Coolant exchange, now this???? - Honda Shadow Forums : Shadow Motorcycle Forum

Reply
 
LinkBack Thread Tools
Old 07-09-2011, 12:19 PM   #1 (permalink)
Member
 
Join Date: Feb 2011
Location: Valdosta, GA
Posts: 74
Default Coolant exchange, now this????

Well, the day started off around 7:00am with an oil change, final drive oil change, and a coolant exchange. All was going well until I got back from a short ride. I got off the bike and let it run for a few more minutes to ensure I wasn't purging any fluid anywhere. Then, my temperature light came on.

This is the first time that I have exchanged the coolant in the bike. I have no idea when the previous owner did this----or if he ever did this. I followed the Honda Service manual to the tee in this procedure.

I shut the bike off and let it sit for a few minutes, then I started her back up. She ran as she should until the fan kicked on. Once the fan fired up, the temperature light came back on.

Any ideas here? Could this be a thermostat issue? Or am I missing something obvious. Thanks to all!

By the way, 1998 VT1100C Aero
__________________


Joey

-----------------

1998 Honda Shadow AERO 1100 VT1100C3
jjowers19 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 07-09-2011, 12:25 PM   #2 (permalink)
Member
 
Jim O's Avatar
 
Join Date: Jul 2011
Location: Red Springs, NC
Posts: 776
Default

I am just about to change my coolant too...so I am eager to see how this turns out.

Jim
__________________
Jim

2007 VT750C2 Shadow Spirit
River Road Compact Slant Medium Saddlebags
Memphis Shades windshield
Ride bell from my daughter
Mustang wide seat
Jim O is offline   Reply With Quote
Old 07-09-2011, 12:27 PM   #3 (permalink)
Member
 
Join Date: Feb 2011
Location: Valdosta, GA
Posts: 74
Default

Overall, the process was fairly easy. I have read many posts on here about coolant exchanges. I just busted out the Honda Service manual and followed the directions. Good luck!
__________________


Joey

-----------------

1998 Honda Shadow AERO 1100 VT1100C3
jjowers19 is offline   Reply With Quote
Old 07-09-2011, 12:35 PM   #4 (permalink)
Member
 
Join Date: Feb 2011
Location: Valdosta, GA
Posts: 74
Default

In addition, I have never had any problems with the bike overheating. The idiot light has never come on. It was just time to do routine maintenance and this time that included the coolant.

There is no coolant boiling out of the radiator itself and there are no leaks coming from anywhere that I can tell. Frustrating.
__________________


Joey

-----------------

1998 Honda Shadow AERO 1100 VT1100C3
jjowers19 is offline   Reply With Quote
Old 07-09-2011, 12:38 PM   #5 (permalink)
Senior Member
 
Join Date: Sep 2010
Location: Portland, Or
Posts: 1,632
Default

It sounds like you had an air bubble in the system when you refilled it.
Let the bike cool down completely and remove the system cap and check the level. It shouldn't have any air in there. If the fluid isn't at the top, top her off.

With a full purge this can take a few cycles for the system to stabilize. Make sure to check the reservior after a ride to check the hot level. If coolant isn't at the hot level when the bike is fresh from a ride, fill it to the proper line.

Some people don't know this but the cooling systems breathe. When the bike is warm it will expel a small amount of coolant into the reservoir. When it cools down it will suck coolant out of the reservoir. If the reservoir is ever empty when the bike is hot (after a ride) then when the bike cools down it will introduce air into the cooing system. Air is bad for the cooling system as it compresses and allows/encourages boiling. Boiling is BAD for the system as the air pockets from the boil will get into the water pump area and thermostat and that will cause a malfunction in the circulation which, in turn, causes more breakdown.

