| GL1100 running hot. | Rate Topic |
| Moderators: redbaron, MDKramer, Flyone, AZgl1500 | Page: 1 2   |
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| Posted: Tue Jan 31st, 2012 07:27 pm | 1st Post |
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The temp gauge is reading almost to the red side of the gauge. This is after about 5 to 8 miles. The coolant in the expansion tank is cool all the time. To me this sounds like a stuck thermostat. Any other ideas? If it is a theromstat how hard is it to replace? Anyone have step by step instructions?
____________________ Viet Nam Vet Jan-Sept 70 USN MCB10. V.F.W. Post 1946 Life Member A.M.A. Member #1101966 NFD IAFF Local 1219 Retired. Elks Lodge #967 Bike History: 68 Triumph 250 Single, 1970 Honda CB450, 70 Moto Guzzi 700, 73 Honda CB750K, 74 Honda Shadow 750, 19 Yrs. of Abstinance, 1983 Honda GL1100I. |
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| Posted: Tue Jan 31st, 2012 07:29 pm | 2nd Post |
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How's your water pump and when was thre last time you flushed/changed out your coolant? Last edited on Tue Jan 31st, 2012 07:30 pm by Dusty Boots ____________________ Ken - 1992 GL1500 Aspencade - Dorksider # 2 6th Officer/Road Captain - CMC, 034 Cannington Chapter Find your Path and share the Journey! "It's never too early to plan and never too late to go!" - Dusty Boots Hmm ..... wonder where that stretch of blacktop leads to ...... What has Dusty been up to Prevent/Repair those cracked 1500 trunk lids by installing a set of Rudy's Lid Reinforcement Panels to the underside of your trunk lid. |
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| Posted: Tue Jan 31st, 2012 07:34 pm | 3rd Post |
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Waterpump seems to be good. Coolant was just changed about 200 miles ago when belts were changed. Radiator was drained and removed thats's why I'm leaning to the thermostat being stuck. Sometimes when they sit after the radiator and system is drained old thermostats will get stuck shut. Have seen it happen in cars before.
____________________ Viet Nam Vet Jan-Sept 70 USN MCB10. V.F.W. Post 1946 Life Member A.M.A. Member #1101966 NFD IAFF Local 1219 Retired. Elks Lodge #967 Bike History: 68 Triumph 250 Single, 1970 Honda CB450, 70 Moto Guzzi 700, 73 Honda CB750K, 74 Honda Shadow 750, 19 Yrs. of Abstinance, 1983 Honda GL1100I. |
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| Posted: Tue Jan 31st, 2012 07:37 pm | 4th Post |
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I would check the water pump, and replace the thermostat and hoses if you don't know they have been done along w/flush system, check the radiator & new antifreeze. Last edited on Tue Jan 31st, 2012 07:38 pm by newday777 ____________________ Stu John 14:6 CMA Wings of Eagles-Escondido CA SAN DIEGO Patriot Guard Ryder 1999 GL1500 SE(@57k) The LORD provided this through a friend's wish to leave it to me I'm blown away! Dan beat me there and is enjoying the real Heaven. Remember to be there for your friends and thank them for being your friend. Previous bikes 1983 ASPENCADE(Barn find) bought 7/08 & restored from 13 yr neglect by po @ 35,595mi, now given to a pastor to enjoy the blessings @ 62,000 25 Yrs. of Abstinance(no bike) - Raising kids, now a PA PA 76 CB750K(new) w/Golden Lab Cody, rode w/me 35k miles & 5 times X country in 3 yrs sold @ 45k 75 CB750K(new) 9,000 mi http://www.motorcycleclassics.com/MC-Dispatch/Royce-Thiessen-Honda-CB750.aspx 74 CB450(new) 9,000 mi first yrhttp://www.bikez.com/motorcycles/honda_cb_450_disc_1974.php |
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| Posted: Tue Jan 31st, 2012 07:45 pm | 5th Post |
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If you had the radiator out, then you pretty much know everything you need to in order to change the thermostat. May as well refresh the hoses and replace the thermostat O-ring while you are in there.
____________________ '74 CB750 K4 '77 CB550 K3 '82 CM250C '82 GL1100 Interstate w/ Auburn Gemini (doublewide) Sidecar "Can I have a motorcycle when I get old enough?" "If you take care of it." "What do you have to do?" "Lot’s of things. You’ve been watching me." "Will you show me all of them?" "Sure." "It is hard?" "Not if you have the right attitudes. It’s having the right attitudes that’s hard." -R.Pirsig; Zen and the Art of Motorcycle Maintenance- PGR since 2011 |
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| Posted: Tue Jan 31st, 2012 07:49 pm | 6th Post |
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Thereare no antifreeze, oil, or anything else under the bike. That's why I think the water pump is ok.
