Honda CX500 & GL500 Forum

Search Sort Posts:  Oldest to newest Newest to oldest

09-15-2007, 10:29 PM cxorphan Joined on 09-16-2007 Posts 1 Over heat Problem on CX500 82 model Hi all, just new to this board, so I'm looking for a little help. I purchased this bike of a fellow in Sydney Austrlalia about 3 weeks ago, when I took it for a ride the temp gauge went from cold to boiling within 3 minutes. After I took it for a ride I asked him what the go was with it, he replied "that it has never work properly" even after a 10 minute ride the bike didn't feel to bad. Last weekend it was starting to bug me, so I emptied all the coolant, took of the radiator and flushed it all out,even put a new thermostat in it, put it all back togther...and the same problem. The old coolant looked to be fine, but didn't know whether the old thermostat worked or not, so I just replaced it. I don't (or hope) think that it isn't the water pump, as the bike seems OK over a 30 minute ride...but how can I be sure. Would the coolant get to a boiling point if the pump wasn't working correctly or the bike overheating? Is there another way to test that the pump is working (without pulling it all to bits) or would it be safe to run without a thermostat in it? Any advise would be great.    Report

09-15-2007, 10:58 PM Harold Joined on 12-27-2006 Beside Washademoak Lake, N.B. Canada Posts 350 Re: Over heat Problem on CX500 82 model Probably a bad regulator. See this thread. http://choppercharles.com/cs/forums/18562/ShowPost.aspx "People are more violently opposed to fur than leather because it's safer to harass rich women than biker gangs." 1978 CX500 1980 CX500 Custom 1981 CX500 Custom 1982 GL500 Silverwing 1975 XL-100 http://www.myspace.com/downwiththebutterfly    Report

09-18-2007, 3:48 PM DaWei Joined on 11-25-2006 Atlantic County, NJ Posts 444 Re: Over heat Problem on CX500 82 model As Harold said, it sounds like your 7-volt regulator is blown.  The temperature gauge operates on seven volts, and a blown regulator sends 12 volts to the gauge - which looks then like you're overheating.  If you're really overheating, you'll push coolant into the reservoir bottle and then out the overflow hose. If the waterpipe on the left side of the engine gets hot, the pump is working and the 'stat (if installed) is open.  The pipe only sees hot water if there is circulation through the radiator. I'm currently running with no thermostat.  The thermostat slows down the cooling, so the engine will warm up faster in cool weather.  Not having a 'stat will never make the engine run hotter, but if it can't get up to the design temp you'll possibly loose a few MPG. Dave in NJ '80 CX500 C - out of action, pending Triple Bypass '78 CX500 - needs NJDMV Title before 20-Aug-09    Report

Honda CX500 & G... » CX500 GL500 Tra... » General Discuss... » Re: Over heat Problem on CX500 82 model

(please select) Forums Home |- Search Forums |- Active Topics |- Unanswered Posts User Options |- Sign In |- Join this community |- Forgot Password CX500 GL500 Transverse Twins Discussion Forum |- General Discussion |- CX Customization and Modifications |- CX500 & CX650 Turbo Forum |- Travelling, Friends, and Trips |- Selling and Buying Forum |- Technical Help Forum Other Forums |- Off-Topic Posts |- Test Forum