NEEd HELp

chuck0960 · 06-03-2011, 01:07 AM

Could u point me in any direction of where that circuit is located?
And could the KVAFM be why it will crank but not start up???
Patience is a virtue but man this starting to suck

87hilux7mge · 06-03-2011, 01:26 AM

http://www.cygnusx1.net/Supra/Librar...px?S=Main&P=22

the KVAFM is a possibility, but ive heard of ppl start and run their cars without this even hooked up.

id say its the COR, or the fuel pump relay. u should be able to find both in the TSRM link above.

chuck0960 · 06-03-2011, 02:26 AM

ok. ill have to check that. thanks a lot. i have another question...the clips that go to the fuel injectors are white/grey and orange. does anybody know the order they should go from front to back?? i have a feeling these might be wrong but the clips can pretty much only reach a certain injector.

87hilux7mge · 06-03-2011, 03:14 AM

if u unclip anything on the harness u should always tag both ends so you know where they went.

if they can only reach one injector (usually this is how the harnesses work on these motors, not guaranteed) then i would assume thats how they attach.

ive never seen different color injector clips on these motors, ive only seen green and yellow.

chuck0960 · 06-04-2011, 11:19 PM

Do I need to pull the dash to get to the circuit opening relay??

87hilux7mge · 06-05-2011, 01:02 AM

it should be under the kick panel, down by your feet. i wouldnt think youd have to pull the dash to get to it.

El Supracabras · 06-05-2011, 02:03 PM

If you are absolutely sure that the timing is correct (I would double check it, especially the cps, which is easy to kcuf up if you have never done it before) and the everything is grounded sufficiently, move on.
Next I would check the fuel pressure (using a gauge!) before checking any of the related wiring or relays or whatever. The car will NOT start if the pressure is below what is required even if you can hear the pump running. If the pressure at the rail is good, this is not the problem, move on. Do you have good (or any) spark...........

cre · 06-05-2011, 02:04 AM

Quote:

Originally Posted by 87hilux7mge

if u unclip anything on the harness u should always tag both ends so you know where they went.

if they can only reach one injector (usually this is how the harnesses work on these motors, not guaranteed) then i would assume thats how they attach.

ive never seen different color injector clips on these motors, ive only seen green and yellow.

A few of the injector wires (#1 and #2 for example will reach either injector. The injector clips (the wire harness side connectors) typically alternate white / brown / white / brown and so on. The first is white, IIRC, double check in the TEWD by looking at the wire colors running to the two clips.

The injector CAPS are what you're thinking of... pre89 N/A yellow top (low impedance injectors); 89+ N/A green top (high impedance; all years 7M-GTE black (low impedance).

90% of the time the problem with a rebuild not starting is timing related; 7% it's a missed ground; the last 3% varies.

chuck0960 · 06-05-2011, 01:20 PM

I'm pretty sure I have all the grounds. The one on the exhaust side towards the back of the head, the coil pack ground, and the huge one under the intake.
And the timing issue, I put the crank tdc and marked my cams and cps and put them back in the same.

87hilux7mge · 06-05-2011, 10:25 PM

Quote:

Originally Posted by cre

A few of the injector wires (#1 and #2 for example will reach either injector. The injector clips (the wire harness side connectors) typically alternate white / brown / white / brown and so on. The first is white, IIRC, double check in the TEWD by looking at the wire colors running to the two clips.

The injector CAPS are what you're thinking of... pre89 N/A yellow top (low impedance injectors); 89+ N/A green top (high impedance; all years 7M-GTE black (low impedance).

90% of the time the problem with a rebuild not starting is timing related; 7% it's a missed ground; the last 3% varies.

true, just went and looked at my buddies. never noticed the clip colors were different colors. i think im going color blind haha, they looked the same color as the injectors when i took both my motors apart

06-03-2011, 03:14 AM	#4
87hilux7mge walbro fp Join Date: Dec 2010 Location: spokane Posts: 479	if u unclip anything on the harness u should always tag both ends so you know where they went. if they can only reach one injector (usually this is how the harnesses work on these motors, not guaranteed) then i would assume thats how they attach. ive never seen different color injector clips on these motors, ive only seen green and yellow. __________________ 87 toyota 4x4 single cab short box pickup, 7MGZE.

06-05-2011, 01:02 AM	#6
87hilux7mge walbro fp Join Date: Dec 2010 Location: spokane Posts: 479	it should be under the kick panel, down by your feet. i wouldnt think youd have to pull the dash to get to it. __________________ 87 toyota 4x4 single cab short box pickup, 7MGZE.

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06-03-2011, 01:07 AM	#1
chuck0960 Stock Join Date: May 2011 Location: St. Clair, Mo Posts: 16	Could u point me in any direction of where that circuit is located? And could the KVAFM be why it will crank but not start up??? Patience is a virtue but man this starting to suck

06-03-2011, 01:26 AM	#2
87hilux7mge walbro fp Join Date: Dec 2010 Location: spokane Posts: 479	http://www.cygnusx1.net/Supra/Librar...px?S=Main&P=22 the KVAFM is a possibility, but ive heard of ppl start and run their cars without this even hooked up. id say its the COR, or the fuel pump relay. u should be able to find both in the TSRM link above. __________________ 87 toyota 4x4 single cab short box pickup, 7MGZE. Last edited by 87hilux7mge; 06-03-2011 at 01:28 AM.

06-03-2011, 02:26 AM	#3
chuck0960 Stock Join Date: May 2011 Location: St. Clair, Mo Posts: 16	ok. ill have to check that. thanks a lot. i have another question...the clips that go to the fuel injectors are white/grey and orange. does anybody know the order they should go from front to back?? i have a feeling these might be wrong but the clips can pretty much only reach a certain injector.

06-04-2011, 11:19 PM	#5
chuck0960 Stock Join Date: May 2011 Location: St. Clair, Mo Posts: 16	Do I need to pull the dash to get to the circuit opening relay??

06-05-2011, 02:03 PM	#7
El Supracabras 3" Exhaust Join Date: Feb 2010 Location: Chicago Posts: 240	If you are absolutely sure that the timing is correct (I would double check it, especially the cps, which is easy to kcuf up if you have never done it before) and the everything is grounded sufficiently, move on. Next I would check the fuel pressure (using a gauge!) before checking any of the related wiring or relays or whatever. The car will NOT start if the pressure is below what is required even if you can hear the pump running. If the pressure at the rail is good, this is not the problem, move on. Do you have good (or any) spark...........

06-05-2011, 01:20 PM	#9
chuck0960 Stock Join Date: May 2011 Location: St. Clair, Mo Posts: 16	I'm pretty sure I have all the grounds. The one on the exhaust side towards the back of the head, the coil pack ground, and the huge one under the intake. And the timing issue, I put the crank tdc and marked my cams and cps and put them back in the same.