____________________ Viet Nam Vet Jan-Sept 70 USN MCB10. V.F.W. Post 1946 Life Member A.M.A. Member #1101966 NFD IAFF Local 1219 Retired. Elks Lodge #967 Bike History: 68 Triumph 250 Single, 1970 Honda CB450, 70 Moto Guzzi 700, 73 Honda CB750K, 74 Honda Shadow 750, 19 Yrs. of Abstinance, 1983 Honda GL1100I. |
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| Posted: Tue Jan 31st, 2012 08:01 pm | 7th Post |
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Check the bearings and impeller
____________________ Stu John 14:6 CMA Wings of Eagles-Escondido CA SAN DIEGO Patriot Guard Ryder 1999 GL1500 SE(@57k) The LORD provided this through a friend's wish to leave it to me I'm blown away! Dan beat me there and is enjoying the real Heaven. Remember to be there for your friends and thank them for being your friend. Previous bikes 1983 ASPENCADE(Barn find) bought 7/08 & restored from 13 yr neglect by po @ 35,595mi, now given to a pastor to enjoy the blessings @ 62,000 25 Yrs. of Abstinance(no bike) - Raising kids, now a PA PA 76 CB750K(new) w/Golden Lab Cody, rode w/me 35k miles & 5 times X country in 3 yrs sold @ 45k 75 CB750K(new) 9,000 mi http://www.motorcycleclassics.com/MC-Dispatch/Royce-Thiessen-Honda-CB750.aspx 74 CB450(new) 9,000 mi first yrhttp://www.bikez.com/motorcycles/honda_cb_450_disc_1974.php |
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| Posted: Tue Jan 31st, 2012 08:05 pm | 8th Post |
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As you say it might only be the thermostat stuck. While you have it drained to replace that, pull the pump inspection cover, if it has the original funalic impeller you might be wise while it's cold out to update it.
____________________ Stu John 14:6 CMA Wings of Eagles-Escondido CA SAN DIEGO Patriot Guard Ryder 1999 GL1500 SE(@57k) The LORD provided this through a friend's wish to leave it to me I'm blown away! Dan beat me there and is enjoying the real Heaven. Remember to be there for your friends and thank them for being your friend. Previous bikes 1983 ASPENCADE(Barn find) bought 7/08 & restored from 13 yr neglect by po @ 35,595mi, now given to a pastor to enjoy the blessings @ 62,000 25 Yrs. of Abstinance(no bike) - Raising kids, now a PA PA 76 CB750K(new) w/Golden Lab Cody, rode w/me 35k miles & 5 times X country in 3 yrs sold @ 45k 75 CB750K(new) 9,000 mi http://www.motorcycleclassics.com/MC-Dispatch/Royce-Thiessen-Honda-CB750.aspx 74 CB450(new) 9,000 mi first yrhttp://www.bikez.com/motorcycles/honda_cb_450_disc_1974.php |
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| Posted: Tue Jan 31st, 2012 08:08 pm | 9th Post |
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I did not have the radiator out the repair shop did. I was kind of hoping to be able to change the thermostat with making a major project out of it. Replacing the water pump sounds major.
____________________ Viet Nam Vet Jan-Sept 70 USN MCB10. V.F.W. Post 1946 Life Member A.M.A. Member #1101966 NFD IAFF Local 1219 Retired. Elks Lodge #967 Bike History: 68 Triumph 250 Single, 1970 Honda CB450, 70 Moto Guzzi 700, 73 Honda CB750K, 74 Honda Shadow 750, 19 Yrs. of Abstinance, 1983 Honda GL1100I. |
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| Posted: Tue Jan 31st, 2012 08:10 pm | 10th Post |
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Your choice bro, at least pull the cover and check it for looseness in the bearings.
