Question about 2005 Suzuki Boulevard C90T

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My problem with my 2005 C90T Boulevard is electrical. There is no power to the fuel pump. So there is no fuel pressure at all. Bike has been in storage for about a year.

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  • skidnlt Apr 02, 2011

    I have checked the fuse, and it is good.

    There is no power from the fuse box to the pump itself. I have also checked all wires for damage or bad connections.

    If there is now power going to the fuel pump, I can't determine if the fuel pump is bad or not. I hate to buy a new fuel pump at the cost of $470-$525 dollars when I don't know if the one I have is bad.

  • skidnlt Apr 03, 2011

    Thank you for your last message. I have checked the main fuse (which is a 10 amp fuse). Connected to the main fuse box is a relay that goes directly to the pump. There is power to the relay but no power from the relay to the pump. Now the problem-I have been to 2 Suzuki dealers. They tell me that relay does NOT EXIST in that bike. It is a 7 prong relay.

    How do I manage to find the relay switch that is in this motorcycle?

  • skidnlt Apr 06, 2011

    I had a mechanic friend come and trace out the problem. It turns out it was not an electrical problem, but the fule pump itself was bad. I purchased a new fuel pump, hooked it up last night and she fired right up!

    Thank you for your help.



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Well I'm betting the fuse for the fuel pump is blown, check the fuse panel and replace the fuse. should be a 10 amp..

you can also run the pump directly, connect a wire from the positive battery terminal to the pos terminal of the fuel pump. this will allow you to start and ride it so you can take it to a garage or where ever until you fix it or have it fixed. Ps remember to disconnect the wire after u turn the bike off.

Posted on Apr 01, 2011

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  • Rishi Roshan Ali Apr 02, 2011

    If there is no power going to the pump,, then it has to be the fuse or relay (of it has one),,, check to see if the fuse itself is getting power, If its not check your main fuse..

    to test pump, connect a wire on the battery and run it directly to the pump. but forget about that for now lets focus on getting power to the pump... check fuse, check if the fuse is getting power, if not check the main fuse and harness.

  • Rishi Roshan Ali Apr 03, 2011

    hold up ??? the dealers say the bike has no relay, I know its not supposed to have a relay yet you found 1 ,, 7 pins (or multi relay)

    does that bike have a converted engine ??? eighter way you just found your own fix.. power goes to the relay but not to the pump,,, The relay has a part number, order it, it will tell you which engine its for. plus it will fix your problem. I did not know that , that bike had a relay eighter!!

  • Rishi Roshan Ali Apr 03, 2011

    Bth the relay switch is the ignition, its the com for all fuel pump relays, once its on, it sends a com signal to the relay to allow power to flow.

  • Rishi Roshan Ali Apr 06, 2011

    ok no problem.. well thats what the above was to test.. let me know if you need more help.



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2005 suzuki boulevard c90t will not start when key is turned on, for a split second you hear the fuel pump then it stops and the motorcycle will not start.

Go to the LC/C90 owners forum on the Delphi forums and ask your question. It's the best move you'll ever make as long as you own that bike.
Trust me, I have one too. You can register for a free acct. and find out anything you need to know. Save yourself a boatload of time, money and frustration.

Sep 02, 2012 | 2005 Suzuki Boulevard C90T

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2005 Suzuki Boulevard C90T cuts out

Hi, Anonymous and the usual suspects are:
1. Severely discharged or a damaged battery should have 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a preliminary reading of 12.5 volts or more but little or zero amperage the battery is faulty and must be replaced, AGM batteries fail in this scenario more so than lead-acid batteries.
2. Failed alternator/generator and or voltage regulator.
3. Loose or corroded battery terminals and or cables especially the "NEGATIVE" cable, look for loose, corroded, or broken connectors inside the cable harness at "BOTH" ends.
4. Failed main circuit breaker or ignition switch, check for loose connections and continuity.
5. Failed system and or ignition relay, check for continuity.
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7. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor, corroded, loose or broken wire connector pins/sockets.
8. Throttle cables and or idle speed improperly adjusted hot idle speed should be 950 RPM to 1000 RPM.
9. Faulty neutral, side stand or clutch lever safety switch.
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12. Water or dirt in the fuel system, carburetor or filter.
13. Restricted, blocked or kinked fuel line.
14. Fuel tank empty.
15. The gas cap is not venting properly or fuel tank venting system blocked, loosen gas cap and go for a test ride.
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18. Needle and seat stuck closed in the float bowl.
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20. Lean angle switch is faulty or needs adjustment.
21. Catastrophic engine failure, perform a compression test.
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Nov 26, 2017 | 2005 Suzuki Boulevard C90T

