Thermostat Replacement

Discussion in 'Mechanics Garage' started by Action, Nov 4, 2007.

  1. NorcalBoy

    NorcalBoy New Member

    Country:
    United States
    Joined:
    Aug 29, 2007
    Messages:
    4,262
    Likes Received:
    78
    Trophy Points:
    48
    Location:
    Desert Southwest
    Map
    It isn't worth whining about.
     
  2. donald branscom

    donald branscom New Member

    Joined:
    Aug 27, 2009
    Messages:
    1,934
    Likes Received:
    1
    Trophy Points:
    0
    Location:
    Guerneville CA
    Map
    It is easy to say that. but if YOU walked out and saw coolant leaking from underneath your injection system and you knew you were going to have to do the same repair, I do not think you would be overjoyed.
     
  3. Mark 024

    Mark 024 New Member

    Country:
    Australia
    Joined:
    Oct 24, 2009
    Messages:
    413
    Likes Received:
    1
    Trophy Points:
    18
    Location:
    Sydney, Aust
    Map
    Great write up Action. Glad it is a sticky
     
  4. Mark 024

    Mark 024 New Member

    Country:
    Australia
    Joined:
    Oct 24, 2009
    Messages:
    413
    Likes Received:
    1
    Trophy Points:
    18
    Location:
    Sydney, Aust
    Map
    Just re-read. Lifting the TB tomorrow. Thanks for all the tips fellas.
    May have to clean the grease of the wife's hairdryer before I put it back in the drawer LOL
     
  5. turbo snail

    turbo snail New Member

    Joined:
    Sep 30, 2008
    Messages:
    6
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Milpitas CA
    Map
    If you put a thin coat of RTV on the inside surface of the couplers they will slide together almost effortlessly and removing them the next time will be a snap. this works geat for coolant hoses as well.

    Try it you'll like it.
     
  6. Schroedog

    Schroedog New Member

    Joined:
    Nov 16, 2010
    Messages:
    6
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Tehachapi, Ca
    Map
    I did my 2002 t-stat last night and it went very well thanks to this thread. On the throttle body I loosened the top clamps on the right side of the engine because they were easier to reach for me. The thermostat was stuck wide open.
     
  7. 04viffer

    04viffer New Member

    Joined:
    Aug 22, 2010
    Messages:
    104
    Likes Received:
    0
    Trophy Points:
    0
    I just had to go through this procedure, not to replace the thermostat, but to replace the two short hoses that connect to it. I took the bike out for a spin the other day and parked it in the garage, came back out about two hours later and there was a nice puddle of coolant under the bike.

    I stripped the right side plastics off and discovered it was coming out of a frame hole located under the thermostat. I pulled everything off to find the two shorty hoses looking like Oprah on a fat day, they were really soft and expanded. The end of one of the hoses was nice and wet, so I figured the coolant was getting by the clamp as the hose expanded.

    getting those new hoses(not factory ordered)back on there was a pain in the ass, i got it buttoned back up within 2 hours of starting...all is well :)
     
  8. Rangerscott

    Rangerscott New Member

    Joined:
    May 9, 2007
    Messages:
    426
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Texas
    The coolant hose connecting the two rads on my bike feels soft but I've never felt a new one. The bad is these are thin walled and this hose is long so I think even a new one will still have a soft feel.
     
  9. Davis5g

    Davis5g New Member

    Joined:
    Sep 2, 2010
    Messages:
    624
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Pittsburgh, PA
    I just did my thermostat tonight, well I have to put the throttle bodies back on yet. I didn't even remove the tank or disconnect any fuel lines. I propped the tank up with a piece of wood in the front, swung the throttle bodies out to the side and sat them on top of my shop vac(happened to be the perfect height, and in my garage at the time) The location of the t-stat wouldn't be so bad if they didn't go bad like guacamole sitting in the sun. I hope the new one lasts longer than 13k miles.
     