____________________ Stu John 14:6 CMA Wings of Eagles-Escondido CA SAN DIEGO Patriot Guard Ryder 1999 GL1500 SE(@57k) The LORD provided this through a friend's wish to leave it to me I'm blown away! Dan beat me there and is enjoying the real Heaven. Remember to be there for your friends and thank them for being your friend. Previous bikes 1983 ASPENCADE(Barn find) bought 7/08 & restored from 13 yr neglect by po @ 35,595mi, now given to a pastor to enjoy the blessings @ 62,000 25 Yrs. of Abstinance(no bike) - Raising kids, now a PA PA 76 CB750K(new) w/Golden Lab Cody, rode w/me 35k miles & 5 times X country in 3 yrs sold @ 45k 75 CB750K(new) 9,000 mi http://www.motorcycleclassics.com/MC-Dispatch/Royce-Thiessen-Honda-CB750.aspx 74 CB450(new) 9,000 mi first yrhttp://www.bikez.com/motorcycles/honda_cb_450_disc_1974.php |
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| Posted: Wed Feb 1st, 2012 12:05 am | 11th Post |
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First question is your fan working? It should come on about 3/4th of the way to the meter redline. A couple of quick checks you could make would be to remove the radiator cap and fire up the engine. Watch for bubbles in the radiator neck, that can indicate a leaking head gasket especially if you see any white smoke out of the pipes right after start up. If you do, check the spark plugs to see if one is unusually white like it's been steam cleaned. That's another indication of a leaking head gasket. Also watch the level of the coolant in the radiator as you rev up and slow down the engine, if you see a major change in the level of coolant that's a strong indication of a scaled radiator. If the level does change quite a bit an infrared non-contact temp gauge (Harbor Freight has inexpensive ones) can tell you a lot about the condition of your radiator. The temperature of the radiator ought to change smoothly from hottest at the top to coolest at the bottom. The radiator's temperature should be pretty much the same across its width at any given height. Any cool spots indicate heavy scale or plugging. One other thing to check is to make sure your temp gauge isn't lying. The best way to check it is to remove the sensor, reconnect it with a longer piece of wire and hang it in a can with the business end submerged in oil along with a candy thermometer and heat the whole thing with a torch. At approximately 180F or thereabouts the bike gauge should show pretty close to half scale. If you have a service manual handy it will tell you the proper temperature for a given meter deflection. Cool coolant in the expansion tank could also mean a leak in the tubing between the radiator and the bottle that prevents the level in the bottle from changing. The last thing I'd check would be the pump by pulling the little cover from the front cover and see if the impeller will turn by hand, it shouldn't, or whether you can wiggle the impeller or not, you shouldn't be able to.
____________________ If you can't ride, fly or sail it, why bother? 2001 Goldwing 1800 Paul W. |
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| Posted: Tue Feb 7th, 2012 12:49 pm | 12th Post |
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Update on overheating. Got it back from the shop and took it for a ride. Same problem. Back to the shop. They have no idea why this is happening. Thermostat is good, woter pump is working, flushed the radiator and cooling tubes, nothing seems to be blocked. Waiting for a call back.
____________________ Viet Nam Vet Jan-Sept 70 USN MCB10. V.F.W. Post 1946 Life Member A.M.A. Member #1101966 NFD IAFF Local 1219 Retired. Elks Lodge #967 Bike History: 68 Triumph 250 Single, 1970 Honda CB450, 70 Moto Guzzi 700, 73 Honda CB750K, 74 Honda Shadow 750, 19 Yrs. of Abstinance, 1983 Honda GL1100I. |
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| Posted: Tue Feb 7th, 2012 01:07 pm | 13th Post |
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Test the thermostat in a pan of water on the stove with a thermometer, and check the impellers on the pump, there should be no wiggle from side to side (bad bearings), and they should not be turning freely by hand (broken shaft), but should turn when the motor is turned over. lastly does the fan turn on at the correct time (3/4 of the way up), did the shop actually reconnect the fan plug? is the temp. sending switch still connected and working? It is easy to break the wire at the temp sending switch.
____________________ 'RIDE TO BE SEEN' Most common quote from a cager after killing a motorcyclist is? "I never saw him". |
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| Posted: Tue Feb 7th, 2012 01:22 pm | 14th Post |
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Is it overheating above 3/4, say all the way to the top?