2 Answers

Where is the fuses on a suzuki c90t

According to the 2007 owners manual for my C90T there is a 30A main fuse located behind the left upper cover. To access the main fuse lift the fuel tank lid and remove the six bolts that are holding the left and right tank covers in place (not the screws that are located under the fuel cap) then remove the two screws on the front of the speedometer/fuel inlet cover (they face the base of the handlebar risers) then remove the left tank cover and left upper cover by removing the screw at the base of the left upper cover. One 30A spare fuse should be located in the main fuse box. To access the fuse bank containing the other six fuses remove the right crank case cover, once it is cool to the touch. One 10A and one 15A spare fuse should be located in the main fuse box. Fuse list: 30A MAIN fuse protects all circuits; 10A HEAD-HI fuse protects the headlight high beam and headlight high beam indicator light; 10A HEAD-LO fuse protects the headlight low beam; 10A FUEL fuse protects the ECU, fuel pump, injectors, neutral indicator light and oil pressure indicator light; 15A IGNITION fuse protects the fuel pump relay, starter relay, ignition coils, decomp relay and solenoid; 15A SIGNAL fuse protects the turn signal indicator light, FI indicator light, speedometer lights, brake light/tail light and horn; 10A POWER SOURCE fuse protects the electrical accessories connected to the output terminal

Aug 13, 2011 | 2005 Suzuki Boulevard C90T

1 Answer

2007 suzuki boulevard c90t. Starts right up no problem, but only runs for about 5 second then dies. Will start right back up, then shut off again.. So on and so on


It sounds like your bike is starving for fuel. Check your fuel pump (pull the outlet hose off and try starting it) and your fuel filter. Also check your carb lines to see if fuel is constant at the carbs.

Try these things and if none of the above works, reply to this post and let me know what you discovered so that I can determine the next steps you need to take.

Hope this helps. If you find this information useful, please vote on this post. Thank you.



Jan 17, 2011 | 2005 Suzuki Boulevard C90T

1 Answer

Cluch seemed to go out of bike, i think it over h...

you possibly have an air bubble in the line. if it's not bled properly you might experience the same problem in the future.

May 20, 2010 | 2005 Suzuki Boulevard C90T

1 Answer

Engine want start

Be looking for the fuse to instrament needing replacement.

Apr 12, 2010 | 2005 Suzuki Boulevard C90T

1 Answer

I have a 06 suzuki c90t,it will crank,then quits f1 light is flashing any help

the bike has efi.
if the f1 light is flashing then it looks as if a dealer is your next port of call as the fi would indicate a problem with the efi (electronic fuel injection) system

hope this helps.

Dec 24, 2009 | 2005 Suzuki Boulevard C90T

1 Answer

Rough start, won't stay running. Got bad gas at

Drain the tank of the old fuel completely, try to drain the fuel lines as best you can. Whilst the tank is empty, if you can remove the fuel pump and clean out the filter for debris or gunk. Pull out the spark plugs and see if they have fouled, don't try cleaning them just replace. I have found once a plug is fouled, it is best to just bite the bullit and buy new ones as issues can happen again.

Nov 24, 2009 | 2005 Suzuki Boulevard C90T

1 Answer

2005 Suzuki c90 Boulevard, started bike up after sitting since last fall, (we live in NB, Canada) the fuel injection light comes on and stays on...why? how do I reset?

You can reset by disconnecting the battery for about half an hour, but the gaskets on the fuel system have been dry for a couple of months, and in turn have shrunk, this would cause the pressure to drop, and you may need to re-tighten all the screws on the feul pump, rail etc. Hope that helps!

Mar 10, 2009 | 2005 Suzuki Boulevard C90T

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