SO STUMPED! starting problem, help pls..

btwilson86 · 05-07-2012, 01:23 PM

Well, I've read that the wiring colors are different between pre89 and 89+ CPS connectors. From what I read, how you have it wired right now is for pre89. I haven't yet found the correct wiring for 89+ CPS. Your first post says this is a 92 Supra turbo, can you tell me what color plugs your wiring harness has at the ignitor? That will tell us if you have a pre89 harness or 89+ (it's possible it was changed at some point, which could make wiring hell for this car)

btwilson86 · 05-07-2012, 07:33 PM

After much research (you're welcome) I have concluded that on a 92 Supra Turbo, you're wiring is correct:

Blue - Red
Red - Green
Yellow - Yellow
Black - White

I gathered this info from a couple of websites, but I would appreciate it if anyone with a post 89 Supra can verify that is how their wiring is connected.

So if your wiring is correct, and your mechanical timing is set, and your CPS is installed as described in the link above, have someone crank the car as you slowly turn the CPS. If you get it to fire, try to keep it running with some adjustments at the CPS. If that works and it runs at idle, let it warm up and set the ignition timing as described in the MKIII FAQ

DawgB0 · 05-07-2012, 10:35 PM

FML i think starter threw out on me, will only crank shortly then starter keep spinning til i let go the clutch.. Is that the sign of bad or starter having faulty?? sld i add a ground to block or chasis?

DawgB0 · 05-09-2012, 02:57 AM

i rebuild a starter from 2 of them in one now finally got it cranking lik new but wont fire even i have cps perfect?

DawgB0 · 05-09-2012, 06:55 PM

anyone? millions of thanks..

DawgB0 · 05-09-2012, 08:55 PM

now it can idle on its own finally i think from the intercooler raditor had a hole in it now i have code 31 sigh, everytime i fix one code another one alwayz appear!!

DawgB0 · 05-10-2012, 05:26 PM

this morning i tried to start it but wont stay idle!?

05-07-2012, 01:23 PM	#1
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	Well, I've read that the wiring colors are different between pre89 and 89+ CPS connectors. From what I read, how you have it wired right now is for pre89. I haven't yet found the correct wiring for 89+ CPS. Your first post says this is a 92 Supra turbo, can you tell me what color plugs your wiring harness has at the ignitor? That will tell us if you have a pre89 harness or 89+ (it's possible it was changed at some point, which could make wiring hell for this car) __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

05-07-2012, 07:33 PM	#2
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	After much research (you're welcome) I have concluded that on a 92 Supra Turbo, you're wiring is correct: Blue - Red Red - Green Yellow - Yellow Black - White I gathered this info from a couple of websites, but I would appreciate it if anyone with a post 89 Supra can verify that is how their wiring is connected. So if your wiring is correct, and your mechanical timing is set, and your CPS is installed as described in the link above, have someone crank the car as you slowly turn the CPS. If you get it to fire, try to keep it running with some adjustments at the CPS. If that works and it runs at idle, let it warm up and set the ignition timing as described in the MKIII FAQ __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

05-07-2012, 10:35 PM	#3
DawgB0 3" Exhaust Join Date: Mar 2012 Location: Hayward Posts: 84	FML i think starter threw out on me, will only crank shortly then starter keep spinning til i let go the clutch.. Is that the sign of bad or starter having faulty?? sld i add a ground to block or chasis? __________________ 92' 7mgte MT st8 bakcat

05-09-2012, 02:57 AM	#4
DawgB0 3" Exhaust Join Date: Mar 2012 Location: Hayward Posts: 84	i rebuild a starter from 2 of them in one now finally got it cranking lik new but wont fire even i have cps perfect? __________________ 92' 7mgte MT st8 bakcat

05-09-2012, 06:55 PM	#5
DawgB0 3" Exhaust Join Date: Mar 2012 Location: Hayward Posts: 84	anyone? millions of thanks.. __________________ 92' 7mgte MT st8 bakcat

05-09-2012, 08:55 PM	#6
DawgB0 3" Exhaust Join Date: Mar 2012 Location: Hayward Posts: 84	now it can idle on its own finally i think from the intercooler raditor had a hole in it now i have code 31 sigh, everytime i fix one code another one alwayz appear!! __________________ 92' 7mgte MT st8 bakcat

05-10-2012, 05:26 PM	#7
DawgB0 3" Exhaust Join Date: Mar 2012 Location: Hayward Posts: 84	this morning i tried to start it but wont stay idle!? __________________ 92' 7mgte MT st8 bakcat

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