Thermostat not opening???


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dingdong
Posts: 3731
Joined: Thu Apr 08, 2010 8:35 am
Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500A
2004 NRX1800 Rune SOLD

Thermostat not opening???

Post by dingdong » Wed Jul 31, 2019 11:37 am



My 76 seems to reach fan on temps quicker than usual. Fan comes on and drops temp but I noticed the upper section of the radiator is room temperature. According to my cheapy temp gun the temp is around 110 degrees. Is this a thermostat that is not opening?


Tom

"Molon Labe"

John F. Kennedy would be impeached by todays liberal Democratic socialist party.

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DenverWinger
Posts: 1092
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Location: Denver, CO
Motorcycle: (s)
1980 GL1100 STD Vetter (2005-)
1993 GL1500 Aspencade (2017-)
1983 Trav-Lite Camper (2010-)
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1972 CL350 (1980-1988) sold
1978 Suzuki GS550 (1985-2005) sold
1977 GL1000 (2002-2006) sold

Re: Thermostat not opening???

Post by DenverWinger » Wed Jul 31, 2019 5:53 pm

Probably low coolant in the radiator.
♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:

~Mark

User avatar
dingdong
Posts: 3731
Joined: Thu Apr 08, 2010 8:35 am
Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500A
2004 NRX1800 Rune SOLD

Re: Thermostat not opening???

Post by dingdong » Thu Aug 01, 2019 7:34 am

I guess I am getting senile in my old age. Last service I flushed and replaced the coolant. I just filled the radiator and overflow tank then forgot to burp it. Low coolant was the problem.
Tom

"Molon Labe"

John F. Kennedy would be impeached by todays liberal Democratic socialist party.

User avatar
DenverWinger
Posts: 1092
Joined: Thu Jun 23, 2011 2:20 pm
Location: Denver, CO
Motorcycle: (s)
1980 GL1100 STD Vetter (2005-)
1993 GL1500 Aspencade (2017-)
1983 Trav-Lite Camper (2010-)
Past rides
1972 CL350 (1980-1988) sold
1978 Suzuki GS550 (1985-2005) sold
1977 GL1000 (2002-2006) sold

Re: Thermostat not opening???

Post by DenverWinger » Thu Aug 01, 2019 8:05 am

Just driving it around it would have eventually burped itself out and replenished from the overflow tank until the tank was depleted... :D


♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:

~Mark

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