Missing Plugs

MrMK3-707 · 12-26-2010, 10:55 AM

Can somone tell me what these plugs go to. I just replaced the Headgasket and plugge up everything i could and all that was left was these. The one on the exhaust side wasnt plugged in at all

907mge · 12-26-2010, 02:54 PM

I think what they are is the plugs for the actuators for the adjustable suspension that you don't have. I also have the same loose plugs. I'm guessing that toyota did not want to make too many different wiring harnesses so they made them all with these plugs.

cre · 12-26-2010, 06:19 PM

The first and second pics look like the harness connection for the automatic transmission... M/T guys just get used to ignoring them, but that's the only 4 pin connector in that area that I can think of. Check the wire colors in the TEWD to verify.

The third pic does look like a connector for the TEMS option, but for not having been plugged in for 20 years, wow it does look clean... There should be a matching one on or near each strut tower.

MrMK3-707 · 12-27-2010, 06:33 AM

Thanks for the help. Just didnt want to leave anything unplugged that would stop the car for starting. Turns out that the ignition coil went bad because there was no spark comming from it when i turned the key.
Lets hope the new one gets it to start

MA70-3.0GT · 12-29-2010, 05:22 PM

Just a thought, did you reconnect the earth wire to the coil pack? Not sure if it's the same on N/A but on the turbo the coil pack has a seperate earth wire that needs to be hooked up (it was snapped on mine!)

MrMK3-707 · 12-29-2010, 08:51 PM

Quote:

Originally Posted by MA70-3.0GT

Just a thought, did you reconnect the earth wire to the coil pack? Not sure if it's the same on N/A but on the turbo the coil pack has a seperate earth wire that needs to be hooked up (it was snapped on mine!)

The coil only has one plug comming from it and its plugged up. And it has a solid ground too. So im still lost on why its not sparking

MA70-3.0GT · 12-31-2010, 07:49 PM

Could be a faulty igniter (the GE motor also uses this system) or a fault within the distributor/rotor arm...

Hopefully this link will help with what to look at & where Mr. T has it hidden http://www.cygnusx1.net/Supra/Librar....aspx?S=IG&P=1 hth

EDIT-: More specifically, this checklist should get you sorted http://www.cygnusx1.net/Supra/Librar...Section=IG&P=5 Follow that baby & you'll find the problem in next to no time

MrMK3-707 · 01-01-2011, 02:33 AM

Cant be the igniter either cuz i tested it on my friends MK3 and it works fine. Im gonna replace the distributor and see what happens next

12-26-2010, 10:55 AM	#1
MrMK3-707 Stock Join Date: Dec 2010 Location: Fairfield CA Posts: 13	Missing Plugs Can somone tell me what these plugs go to. I just replaced the Headgasket and plugge up everything i could and all that was left was these. The one on the exhaust side wasnt plugged in at all Attached Thumbnails Last edited by MrMK3-707; 12-26-2010 at 11:02 AM.

12-26-2010, 06:19 PM	#3
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The first and second pics look like the harness connection for the automatic transmission... M/T guys just get used to ignoring them, but that's the only 4 pin connector in that area that I can think of. Check the wire colors in the TEWD to verify. The third pic does look like a connector for the TEMS option, but for not having been plugged in for 20 years, wow it does look clean... There should be a matching one on or near each strut tower. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

12-27-2010, 06:33 AM	#4
MrMK3-707 Stock Join Date: Dec 2010 Location: Fairfield CA Posts: 13	Thanks for the help. Just didnt want to leave anything unplugged that would stop the car for starting. Turns out that the ignition coil went bad because there was no spark comming from it when i turned the key. Lets hope the new one gets it to start Last edited by MrMK3-707; 12-28-2010 at 05:56 AM.

12-29-2010, 05:22 PM	#5
MA70-3.0GT 12psi boost Join Date: Oct 2009 Location: Crewe, England Posts: 356	Just a thought, did you reconnect the earth wire to the coil pack? Not sure if it's the same on N/A but on the turbo the coil pack has a seperate earth wire that needs to be hooked up (it was snapped on mine!) __________________ '89 MA70 Supra GT aero 3.0turbo JDM, Rebuilt motor, K&N intake, 3" stainless turbo-back. New turbo and braided line kit... '89 Honda NC27 400, NC23 cams, open pipe, PC36a shock & possibly Showa USD forks... '83 Yamaha 29R XJ750E-II, number 69 off the line, only runner in the country? Original except Koni shocks '95 Honda PC26 CB500R, Winter hack, hateful, trying to sell it I'm not paranoid, they really ARE after me!!! Last edited by MA70-3.0GT; 12-29-2010 at 05:24 PM.

12-31-2010, 07:49 PM	#7
MA70-3.0GT 12psi boost Join Date: Oct 2009 Location: Crewe, England Posts: 356	Could be a faulty igniter (the GE motor also uses this system) or a fault within the distributor/rotor arm... Hopefully this link will help with what to look at & where Mr. T has it hidden http://www.cygnusx1.net/Supra/Librar....aspx?S=IG&P=1 hth EDIT-: More specifically, this checklist should get you sorted http://www.cygnusx1.net/Supra/Librar...Section=IG&P=5 Follow that baby & you'll find the problem in next to no time __________________ '89 MA70 Supra GT aero 3.0turbo JDM, Rebuilt motor, K&N intake, 3" stainless turbo-back. New turbo and braided line kit... '89 Honda NC27 400, NC23 cams, open pipe, PC36a shock & possibly Showa USD forks... '83 Yamaha 29R XJ750E-II, number 69 off the line, only runner in the country? Original except Koni shocks '95 Honda PC26 CB500R, Winter hack, hateful, trying to sell it I'm not paranoid, they really ARE after me!!! Last edited by MA70-3.0GT; 12-31-2010 at 07:52 PM.

12-26-2010, 02:54 PM	#2
907mge 20psi boost Join Date: Dec 2009 Location: Harrisburg Posts: 759	I think what they are is the plugs for the actuators for the adjustable suspension that you don't have. I also have the same loose plugs. I'm guessing that toyota did not want to make too many different wiring harnesses so they made them all with these plugs.

01-01-2011, 02:33 AM	#8
MrMK3-707 Stock Join Date: Dec 2010 Location: Fairfield CA Posts: 13	Cant be the igniter either cuz i tested it on my friends MK3 and it works fine. Im gonna replace the distributor and see what happens next

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