Fuse blowing out on lethal fuel system

[tnkucan]

My fuel pump fuse blows out when I put my car under load any idea what could be going on ?

 

[tnkucan]

Return style wiring harness

 

[Derek@Lethal]

Double check over your wiring to be sure that you have no shorts and that all connections are good. Loose connections/grounds can cause resistance issues that are easily fixed. Make sure none of the wire insulation is broken and exposed wires are not touching metal.

 

[tnkucan]

Yes when through all the wiring cleaned the grounded area ,would a bad pump or relay blow the fuse ?

 

[Derek@Lethal]

I'm not 100% sure on a relay causing a blown fuse, but if a pump is going bad it can depending on how it's going bad. If there's a short in the pump or it's not able to spin freely (causing excessive current draw) then those can cause a fuse to blow. I would first check resistance of the relays using an Ohm meter and then do the same to the pumps, or check to see how much current the pumps are drawing while running.

 

[tnkucan]

Now what it's doing is that when I put the ignition on the on position it blows the fuse it won't let me do any testing

 

[Derek@Lethal]

Disconnect the pumps from the harness and try again, see if the fuse blows instantly again. Report back.

 

[tnkucan]

Disconnected the pumps and it did not blow hooked the pumps back up and it blew

 

[Derek@Lethal]

You have a short somewhere around the pump or it's the pump itself. Are you using a stock pump hat or a DivisionX or similar?

 

[tnkucan]

Division x , I checked all the wiring to the pumps and they all look fine

 

[Derek@Lethal]

Which pumps are you using?

 

[tnkucan]

Welbro 400

 

[Derek@Lethal]

Ernest,

Good talking to you and glad we could get you taken care of. If you need anything else, just give us a call.

Thanks.