Fue L Pump ?????
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Joined: Jul 2006
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From: Lockport, NY
Originally Posted by yh731801
1988 F-150, 4.9 It won't run unless I use the jimper on the test plug, I'm now driving it with the jumper.
Fleet Owner
Joined: Aug 2005
Posts: 23,667
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From: Easton,Ks
Originally Posted by ameritaz3038
curious where this test plug is as it may help me trouble shoot my front pump on a (info below) , if i understand right the relay is for both front and back.
Yes the relay is for both the front and rear pumps.
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cold iy be a weak fuel pump ? I can't hear the high pressure pump -I have to lay my hand on it to know it is running
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Fleet Owner
Joined: Aug 2005
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From: Easton,Ks
Originally Posted by yh731801
cold iy be a weak fuel pump ? I can't hear the high pressure pump -I have to lay my hand on it to know it is running
Not saying you might not have a bad pump but you need to get the fuel pump relay working right first.
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