Fuel pump.. i think.

AbsoluteSpeed · 08-20-2007, 05:14 AM

It was towed home still has 3/4 of a tank and the fuel filter should have been changed a week ago when I got it tuned up, but they forgot to do my oil change so who knows.

redmaro · 08-20-2007, 05:36 AM

Turn the ignition switch on (dont start engine), remove the fuel filler neck cap and push the small trap door, with a pencil or something. Put you ear close to mouth of the fuel filler neck. Have someone bridege terminals +B and Fp on the diagnostic port you should hear a whirring sound as the pump is powered up. If you hear the whine its working if you dont you should check the following:

*EFI fuse 15-amp
*Ignition 7.5-amp fuse or main EFI relay(located in the fuse panel next to battery)
*Fuel Pump
*wiring and electrical connectors

Theres other tests you can perform, but I would do this one first its easier^^

http://www.cygnusx1.net/Supra/Librar....aspx?S=FI&P=1

redmaro · 08-20-2007, 05:37 AM

Hope this helps, try it its real easy.

Check your codes also.

These are the terminals you should bridge on the first pic. VV

AbsoluteSpeed · 08-20-2007, 02:11 PM

Ill try that this morning and see what happens.

AbsoluteSpeed · 08-20-2007, 05:31 PM

Tested the fuel pump it sounds fine so it’s on to possible electrical problems.

redmaro · 08-20-2007, 10:08 PM

Have you done diagnostic?

AbsoluteSpeed · 08-21-2007, 05:05 AM

That is being done on wednseday

08-20-2007, 05:14 AM	#1
AbsoluteSpeed Intake Join Date: Jul 2007 Location: Edmonton AB Canada Posts: 44	It was towed home still has 3/4 of a tank and the fuel filter should have been changed a week ago when I got it tuned up, but they forgot to do my oil change so who knows. __________________ 1987 Supra 7m-gte

08-20-2007, 05:36 AM	#2
redmaro walbro fp Join Date: Mar 2006 Location: arizona Posts: 432	Turn the ignition switch on (dont start engine), remove the fuel filler neck cap and push the small trap door, with a pencil or something. Put you ear close to mouth of the fuel filler neck. Have someone bridege terminals +B and Fp on the diagnostic port you should hear a whirring sound as the pump is powered up. If you hear the whine its working if you dont you should check the following: EFI fuse 15-amp Ignition 7.5-amp fuse or main EFI relay(located in the fuse panel next to battery) Fuel Pump wiring and electrical connectors Theres other tests you can perform, but I would do this one first its easier^^ http://www.cygnusx1.net/Supra/Librar....aspx?S=FI&P=1 __________________ MK3, Auto, Turbo.

08-20-2007, 05:37 AM	#3
redmaro walbro fp Join Date: Mar 2006 Location: arizona Posts: 432	Hope this helps, try it its real easy. Check your codes also. These are the terminals you should bridge on the first pic. VV __________________ MK3, Auto, Turbo. Last edited by redmaro; 08-20-2007 at 05:44 AM.

08-20-2007, 02:11 PM	#4
AbsoluteSpeed Intake Join Date: Jul 2007 Location: Edmonton AB Canada Posts: 44	Ill try that this morning and see what happens. __________________ 1987 Supra 7m-gte

08-20-2007, 05:31 PM	#5
AbsoluteSpeed Intake Join Date: Jul 2007 Location: Edmonton AB Canada Posts: 44	Tested the fuel pump it sounds fine so it’s on to possible electrical problems. __________________ 1987 Supra 7m-gte

08-20-2007, 10:08 PM	#6
redmaro walbro fp Join Date: Mar 2006 Location: arizona Posts: 432	Have you done diagnostic? __________________ MK3, Auto, Turbo.

08-21-2007, 05:05 AM	#7
AbsoluteSpeed Intake Join Date: Jul 2007 Location: Edmonton AB Canada Posts: 44	That is being done on wednseday __________________ 1987 Supra 7m-gte

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