engine than me, I am lost lol.

Some background on the car just in case this might help..

Six years ago the previous owner had a running 2jzgte in the car and swapped it out for a 1jzgte.. Got the engine in and the harness done by Dr. Tweak in Phoenix, AZ. Harness came back and was never plug-n-play. After sending the harness back and forth the owner gave up on it and the issue was never resolved. Six years later, I take ownership of the car.. Harness is plugged up and the swap is complete, but still with the issue. Barely got it to crank a few days ago to check compression and all is good there. Some random relays here and there that I have no idea where they go, planning on removing these and anything unnecessary and wiring it up to it's original state before I start messing with it myself. Just trying to gather information on this swap because I can barely find any information about it.

I really appreciate the help here, I hope others can take something from this thread as well.

di-devol · 03-23-2017, 02:00 PM

Quote:

Originally Posted by coBBz

Some background on the car just in case this might help..

Six years ago the previous owner had a running 2jzgte in the car and swapped it out for a 1jzgte.. Got the engine in and the harness done by Dr. Tweak in Phoenix, AZ. Harness came back and was never plug-n-play. After sending the harness back and forth the owner gave up on it and the issue was never resolved. Six years later, I take ownership of the car.. Harness is plugged up and the swap is complete, but still with the issue. Barely got it to crank a few days ago to check compression and all is good there. Some random relays here and there that I have no idea where they go, planning on removing these and anything unnecessary and wiring it up to it's original state before I start messing with it myself. Just trying to gather information on this swap because I can barely find any information about it.

I really appreciate the help here, I hope others can take something from this thread as well.

Ew, might be time to just get a harness.

coBBz · 03-23-2017, 02:07 PM

Quote:

Originally Posted by di-devol

Ew, might be time to just get a harness.

Trust me man, I want to.. badly

but I have to give this one a chance and rule some things out before I drop a grand on a Wiring Specialties one. A lot of people say the 1jz ECU's like to shit on themselves too, so even if I get a new harness it still might not fire lmao lord help me

coBBz · 04-02-2017, 09:47 AM

Just a little update for those interested. Sensors checked out. Got the engine to start after six years lol. It was completely missing a pin on the EFI Main Relay Switched Power and the igniter was bad. So now the engine turns over and won't rev pass 2000rpm. Upon further investigation there's a ton of pins missing and a few going to absolutely nothing. Might consider a plug-n-play harness or repinning the whole harness..

Again, I appreciate the help and suggestions.

corkscrew · 04-02-2017, 09:50 AM

Good find man. I have a wiring specialties 10% off code from a fellow jz zilvia member if you need it. Good luck

coBBz · 04-02-2017, 10:18 AM

Quote:

Originally Posted by corkscrew

Good find man. I have a wiring specialties 10% off code from a fellow jz zilvia member if you need it. Good luck

Thats awesome man, I'll hit you up if it comes down to it thank you.

So I quickly made this little diagram of my ECU pinout compared to the JZZ30 pinout. Could these missing wires be the reason my car won't go passed 2000 rpms lol

Yellow box is a random wire connected to that pin and the color of the wire. Red box is wires completely unattached.

EDIT : This is the INCORRECT diagram...

THIS ONE IS FOR THE 1JZ-GTE VVT-I and EVERYTHING checks out.

03-18-2017, 05:27 PM	#1
coBBz Zilvia Member Join Date: Jun 2016 Location: California Age: 29 Posts: 166 Trader Rating: (3) Feedback Score: 3 reviews	Another 1jz help thread.. I've searched and searched, but I couldn't find the answers I'm looking for. I have a 1jzgte vvti from a toyota soarer and I want to know where these plugs go into. (brown, green, blue) (white, orange) Could these plugs be the reason my engine doesn't start? Engine has power to the injectors, fuel pump, and coils.. Any help is appreciated, thanks. Last edited by coBBz; 03-18-2017 at 07:22 PM..

03-22-2017, 02:36 PM	#3
di-devol Zilvia FREAK! Join Date: Jun 2010 Location: Woodinville Age: 42 Posts: 1,412 Trader Rating: (5) Feedback Score: 5 reviews	Here is a side shot: I am guess that they are for the A/C compressor. Is the a/c compressor removed from the car? __________________

03-23-2017, 12:12 PM	#16
di-devol Zilvia FREAK! Join Date: Jun 2010 Location: Woodinville Age: 42 Posts: 1,412 Trader Rating: (5) Feedback Score: 5 reviews	The crank angle sensor is lower left 1jz vvti IS an interference engine, you can butt-fuck the valves if the mechanical timing is off. Be careful. __________________

03-19-2017, 11:52 AM	#2
coBBz Zilvia Member Join Date: Jun 2016 Location: California Age: 29 Posts: 166 Trader Rating: (3) Feedback Score: 3 reviews	Still looking for answers

03-22-2017, 03:03 PM	#5
Gremo Zilvia Member Join Date: Apr 2016 Location: New England Posts: 164 Trader Rating: (3) Feedback Score: 3 reviews	What chassis is the swap in? Sent from my SAMSUNG-SM-G930A using Tapatalk

03-22-2017, 04:19 PM	#7
Gremo Zilvia Member Join Date: Apr 2016 Location: New England Posts: 164 Trader Rating: (3) Feedback Score: 3 reviews	Does it crank but not start? What ecu are you using? Sent from my SAMSUNG-SM-G930A using Tapatalk

03-22-2017, 04:29 PM	#9
Gremo Zilvia Member Join Date: Apr 2016 Location: New England Posts: 164 Trader Rating: (3) Feedback Score: 3 reviews	Map sensor is good? Correct voltage to cam and crank sensors? Sent from my SAMSUNG-SM-G930A using Tapatalk

03-22-2017, 04:57 PM	#10
coBBz Zilvia Member Join Date: Jun 2016 Location: California Age: 29 Posts: 166 Trader Rating: (3) Feedback Score: 3 reviews	Currently running a maf sensor. Haven't checked the cam and crank sensors yet, just got it to prime fuel and currently changing the grounds out. I'll check those tonight. Appreciate the responses by the way. Anything else that should be checked for a car that hasn't started since the swap six years ago?

03-23-2017, 12:07 PM	#15
coBBz Zilvia Member Join Date: Jun 2016 Location: California Age: 29 Posts: 166 Trader Rating: (3) Feedback Score: 3 reviews	Getting zero visible spark and where the hell are the cam and crank sensors I can't find any information on them..

04-02-2017, 09:47 AM	#21
coBBz Zilvia Member Join Date: Jun 2016 Location: California Age: 29 Posts: 166 Trader Rating: (3) Feedback Score: 3 reviews	Just a little update for those interested. Sensors checked out. Got the engine to start after six years lol. It was completely missing a pin on the EFI Main Relay Switched Power and the igniter was bad. So now the engine turns over and won't rev pass 2000rpm. Upon further investigation there's a ton of pins missing and a few going to absolutely nothing. Might consider a plug-n-play harness or repinning the whole harness.. Again, I appreciate the help and suggestions.

04-02-2017, 09:50 AM	#22
corkscrew Zilvia Addict Join Date: Oct 2009 Location: Florida Posts: 690 Trader Rating: (5) Feedback Score: 5 reviews	Good find man. I have a wiring specialties 10% off code from a fellow jz zilvia member if you need it. Good luck