____________________ Stu John 14:6 CMA Wings of Eagles-Escondido CA SAN DIEGO Patriot Guard Ryder 1999 GL1500 SE(@57k) The LORD provided this through a friend's wish to leave it to me I'm blown away! Dan beat me there and is enjoying the real Heaven. Remember to be there for your friends and thank them for being your friend. Previous bikes 1983 ASPENCADE(Barn find) bought 7/08 & restored from 13 yr neglect by po @ 35,595mi, now given to a pastor to enjoy the blessings @ 62,000 25 Yrs. of Abstinance(no bike) - Raising kids, now a PA PA 76 CB750K(new) w/Golden Lab Cody, rode w/me 35k miles & 5 times X country in 3 yrs sold @ 45k 75 CB750K(new) 9,000 mi http://www.motorcycleclassics.com/MC-Dispatch/Royce-Thiessen-Honda-CB750.aspx 74 CB450(new) 9,000 mi first yrhttp://www.bikez.com/motorcycles/honda_cb_450_disc_1974.php |
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| Posted: Tue Feb 7th, 2012 01:23 pm | 15th Post |
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The overflow tank is to collect the "OVERFLOW" of a boil-over.
____________________ Stu John 14:6 CMA Wings of Eagles-Escondido CA SAN DIEGO Patriot Guard Ryder 1999 GL1500 SE(@57k) The LORD provided this through a friend's wish to leave it to me I'm blown away! Dan beat me there and is enjoying the real Heaven. Remember to be there for your friends and thank them for being your friend. Previous bikes 1983 ASPENCADE(Barn find) bought 7/08 & restored from 13 yr neglect by po @ 35,595mi, now given to a pastor to enjoy the blessings @ 62,000 25 Yrs. of Abstinance(no bike) - Raising kids, now a PA PA 76 CB750K(new) w/Golden Lab Cody, rode w/me 35k miles & 5 times X country in 3 yrs sold @ 45k 75 CB750K(new) 9,000 mi http://www.motorcycleclassics.com/MC-Dispatch/Royce-Thiessen-Honda-CB750.aspx 74 CB450(new) 9,000 mi first yrhttp://www.bikez.com/motorcycles/honda_cb_450_disc_1974.php |
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| Posted: Tue Feb 7th, 2012 04:45 pm | 16th Post |
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Overheating the other day was all the way to the RED. Basically ran right at the end of the WHITE NORMAL area. Around town runs between 1/2 way and 3/4's of the way up oon the gauge. At highway speeds it's all the way up. The spo is working on it. The thermostat was check there and was operating fine according to the mechanic. I have had work done there before with great results at a reasonable price. This is the first problem that I've had after the work was done.
____________________ Viet Nam Vet Jan-Sept 70 USN MCB10. V.F.W. Post 1946 Life Member A.M.A. Member #1101966 NFD IAFF Local 1219 Retired. Elks Lodge #967 Bike History: 68 Triumph 250 Single, 1970 Honda CB450, 70 Moto Guzzi 700, 73 Honda CB750K, 74 Honda Shadow 750, 19 Yrs. of Abstinance, 1983 Honda GL1100I. |
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| Posted: Tue Feb 7th, 2012 05:18 pm | 17th Post |
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2ac911 wrote: The thermostat was check there and was operating fine according to the mechanic. That's great, ...ask him what he did exactly to check it. ...then give him a new one to put in.
____________________ "They're gonna make it look like suicide." Hunter S. Thompson, one day before his death. |
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| Posted: Tue Feb 7th, 2012 05:42 pm | 18th Post |
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Did they replace the thermostat and hoses and rad cap? Are you still running the originals? They are cheap to buy aftermarket. An old hose will expand and no allow the water to flow properly. Old thermostats hang up. Old rad caps leak pressure, needed to make system work right. If all they are doing is inspecting, you will continue your saga. Replace them. If the pump has not been inspected, well it's your bike..... You have been given the proper way to get r done in all the above posts by all the members trying to help you out. Yes you will have to spend some money to fix it. We're here to help you get r done, but if not followed why ask. If you don't do these then you will still be guessing as it could be leaking head gaskets as said above too. Too many variables that have to be taken care of to narrow it down. GL 1100 aftermarket parts numbers Radiator Hose GL1000, GL1100, GL1200 (Cut in half to make 2 hoses) NAPA - 7733 Gates - 21008 Thought this should be added over here. Posted by Peterbylt; The thermal switch on my 81 gl1100 has been broken for some time. I dropped a couple of wires down and hardwired a toggle switch across it. $80 or $90 dollars for the replacement switch seemed a little excessive. I read on the nakedwings board that a thermal switch out of a 94 Geo Metro 1.0L was the right thread and temp so I went to Advance auto parts and bought one for $16.95. The switch did not have the protruding extension on the inside and had different connectors but it did have the correct threads and screwed