Question about 2005 Suzuki Boulevard C50T

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Overheating all fluids are in specs i ride about 20min bike shuts down and chk coolant signal flashes wont restart till motor cools,wondering if there is a fuse or saftey switch prob or ?

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  • Todd Baldwin
    Todd Baldwin Mar 30, 2014

    the bike is a 2006 Suzuki Blvd c50 all fluids are to specs ,issue: start up fine ,warm up fine, ride approx 20 min starts to bog down stalls ,the red temp light on and check coolant guage in dash flashes and start saftey will not let bike restart till cools,and repeats over



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The thermostat must be stuck closed. Best to have it replaced.

Posted on May 14, 2014


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Posted on Jan 02, 2017

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SOURCE: Turns over won't start?

Fuses ok? If you have an alarm installed maybe you need to check it.

Posted on May 29, 2009

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SOURCE: 97 gsxr dies during short rides and wont restart for 8-25 minutes

Check the fuel filter and petcock screen in the bottom of the tank. If either is dirty it will cause what you describe.
Best wishes

Posted on Aug 22, 2009

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SOURCE: everything eletrical shut off

could well be..check the fuse's in the fuse box...its under the seat

Posted on Mar 06, 2010

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SOURCE: Was riding my 2001 Suzuki Intruder 1500 yesterday


Posted on Sep 16, 2010

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SOURCE: the bike starts and runs

Mine has the same fault. The ignition sensor leaks to earth when it is hot so engine cuts out. I've had two sensors fitted. But They still leak to earth. Trying to get Suzuki to sort, permanently.

Posted on Oct 04, 2010

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I have a trx420 qud bike when I go for a long ride it starts to brake down like limp home mod let it cool down 20min it is ok allan

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Ignition is fine, fan kicks in as it should. Unit shuts itself off afer approx 15 mins. Cannot relight till it has cooled down again

Coolant temp sensor has shifted out of range. It is telling the computer that the vehicle is overheating and the computer is shutting off the spark. If the car has a gauge, do not buy the temperature sending unit, this only sends the signal to the gauge. Change the Coolant Temp Sensor.

The other possibility is that your ignition module is bad or the dielectric grease is gone allowing the unit to get hot.

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Bike will start and warm up fine. After riding till its up to operating temp (running fine) no missing or other problems if you shut it down it wont start back up- it just pops and backfires. Only way it...

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Sounds like an airlock. When it fell over an air bubble would've gone to the highest point of the cooling system, & when you picked it back up the air gets trapped, if it gets trapped near the thermostat it will send the computer a false reading & fans wont turn on causing an overheat. Give the cooling system a flush. Remove lowest cooling system hose you can find I think its the water pump hose, & remove the radiator cap all the coolant will drain. Put your garden hose in the radiator turn it on & start your bike, run the hose through it for about ten minutes or untill the water coming out of the hose you removed runs clear then shut the bike off. Put the water pump hose back on, clamp it up, & fill the radiator 50/50 water/glycol. Leave the radiator cap off start the bike & get it to normal operating temperature, as it warms up air will rise to the radiator cap & the coolant level will drop just top it up accordingly. Once the bikes warmed up & bubbles stop rising,  put the cap back on & take it for a ride. Hope this helps! 

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If you did indeed overheat the engine to the point that is stuck, you would probably know it by the antifreeze being poured all over the ground. The bike would be really hot just sitting on it. It would smell like antifreeze and just smell hot.. I know, smell hot? but an engine that has been ran to hot has a pretty distinctive hot smell... It doesnt sound like an overheating situation if none of the above happened. A bike that is overheating will begin to loose power before it stops. LIke lacuna said, everything inside of the engine will start to expand from the heat and the piston will stick in the cylinder. Most of the time when this happens, the bike will cool off and restart. But, usually with problems. Warped or cracked head, cracked block, broken piston rings. These engines are aluminum and dont like to be overheated and warp really easy. If the engine is really hot, it will not turn over until it cools down enough. Im not saying it couldnt have overheated and then restarted without any problems, its happened before, but just not likely. But, if this is the case, take lacunas advice and change all of the fluids. Your oil will be nasty. Maybe get ahold of the previous owner and see if it has had any probems. It kinda sounds electrical to me. as long as the above overheating signs didnt happen. If you dont think it was overheating and it happens again, try to push start the bike to see if the engine turns over. even putting the bike in second or third gear just see if you can move the bike back and forth. If nothing else, you'll at least know its not locked up.

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