Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

1999 EM1 fuel pump wont prime

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Old Mar 8, 2015 | 06:45 AM
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Default 1999 EM1 fuel pump wont prime

i have a problem my fuel pump wont prime, relay is working as it should, all fuses are fine, it started one day i was driving an ran out of fuel, since then its started once or twice since then but cuts out after a min, now i cant get it to start atal? ive tried a friends pump also and no go? any ideas? thanks in advance
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Old Mar 8, 2015 | 11:38 AM
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Default Re: 1999 EM1 fuel pump wont prime

Does the pump run if, in the main relay connector, you jump voltage from the fuse 44 or 13 terminal to the fuel pump terminal?
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Old Mar 8, 2015 | 01:48 PM
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Default Re: 1999 EM1 fuel pump wont prime

where is fuse 44 located?? i ran a wire from battery straght to pump with a fuse and switch for temporary use, so that means the pump itself is fine? relay clicks as it should.. im baffled
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Old Mar 8, 2015 | 01:51 PM
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Default Re: 1999 EM1 fuel pump wont prime

Originally Posted by SPUNKYMUNKY
where is fuse 44 located?? i ran a wire from battery straght to pump with a fuse and switch for temporary use, so that means the pump itself is fine? relay clicks as it should.. im baffled
See FAQs sticky for fuse box diagrams.

Then do the tests I suggested.
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Old Mar 27, 2015 | 06:10 AM
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Default Re: 1999 EM1 fuel pump wont prime

changed fuel pump, and resoldered main relay no difference
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Old Mar 27, 2015 | 06:22 AM
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Default Re: 1999 EM1 fuel pump wont prime

Pay a mechanic to fix your car. You'll spend less money in the long run because replacing parts aimlessly rather than diagnosing will get expensive.
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Old Mar 27, 2015 | 07:38 AM
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Default Re: 1999 EM1 fuel pump wont prime

Originally Posted by SPUNKYMUNKY
changed fuel pump, and resoldered main relay no difference
You verified that the pump works by manually powering the pump, why replace it. Your issue could be a wiring from the fusebox or the mainrelay to the pump, or the main relay isn't receiving a signal from the ecu. Troubleshooting is the only way.
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Old Mar 27, 2015 | 07:43 AM
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Default Re: 1999 EM1 fuel pump wont prime

I had a good one spare i just said id try anyways, so what do you mean will i run wire from pump to the fuse 13, then see does it prime itself or what? i cant afford to bring to mechanic unfortunately
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Old Mar 27, 2015 | 08:04 AM
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So you have a multimeter?
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Old Mar 27, 2015 | 08:07 AM
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Default Re: 1999 EM1 fuel pump wont prime

no unfortunately someone stole it :/ i must try get another
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Old Mar 27, 2015 | 08:14 AM
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Default Re: 1999 EM1 fuel pump wont prime

Suggest now would be a good time to buy one.
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Old Mar 27, 2015 | 03:58 PM
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Default Re: 1999 EM1 fuel pump wont prime

You can get a free dvom at harbor freight. Get one and learn how to diagnose your car.

You can download the Honda service manual online and have access to factory diagnosis charts.

This is from Ron's photobucket page -http://s639.photobucket.com/user/RonJ_HT/media/picture_5582.jpg.html

Last edited by joey1320; Mar 27, 2015 at 04:15 PM.
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