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jwruss

April 8th, 2013 9:01 PM

How to disable fuel pump 07 NBS

I need to know if it is possible to disable the fuel pump in a 2007 NBS with a 5.3 AFM. I have already pulled the fuel pump fuse and relay, truck still runs and has correct fuel pressure.

country_09

April 9th, 2013 11:41 AM

Only way I know of it to unplug the fuel pump itself if the others don't work

in2pro

April 9th, 2013 4:27 PM

Quote:

Originally Posted by jwruss (Post 245480)

I need to know if it is possible to disable the fuel pump in a 2007 NBS with a 5.3 AFM. I have already pulled the fuel pump fuse and relay, truck still runs and has correct fuel pressure.

But is the fuel pump still running...if so you didn't pull the right fuses and relays.. There can be enough fuel in the line to keep the vehicle running for several minutes at idle if the pump is off...try revving the engine once the fuse is pulled...

jwruss

April 11th, 2013 12:30 PM

Yes I pulled the right fuses and relay. Had a pressure guage on the line at the time. Found out thru Alldata that the oil pressure switch also has to be unpluged.

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