Gen 1: 2004-2005 Fuel pump not working ?? help - Kawasaki ZX-10R.net
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post #1 of 34 Old 05-18-2011, 06:03 PM Thread Starter
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Fuel pump not working ?? help

Any advice welcome. 2004 ZX10r Ignition on, bike turns over, power to coils, no power from white/red stripe wire that comes from fuel pump relay. Fuel pump relay will turn on fuel pump if brown/yellow stripe wire that comes from ecu, pin #58 is grounded. Have changed out the ecu with a different one with the same results. Any ideas on what can stop the ecu from
grounding the fuel pump relay.
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post #2 of 34 Old 05-18-2011, 06:57 PM
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Add your own relay to the fuel pump and call it a day...

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post #3 of 34 Old 05-18-2011, 07:16 PM
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Could be faulty clutch or kickstand switch. Have you checked those?

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post #4 of 34 Old 05-18-2011, 07:25 PM Thread Starter
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The fuel pump was not on all the time as it would be if I ran it through a remote relay.
Both clutch and side stand switches work as they should. Thanks
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post #5 of 34 Old 05-18-2011, 07:31 PM
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I'm guessing you still have key and ignition correct? That could also be culprit. I believe the ECU verifies three different sources to ground fuel pump relay. Clutch, sidestand, and ignition switch. Kinda odd that ECU won't ground relay with all three working properly. Especially on a second ECU. Are you checking grounds with kickstand up and clutch switch engaged?

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post #6 of 34 Old 05-18-2011, 07:39 PM Thread Starter
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Yes have key and ignition and yes to side stand and clutch.
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post #7 of 34 Old 05-19-2011, 09:01 PM
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Weird one possibility of a loose pin or a bad contact somewhere?

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post #8 of 34 Old 05-20-2011, 10:35 AM Thread Starter
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Thanks all for help Turned out it was the grey wire from the ignition switch to ecu that sends a reduced voltage when ign turned on. No voltage no fuel pump.
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post #9 of 34 Old 07-31-2011, 12:47 PM
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Quote:
Originally Posted by Z1R View Post
Thanks all for help Turned out it was the grey wire from the ignition switch to ecu that sends a reduced voltage when ign turned on. No voltage no fuel pump.

Did you find out why ?

I'm having problem with the fuel pump too !

Sometimes it just won't start up, then I push the cables under the seat om the left side and it goes back on , mostly when It's warm....

Skort circuit mabybe ?

Did I say I've got a white one? Erhm I've got a white one but still, kind of miss my green one!
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post #10 of 34 Old 08-01-2011, 02:10 AM
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Quote:
Sometimes it just won't start up, then I push the cables under the seat om the left side and it goes back on , mostly when It's warm....
does it happen when you ride?
cause it happens to me where the motor just shuts down..
when i turn the key OFF and ON again..i cannot hear the pump noise..and it wont fire up.

Quote:
Thanks all for help Turned out it was the grey wire from the ignition switch to ecu that sends a reduced voltage when ign turned on. No voltage no fuel pump.
how do you check this? what is your voltage reading? How do you fix it?
Thanks.

Last edited by gilos; 08-01-2011 at 02:13 AM.
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