New fuel pump not working, 94 1500 esp


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Kerry n Cali
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New fuel pump not working, 94 1500 esp

Post by Kerry n Cali » Thu Jul 05, 2018 6:37 pm



I just bought a OEM fuel pump for $297. I assumed the old one just quit because a very limited amount of fuel was making it to the filter.

After replacing the pump, I figured I had this thing fix and was ready ride this long weekend... not so :cry:

It seems there's no power getting to the pump. When the ignition is turned on, there's no vacuum sound. I checked the fuses, at least the box on the left lower side, all good.

So I guess I'm not recieveing power to the pump.

Any suggestions? In need, thank you



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virgilmobile
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Re: New fuel pump not working, 94 1500 esp

Post by virgilmobile » Thu Jul 05, 2018 7:32 pm

I'd first use a test light where the electric goes into the tank and see if there's volts there.

DaveO430
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Re: New fuel pump not working, 94 1500 esp

Post by DaveO430 » Fri Jul 06, 2018 9:03 am

There will not be any power to the pump unless the engine is turning and the ignition system is working.

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terryt
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Re: New fuel pump not working, 94 1500 esp

Post by terryt » Fri Jul 06, 2018 10:13 am

The fuel pump only powers up when you press the starter button on later models.

To test disconnect the wire to the pump and run a 12volt feed from the battery

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Charlie1Horse
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1992 GL1500I Interstate

Re: New fuel pump not working, 94 1500 esp

Post by Charlie1Horse » Fri Jul 06, 2018 11:11 pm

Does your cruise indicator light up? On my 92 Interstate the two screw connectors under the kill switch were loose and there was no power to the ECU or the fuel pump. I have read that the cruise indicator will illuminate if the connectors are tight (Interstate doesn't have cruise). You might check these connectors. Years and miles of vibration will cause these connectors to loosen and then you will have no spark or fuel pump if it is the same as my Interstate.
Russell

Those who say it cannot be done should try not to interrupt those who are doing it.

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Bluewaterhooker0
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Re: New fuel pump not working, 94 1500 esp

Post by Bluewaterhooker0 » Fri Jul 06, 2018 11:22 pm

The responses above should be correct. On the earlier 88 and 89 models, the fuel pump would cycle via a relay when the ignition was first turned on. On the 90 - 2000 models, the pump is powered by the ECU, and will not feed power to the pump until the start button is pressed and the ECU senses the ignition is firing while turning over. That might be rather difficult to hear with the engine noise. Best to test it with a volt meter while trying to start the bike. I believe it is only a temporary voltage supply, until the bike actually starts. Then power is constant.

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bluthundr31
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Re: New fuel pump not working, 94 1500 esp

Post by bluthundr31 » Tue Jul 10, 2018 2:31 pm

Your opening comment said that the "old" pump gave a "limited" amount of fuel. Did you measure the amount and compare it to the "normal" amount? There is an easy method to check, jumper the FP to power for 15 sec's and multiply the amount collected in a beaker, by four to get GPM's. They don't need to put out a lot of fuel, just enough to keep the carbs full. Could the "output" hose to the fuel filter be "gunked" up/clogged up with tank sediment or something else? Could the "strainer" on the original FP be clogged?

What prompted you to check the fuel pump output to begin with?

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Kerry n Cali
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Re: New fuel pump not working, 94 1500 esp

Post by Kerry n Cali » Thu Jul 12, 2018 10:39 pm

UPDATE;
IT SEEMS THE SHOP I CHOSE TO "FIX" MY FUEL PUMP ISSUE NOW SAYS IT "MIGHT BE" THE PULSE COIL/GENERATOR. SO, MY GIRL HAS BEEN IN THIS SHOP FOR THREE DAYS BEING WORKED ON FOR APPROX 4 HR A DAY,AT A COST OF $85 PER/MO.... I'M SCREWED.
THE SHOP MECH. SAID HE THINKS THIS MIGHT BE THE PROBLEM... HE THINKS.... AT $85 PER/HR "HE THINKS" UGH!!!! AND YES GUYS, I TOOK OFF ALL THE BODY PARTS TO CUT COST.

I SPOKE TO A LONG DISTANCE FRIEND WHO DID SAY THAT IF THE PULSE COIL OR GENERATOR IS BAD, IT WONT SEND OUT SPARK AND THE COMPUTER WONT ALLOW THE FUEL PUMP TO WORK...

ALL I KNOW IS I LOVE THIS BIKE. MY SON AND I TOTALLY REFRIBED IT IN THE 3 MONTHS PRYOR TO HIM SERVING IN OUR NAVY.

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bluthundr31
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Re: New fuel pump not working, 94 1500 esp

Post by bluthundr31 » Fri Jul 13, 2018 12:57 am

Kerry, sorry to hear that the shop is going to take your $$ without finding the cause of your problems. Its likely that the bike is older than the mechanic, , or he just doesn't have the experience/knowledge to properly troubleshoot the issue. Let us know whether you plan on letting the shop work on it more.

We can check that fuel pump easy enough with a "jumper" to the battery, and even replace the pulse generators if necessary.

Let us know when you get the "girl" back and are ready to get your hands dirty to fix it, if needed.

DaveO430
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Re: New fuel pump not working, 94 1500 esp

Post by DaveO430 » Fri Jul 13, 2018 6:18 am

Kerry n Cali wrote:
Thu Jul 12, 2018 10:39 pm
AND YES GUYS, I TOOK OFF ALL THE BODY PARTS TO CUT COST.

Don't ever do that, they are going to charge you for it anyway.

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bluthundr31
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Re: New fuel pump not working, 94 1500 esp

Post by bluthundr31 » Fri Jul 13, 2018 6:59 pm

The only "caveat" I'd add to Dave's comment is, ,

Some of us have much of our "tupperware" secured with hooks, straps, wire, and/or velcro, , I don't want anyone who don't know how to take it apart TOUCHING it. They're likely to screw something up tearing it down or putting it back together, , , , , ,and YES, , the cost will be the same either way, , ,

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Kerry n Cali
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Re: New fuel pump not working, 94 1500 esp

Post by Kerry n Cali » Sat Jul 14, 2018 7:02 pm

They're going to replace the pulse generator, it's $109, does that sound right?

With no spark coming, I'm hoping the new part will solve my spark issues and send the correct info to the computer so the fuel pump kicks in....

I'll keep you posted...

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bellboy40
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Re: New fuel pump not working, 94 1500 esp

Post by bellboy40 » Sun Jul 15, 2018 7:14 am

The pulse generator in the fiche at Partzilla.com shows it to be $78.48 plus shipping. It seems the dealer that has your bike is doing a lot of guesswork at your expense. The pulse generator is item #19 in this fiche.
https://www.partzilla.com/catalog/honda ... ront-cover

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bluthundr31
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Re: New fuel pump not working, 94 1500 esp

Post by bluthundr31 » Mon Jul 16, 2018 1:18 am

Got my fingers crossed for you Kerry, , ,everything should work great when they're done. But if it's not, , , let us know and we all can get it up and roadworthy again.

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Kerry n Cali
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Re: New fuel pump not working, 94 1500 esp

Post by Kerry n Cali » Tue Jul 31, 2018 6:09 pm

GAVE UP ON MY RED GOLDWING. A RAT ATE TO MANY WIRES.. THANX FOR ALL YOUR HELP GUYS. PICKED UP A NEW LOVE, F6BD THAT ROCKS



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