Manual Fuel pump switch, and tips |
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Manual Fuel pump switch, and tips |
ONTHEGRIND |
Nov 22 2008, 01:20 PM
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#21
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Member Group: Members Posts: 286 Joined: 10-November 08 From: California Member No.: 9,738 Region Association: None |
so I am installing a new bosch fuel pump for my factory fuel injection system.. Where my factory fuel pump used to one in the stock location, one of the mounting tabs is gone from a little bit of rust, so I am moving it to the firewall. And mounting it with sheet metal screws.. Any body have a manual fuel pump switch wired up so if that relay crap decides not to work I can just flip it on with a switch.. where do you have it mounted and how do you have it wired up ?
Thanks |
Spoke |
Nov 22 2008, 06:07 PM
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#22
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Jerry Group: Members Posts: 6,989 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
Most folks don't do a manual switch because it is inherently dangerous to have high pressure FI pump on at all times. If you have an accident and fuel lines damaged, a constant on FI pump could pump out a lot of gas.
Why did you put the new pump on? Was the old pump working or leaking? Did you try connecting a wire from ground to the fuel pump enable wire on connector T4b? If the pump runs with the key on, then the problem is with the FI brain. With the key on, this will test to see if the relays turn on. With the key on, you should hear a click of the fuel pump relay. Likewise, have someone turn the key on and check the power supply relay clicks. |
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