Hello all,
I hope someone here can help me I am in a bind. I have a 5.3 swapped 95 Silverado. I reworked my harness according to lt1swap.com and made my own fuse/relay box following the direction of the website. I seem to be having likely a voltage issue that I need to diagnose. (Side note; the website said that the wires that came with the kits he linked to should not be used as they aren't designed for the application but I didn't replace them... thinking they should suffice.)
When I turn the key to auxiliary position the ECM is supposed to send voltage to the fuel pump for 2 seconds. When I took a test light to the relay it merely blipped for a split second. I have several harness grounds and the ground for the fuse/relay box tied into the bracket that holds the alternator. Does anyone know if the fuse/relay box needs a dedicated ground or if perhaps by not using a different wiring that the fuse/relay box is not going to receive enough voltage to work properly? I am stumped.
If I crank on it for a good 30 seconds I will have fuel up to the fuel regulator but it does not seem to cross over to the relief valve on the rail, that or it doesn't hold pressure... when I push the pin in it there is no fuel there. I'm thinking this is just because of the continued crank that brings fuel up but doesn't hold the pressure without proper voltage?
I know this is a little obtuse but some direction would be greatly appreciated. Can someone who has reworked their harness/built a fuse/relay box following lt1swaps guide please chime in? I have an outdated multi-meter which makes diagnosis difficult for me.
Another note: this is just after I had deleted the VATS and Column Lock Security from the tune and changed nothing else. Before I did this it would fire for a split second and then die because of the VATS... would the Column Lock delete keep from fuel delivery?
I really would like to get this thing to move forward and backwards at least before snow falls in a month or so, sorry for the long query. Please someone help me.
(I will try to supply some photos when I get home to help illustrate.)
I hope someone here can help me I am in a bind. I have a 5.3 swapped 95 Silverado. I reworked my harness according to lt1swap.com and made my own fuse/relay box following the direction of the website. I seem to be having likely a voltage issue that I need to diagnose. (Side note; the website said that the wires that came with the kits he linked to should not be used as they aren't designed for the application but I didn't replace them... thinking they should suffice.)
When I turn the key to auxiliary position the ECM is supposed to send voltage to the fuel pump for 2 seconds. When I took a test light to the relay it merely blipped for a split second. I have several harness grounds and the ground for the fuse/relay box tied into the bracket that holds the alternator. Does anyone know if the fuse/relay box needs a dedicated ground or if perhaps by not using a different wiring that the fuse/relay box is not going to receive enough voltage to work properly? I am stumped.
If I crank on it for a good 30 seconds I will have fuel up to the fuel regulator but it does not seem to cross over to the relief valve on the rail, that or it doesn't hold pressure... when I push the pin in it there is no fuel there. I'm thinking this is just because of the continued crank that brings fuel up but doesn't hold the pressure without proper voltage?
I know this is a little obtuse but some direction would be greatly appreciated. Can someone who has reworked their harness/built a fuse/relay box following lt1swaps guide please chime in? I have an outdated multi-meter which makes diagnosis difficult for me.
Another note: this is just after I had deleted the VATS and Column Lock Security from the tune and changed nothing else. Before I did this it would fire for a split second and then die because of the VATS... would the Column Lock delete keep from fuel delivery?
I really would like to get this thing to move forward and backwards at least before snow falls in a month or so, sorry for the long query. Please someone help me.
(I will try to supply some photos when I get home to help illustrate.)