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06-02-2011, 11:58 PM
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#1 |
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Stock
Join Date: May 2011
Location: St. Clair, Mo
Posts: 16
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It ended up being the battery not having enough juice. But now it will crank and fire but not run. Can u help me with this?
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06-03-2011, 12:52 AM
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#2 |
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walbro fp
Join Date: Dec 2010
Location: spokane
Posts: 479
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sounds like the circuit opening relay for the fuel pump.
when you turn the key to the on position, the fuel pump runs for a few seconds to prime the lines and fuel rail, then stops. that supplies enough fuel to get the engine to fire and once the VAFM starts seeing a signal that air is coming in, the fuel pump receives power again and begins pumping until that signal ceases. check that and see if its hooked up. if so and operating properly, then id look at your VAFM/KVAFM
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87 toyota 4x4 single cab short box pickup, 7MGZE. |
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06-03-2011, 01:07 AM
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#3 |
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Stock
Join Date: May 2011
Location: St. Clair, Mo
Posts: 16
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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 |
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06-03-2011, 01:26 AM
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#4 |
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walbro fp
Join Date: Dec 2010
Location: spokane
Posts: 479
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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.
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87 toyota 4x4 single cab short box pickup, 7MGZE. Last edited by 87hilux7mge; 06-03-2011 at 01:28 AM. |
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06-03-2011, 02:26 AM
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#5 |
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Stock
Join Date: May 2011
Location: St. Clair, Mo
Posts: 16
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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.
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06-03-2011, 03:14 AM
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#6 |
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walbro fp
Join Date: Dec 2010
Location: spokane
Posts: 479
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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.
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87 toyota 4x4 single cab short box pickup, 7MGZE. |
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06-04-2011, 11:19 PM
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#7 |
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Stock
Join Date: May 2011
Location: St. Clair, Mo
Posts: 16
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Do I need to pull the dash to get to the circuit opening relay??
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06-05-2011, 02:04 AM
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#8 | |
 Toyota Racing Development Join Date: Apr 2007
Posts: 5,038
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Quote:
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.
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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 --->  |
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06-03-2011, 03:12 AM
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#9 | |
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3" Exhaust
Join Date: Feb 2010
Location: Chicago
Posts: 240
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Quote:
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