New fuel pump not turning on..help!!
12-09-2011, 09:08 PM
#1
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New fuel pump not turning on..help!!
So I just put in a new fuel pump but when I put the key in the ignition turn it to on the fuel pump dosent go on....now I tested to see if the fuel pump works while it's connected to the harraness by using a car battery and some wire and plugging the wires into the plug then the fuel pump turns on so it's not the fuel pump and I don't know what it could be...can anyone help?!?....also I put in new fuel injectors and had to put in new connectors for the injectors could it be the plugs wiring are backwards?!?
12-09-2011, 10:40 PM
#2
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Best thing one can do is buy a service manual, and take a look at the wiring diagrams, you can then do the necessary troubleshooting tests. I would suspect a relay problem, or wiring harness problems.
What are you working on anyway? if it's a Honda, probably main relay issues.
What are you working on anyway? if it's a Honda, probably main relay issues.
12-09-2011, 11:10 PM
#4
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Also I test the plug where it connects to the fuel pump and there is no 12v power coming out of it tested with a wire by putting the wire on the negative terminal of the plug and touching the positive and there was no spark coming out of it
12-10-2011, 08:52 PM
#5
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You don't own a multimeter do you? and your building a turbo car? have you checked your fuses? The main relay also is controlled by a time delay, key on, pump runs momentarily, than it turns off, you can hear 2 clicks of the relay when you turn the key on, one for pump on, then pump off, it turns back on once you crank.
12-11-2011, 08:44 PM
#8
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if you spark the wires to test for voltage, you will blow fuses
go to your local harbor freight, or go here http://www.harborfreight.com/7-funct...ter-90899.html
set it to dc volts. without a multimeter of some sort, tracking down voltage/wiring issues, you might as well cut all the wires and put them back together with wire nuts
go to your local harbor freight, or go here http://www.harborfreight.com/7-funct...ter-90899.html
set it to dc volts. without a multimeter of some sort, tracking down voltage/wiring issues, you might as well cut all the wires and put them back together with wire nuts
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