  10. Alaskan

    Alaskan Member

    Country:
    United States
    Joined:
    Jan 12, 2008
    Messages:
    1,698
    Likes Received:
    4
    Trophy Points:
    53
    Location:
    Alaska
    Map
    Nice! I had a dealer replace my thermostat because I was busy . . . er, I was going out for dinner, and . . ah . . . . I was in a coma at the time. Anyway, it didn't cost very much in shop time, BUT the mechanic pinched lines when replacing the fuel tank. It was a big annoyance. I should have done it myself. Thanks for the pics.
     
  11. records2

    records2 New Member

    Joined:
    Mar 4, 2011
    Messages:
    22
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    vancouver
    I usually slice the hose then pry the screwdriver around the housing. When it corrodes up after many years they bake together. Usually need a new hose anyways since they get hard and it's going in the trash. Wouldn't want to blow one of those hoses in the mountain. Russ

    tech for both chrysler, ford and jaguar 10 years.
     
  12. records2

    records2 New Member

    Joined:
    Mar 4, 2011
    Messages:
    22
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    vancouver
    bad news usually as oil leakage from a head gasket, or oil passage swells coolant hoses from the inside out. Russ

    Quick tip use dishsoap for easier rubber hose installation, does not affect the rubber, spit works good too.
     
  13. Cearbhallain

    Cearbhallain New Member

    Joined:
    Mar 3, 2011
    Messages:
    30
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Lake Elsinore, CA
    The thermostat on my newly acquired 2004 VFR is apparently stuck open. In 75 degree weather the bike isn't getting warmer than 163 degrees. I think that the bike takes too long to heat up. In the parts diagram for the thermostat the part number and nomenclature is 37760-MT2-003 SWITCH, THERMOSTAT. Is this the correct item to order along with 91307-PH7-660 O-RING (13.5X1.4)?
     
  14. HzE

    HzE New Member

    Country:
    Finland
    Joined:
    May 19, 2009
    Messages:
    29
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Espoo
    Map
    I had some temperature problems with my 2002-model. Even in weather around 15°C (59°F. Yes, that's warm here) the engine temperature quickly dropped to 60°C (140°F).

    Thanks to the good instructions provided in the thread, I managed to replace the thermostat. Now during one night I drove home when the temperature outside was +3°C (~37°F) and the engine temperature stayed above 74°C (~165°F).
     
  15. pap11y

    pap11y New Member

    Joined:
    Aug 22, 2010
    Messages:
    367
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Sydney
    Thanks for the excellent post.
     
  16. donald branscom

    donald branscom New Member

    Joined:
    Aug 27, 2009
    Messages:
    1,934
    Likes Received:
    1
    Trophy Points:
    0
    Location:
    Guerneville CA
    Map
    As I have said before it was really stupid of the manufacturers to sandwich the thermostat between the carbs and engine.

    Be glad when they get motorcycle people back in the design dept. instead of computer designers.

    The VF 1000R put the thermostat where it belongs . In a easy to get to location.
     
  17. 02 VFR Rider

    02 VFR Rider New Member

    Joined:
    Jan 29, 2009
    Messages:
    2,286
    Likes Received:
    2
    Trophy Points:
    0


    Agreed, with all the plastic on the bike they could have mounted it in a better spot.

    I have to rip down my 6th gen this weekend to replace mine.
     
  18. donald branscom

    donald branscom New Member

    Joined:
    Aug 27, 2009
    Messages:
    1,934
    Likes Received:
    1
    Trophy Points:
    0
    Location:
    Guerneville CA
    Map
    Sorry to hear about that.

    I have always had this rage fantasy where I create a movie, and in the movie I go find the actual designer or person that made that decision and kidnap them to come actually perform the repair so they can REALLY understand the grief they have cause thousands of people. Of course I have them call home and let people know they are working so the authorities do not go looking for them.
    Just a fantasy.
     
  19. Cearbhallain

    Cearbhallain New Member

    Joined:
    Mar 3, 2011
    Messages:
    30
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Lake Elsinore, CA
    With the thermostat not working on a bike with only 14,600 miles on it makes me think that the thermostat was not really designed/made to last.
     
  20. Cearbhallain

    Cearbhallain New Member

    Joined:
    Mar 3, 2011
    Messages:
    30
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Lake Elsinore, CA
    Mid-90's? 1995?
     
Related Topics

Share This Page