So, make sure there's no air in there.
__________________
Inferno is offline   Reply With Quote
Old 07-09-2011, 12:41 PM   #6 (permalink)
Member
 
Join Date: Feb 2011
Location: Valdosta, GA
Posts: 74
Default

Thanks for the info Inferno. When you say remove the system cap, you mean the actual radiator cap right? Not the reservoir cap? I'm just making sure. I figure here is as good a place to ask dumb questions as any.
__________________


Joey

-----------------

1998 Honda Shadow AERO 1100 VT1100C3
jjowers19 is offline   Reply With Quote
Old 07-09-2011, 12:49 PM   #7 (permalink)
Senior Member
 
Join Date: Sep 2010
Location: Portland, Or
Posts: 1,632
Default

Quote:
Originally Posted by jjowers19 View Post
Thanks for the info Inferno. When you say remove the system cap, you mean the actual radiator cap right? Not the reservoir cap? I'm just making sure. I figure here is as good a place to ask dumb questions as any.
Yes, the radiator cap.

And remember, the dumbest question is the one you should have asked but didn't.
__________________
Inferno is offline   Reply With Quote
Old 07-09-2011, 12:52 PM   #8 (permalink)
Member
 
Join Date: Aug 2010
Location: Eagan, MN
Posts: 748
Default

Yup the radiator cap. Always fill / top off the system through the radiator. Good to have the bike running and give it a few throttle blips to help burb the system as you top it off. Always good to have some rags around during this process. Only put fluid in the reservoir to keep that plastic tank between the hot and cold mark. Inferno did a great job of explanation!

Dave
__________________

'97 VT1100C Black & Chrome...Sold.

New Scoot...Mods Already Made Since This Pic Was Taken
DaveCarlson is offline   Reply With Quote
Old 07-09-2011, 12:53 PM   #9 (permalink)
Senior Member
 
gmck's Avatar
 
Join Date: Sep 2008
Location: Phoenix
Posts: 1,548
Send a message via AIM to gmck
Default

yes, the radiator cap. I had this problem the first time I changed the coolant. It isn't as quick as changing in a car or as tolerant of air. It sure sounds like air. Now that it has run a while take the cap off (when cool) and it should be full to the top. and do make sure to have the reservoir to the hot mark.
gmck is offline   Reply With Quote
Old 07-09-2011, 04:20 PM   #10 (permalink)
Member
 
Join Date: Feb 2011
Location: Valdosta, GA
Posts: 74
Default

Thanks everyone. I think you all were right. I let her cool down, popped the top on the radiator, and sure enough----it was not filled to the top. After topping her off and letting her get to normal operating temperature, all seems to be fine. The fan kicked on as it should. This time, no idiot light to scare the bejeezus out of me.

Thanks again for all that this forum does. I am not so sure that I've ever run into a group of more knowledgeable folks. Have a good weekend all.
__________________


Joey

-----------------

1998 Honda Shadow AERO 1100 VT1100C3
jjowers19 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 04:50 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
Motorcycle News, Videos and Reviews
Honda Grom Forum Harley Davidson Forum Honda 600RR Kawasaki Forum Yamaha R6 Forum Yamaha FZ-09 Forum
1199 Panigale Forum Roadglide Forum Honda CBR1000 Forum Vulcan Forum Yamaha R1 Forum Yamaha R3 Forum
Ducati Monster Forum Harley Forums Honda CBR250R Forum ZX10R Forum Star Raider Forum Yamaha Viking Forum
Suzuki GSXR Forum V-Rod Forums Honda Shadow Forum Kawasaki Motorcycle Forum Star Warrior Forum KTM Duke 390 Forum
SV650 Forum BMW S1000RR Forum Honda Fury Forum Kawasaki Versys Forum Drag Racing Forum Ducati 899 Panigale Forum
Suzuki V-Strom BMW K1600 Triumph Forum Victory Forums Sportbikes BMW NineT Forum
Volusia Forum BMW F800 Forum Triumph 675 Forum MV Agusta Forum HD Street Forum Suzuki GW250 Forum
Yamaha Motorcycles Victory Gunner Forum Honda Vultus Forum HD LiveWire Forum