 Fuel pump shorting out, help me find the short |
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| pgeorgeson |
 Nov 23 2011, 04:24 PM
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Newbie  Group: Members Posts: 22 Joined: 23-October 11 From: Reno, NV Member No.: 13,710 Region Association: None  |
The good news: I got the fuel pump working.
The bad news: It keeps blowing the fuse. I am fairly certain that the pump not the problem. I think I have a short. I have checked the fuse panel and cleaned up all the contacts there. The main harness looks fine as it goes into the tunnel and comes out of the tunnel in the engine compartment. I have checked the wires coming off the main harness to the pump. The plug to the pump looks fine. From what I can see of it, the wires also look good behind the dash. I am thinking the short may be in the tunnel. Any specific ideas of where I should look for a short that I haven't looked for already? If it is the tunnel, is there any way to check for a short in there other than pulling the entire harness out? |
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| ejm |
Nov 23 2011, 04:55 PM
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I can see the light at the end of the tunnel Group: Members Posts: 2,707 Joined: 3-February 03 From: Massachusetts Member No.: 224 Region Association: None |
Assuming you are running stock fuel injection I would check the wiring to the auxiliary air regulator which is also powered by the fuel pump circuit. If the wiring looks good unplug the AAR and see if the short goes away.
A stock '74 would have the pump in the back and none of the associated wiring goes thru the tunnel. If the pump has been moved up front anything is possible. |
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Posts in this topic
pgeorgeson Fuel pump shorting out Nov 23 2011, 04:24 PM
pgeorgeson
Assuming you are running stock fuel injection I w... Nov 23 2011, 05:12 PM
Cap'n Krusty You are, indeed, wrong. The pump wiring comes fro... Nov 23 2011, 05:48 PM pgeorgeson
You are, indeed, wrong. The pump wiring comes fr... Nov 23 2011, 05:50 PM underthetire Doesn't the blower motor fan run off that fuse... Nov 23 2011, 07:12 PM vsg914 I agree with ejm. Aar cinnection is shorting again... Nov 23 2011, 07:28 PM pgeorgeson So the AAR was unplugged and the white wire was re... Nov 27 2011, 10:31 PM Dr Evil As someone mentioned, the blower motor also get po... Nov 27 2011, 10:40 PM pgeorgeson Blower (on front ride side of engine compartment) ... Nov 27 2011, 10:55 PM underthetire
Blower (on front ride side of engine compartment)... Nov 27 2011, 11:13 PM pgeorgeson I made sure the red lever was all the way down, bu... Nov 27 2011, 11:39 PM SUNAB914 Pull the heater knob control and clean the ground,... Nov 28 2011, 11:22 AM 914_teener
Pull the heater knob control and clean the ground... Nov 28 2011, 07:22 PM pgeorgeson
Pull the heater knob control and clean the ground... Dec 1 2011, 12:03 AM Dave_Darling The switch grounds the wire that goes to it. That... Dec 1 2011, 12:15 AM |
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