right in. I made some little connector wire adapters so I would not have to cut the original wiring harness and I wanted to keep the bypass switch. The switch works like a champ and comes on when it should and shuts off when it should. ____________________ GL1100 Thermostat. The Stant 13868 or Napa 101 are direct replacements for the GL1100 thermostat. GL1100 - Radiator cap- Stant 10229 and Stant 11229 both are interchangeable. CarQuest Part 33030 "Cross reference # for a Fuel filter for an 82, 1100A Napa 3011. Timing Belts GL1000 & GL1100 Gates - #5119 or #T274 (2ea.) NAPA - #250274 (2 ea.) Goodyear - #40274 (2 ea.) Last edited on Tue Feb 7th, 2012 05:54 pm by newday777 ____________________ Stu John 14:6 CMA Wings of Eagles-Escondido CA SAN DIEGO Patriot Guard Ryder 1999 GL1500 SE(@57k) The LORD provided this through a friend's wish to leave it to me I'm blown away! Dan beat me there and is enjoying the real Heaven. Remember to be there for your friends and thank them for being your friend. Previous bikes 1983 ASPENCADE(Barn find) bought 7/08 & restored from 13 yr neglect by po @ 35,595mi, now given to a pastor to enjoy the blessings @ 62,000 25 Yrs. of Abstinance(no bike) - Raising kids, now a PA PA 76 CB750K(new) w/Golden Lab Cody, rode w/me 35k miles & 5 times X country in 3 yrs sold @ 45k 75 CB750K(new) 9,000 mi http://www.motorcycleclassics.com/MC-Dispatch/Royce-Thiessen-Honda-CB750.aspx 74 CB450(new) 9,000 mi first yrhttp://www.bikez.com/motorcycles/honda_cb_450_disc_1974.php |
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| Posted: Tue Feb 7th, 2012 07:12 pm | 19th Post |
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newday777 wrote: The overflow tank is to collect the "OVERFLOW" of a boil-over. Actually it's not for that. The purpose of the expansion tank is to allow the radiator to operate without any air in it. If you could fill the radiator to the point where there is no air at all in it, which is necessary for maximum heat radiation, it would put high pressure on the radiator and hoses when the coolant expands as it heats. On older vehicles that didn't use expansion tanks the radiator cap just released the pressure once it overcame the cap's spring tension. Once that happened the pressure on the radiator and hoses became negative as the coolant cooled and shrank which tended to lower the boiling point of the coolant the same way water boils at higher altitudes where the air pressure is lower. The expansion tank allows the coolant to expand and express the extra coolant in to the expansion tank. As the radiator cools off the pressure in the system lowers and sucks the coolant from the coolant tank back into the radiator so the pressure inside the radiator varies only as much as the pressure settings on the cap. The cap normally has a definite pressure setting such as 7psi, 12psi or some such. It also has a valve in the cap that allows the coolant to be sucked back in the other direction at much lower negative pressures of less than 1psi or so. If the coolant reaches the boiling point the expansion tank can be filled up completely and then it vents the extra coolant out. When that happens the radiator will suck all the coolant out of the expansion tank and some air as well which reduces the radiation capability of the radiator resulting in even more overheating on the next cycle.
____________________ If you can't ride, fly or sail it, why bother? 2001 Goldwing 1800 Paul W. |
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| Posted: Tue Feb 7th, 2012 07:17 pm | 20th Post |
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2ac911 wrote: Overheating the other day was all the way to the RED. Basically ran right at the end of the WHITE NORMAL area. Around town runs between 1/2 way and 3/4's of the way up oon the gauge. At highway speeds it's all the way up. The spo is working on it. The thermostat was check there and was operating fine according to the mechanic. I have had work done there before with great results at a reasonable price. This is the first problem that I've had after the work was done.I'd check the temps on the radiator face with an IR thermometer. If that showed nothing unusual about the heat distribution on the radiator suface I'd really take a look a the water pump to make sure it's actually turning. On Logtech's old 1100 the shaft that drives the water pump broke on the water pump end which resulted in the water pump impeller not turning. That resulted in higher temperatures at higher speeds which is the opposite of normal operation. It's easy to check, pull off the pump cover which is held on by two bolts where the lower radiator hose attaches and see if the pump impeller will turn by hand. If it does there's a problem. There shouldn't be any play when trying to hand turn it.
____________________ If you can't ride, fly or sail it, why bother? 2001 Goldwing 1800 Paul W. |
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