external fuel pump
Thread Starter
Instructor
Joined: Dec 2002
Posts: 115
Likes: 0
From: pinehurst nc
external fuel pump
Have an 84 that I am trying to fix a butchered carb conversion on. It came with a holley external electric fuel pump wired directly to the battery with a toggle switch. Can I fix this by hooking the pump up to the existing fuel pump relay or will the elimination of the cross fire injection cause the ECM to not activate the relay?
Or would I be better off just using an after market relay wired to an ignition source? I would like to keep the wiring down to a minimum and use the existing relay if possible.
Or would I be better off just using an after market relay wired to an ignition source? I would like to keep the wiring down to a minimum and use the existing relay if possible.
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Is the computer still in the car?
If so you can use original pump relay as the ECM doesn't know the CFI is gone.
If you want to run a aftermarket relay ,all the old pollution wiring feeds (pink / black ) are 12V with the key on to save having to run another switched supply to the relay.
If so you can use original pump relay as the ECM doesn't know the CFI is gone.
If you want to run a aftermarket relay ,all the old pollution wiring feeds (pink / black ) are 12V with the key on to save having to run another switched supply to the relay.
