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Thread: Over heating

  1. #1
    Member John Moody's Avatar
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    Default Over heating

    I have a 2014 RT Limited with 40k plus miles. Highway driving temperature gauge reads normal (just below halfway mark), but when I drive below 35 mph my reverse fan kicked in (minute or 2 later) and temperature gauge goes very high when driving fast again (highway speed) temperature goes back to normal. Dealership hook to the computer and said the water pump is working ok and when they raising rpm above 1400 temperature goes back to normal. Radiator fluid level is ok. Not sure what to do to correct the problem. Dealership is going to flush the radiator and add fresh fluid, but not sure if this will correct the problem. Need help please I missing my ride the last few days.
    Last edited by Peter Aawen; 05-26-2019 at 04:07 AM. Reason: Deleted spaces & odd keystrokes that extended post over 2 pages!

  2. #2
    Ozzie Ozzie Ozzie Peter Aawen's Avatar
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    If your Spyder was a 4WD or diesel truck I'd be suggesting the viscous coupler for the fan wasn't working properly, so the engine cools well enough when you've got a fair amount of airflow, which is usually only at speed with little load, but it runs hot whenever it has very little airflow volume when you're travelling slow because the fan is just not doing all that it should be doing!!

    But this is a Spyder, with thermostat activated electric fans.... so maybe the fans aren't doing what they should, or maybe the ducting leading air flow to the radiators down the sides of the frunk are at least partially blocked?!?

    Maybe you should pull the front grilles & check that all ducting down the sides of the frunk are clean & not partially blocked with dust, mud, grass seeds etc or something along those lines before doing anything else; and if all that ducting's not blocked at least some, then I reckon it's gotta be time to check out the fans & their operation to make sure they are cutting in and running as & when & as hard as they should?!?

    And if it's not either of those, it's probably time to check the thermostat for proper opening & closing at approp temps; then if it's still not sorted, pull the rads out, backflush the whole cooling system & clean the rad cores & fins inside & out; and if it's still doing the wrong thing, then maybe it's time to start looking elsewhere?!?

    Good Luck!
    Last edited by Peter Aawen; 05-26-2019 at 04:27 AM.
    2013 RT Ltd

  3. #3
    Very Active Member Freddy's Avatar
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    Yeah, good luck with all that John
    The best substitute for brains is....................what?

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    Very Active Member Highwayman2013's Avatar
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    The radiators can get a bunch of debris stuck in the fins, check that out first.
    2012 RT Limited (Traded)
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  5. #5
    Very Active Member BLUEKNIGHT911's Avatar
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    Quote Originally Posted by John Moody View Post
    I have a 2014 RT Limited with 40k plus miles. Highway driving temperature gauge reads normal (just below halfway mark), but when I drive below 35 mph my reverse fan kicked in (minute or 2 later) and temperature gauge goes very high when driving fast again (highway speed) temperature goes back to normal. Dealership hook to the computer and said the water pump is working ok and when they raising rpm above 1400 temperature goes back to normal. Radiator fluid level is ok. Not sure what to do to correct the problem. Dealership is going to flush the radiator and add fresh fluid, but not sure if this will correct the problem. Need help please I missing my ride the last few days.
    I have the same Spyder you have with the same mileage …. I still have the same anti-freeze as when delivered …. the only time my Fans go into reverse is if I'm sitting and idling …. If you still have the orig. anti-freeze it won't be a waste of money having the flush and re-place done …. but I think that dealer is Guessing about the fix ( and making money from it ) ….. Since you have the SE trans, you can't be lugging it and therefore straining the system..... I re-moved my OEM grills and have ones that can be completely removed for cleaning the fins … You can do it by removing the Frunk for access. Another thing to check is - is the cap on CORRECTLY - the system needs to be pressurized to work correctly …. good luck … Mike

  6. #6
    Very Active Member Chupaca's Avatar
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    Default Have to agree....

    Start with cleaning the grills and radiator fins for better flow as if it has not been done for 40,000 miles it has build up. Now if the reverse fans are coming on at the wrong time it would be time to check that system as they were designed to remove heat from the engine compartment when in a slow or stopped condition. Let us know what you find....
    Gene and Ilana De Laney
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    If the fans are running on reverse at any speed above about 5 MPH......then they are resisting the proper flow of air and effectively causing NO FLOW of air across the radiator.

    Before you spend any money on anything else, that MUST be fixed first.
    My ride: '17 Spyder RT

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    If this were a car, all indications would be a faulty, sticking thermostat. They do go bad occasionally. Not an expensive part to replace.

  9. #9
    Member John Moody's Avatar
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    bike stall in the shop dealer may get to it next week. They going to flush the radiator and add fresh fluid. I hope this will correct the problem and I ask about the thermostat. Been 3 week without riding, hopefully I remember
    how to ride

  10. #10
    Very Active Member canamjhb's Avatar
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    If it is a thermostat, know that this is NOT an inexpensive fix. The thermostat and water pump are both one unit. My bike is in the shop now for a stuck thermostat and the dealer quoted me close to 1K for repair except mine is being covered by warranty. Another engineering genius from BRP..... Jim
    Platinum Silver Satin 2014 RTL, Driver Backrest. Baha Ron Bar, Elka Shocks, Hiway pegs, Lighted Bump Skid, Centramatic Wheel Balancers, Wide Vu Mirrors, Third Tail/Brake light, Missing Belt Guard, Federal Formoza front and General Altimax rear tires, Squared Away, Mirror turn signals, Vibration Damper, Magnetic Mirrors, Matching RT622 Trailer.....Semper Fi....

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  11. #11
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    Quote Originally Posted by John Moody View Post
    bike stall in the shop dealer may get to it next week. They going to flush the radiator and add fresh fluid. I hope this will correct the problem and I ask about the thermostat. Been 3 week without riding, hopefully I remember
    how to ride
    It will NOT fix any problem.......as long as the fans are running the WRONG WAY AT LOW SPEEDS.

    IF.... what you said is really true, you MUST point that out to the shop.......or this is going to be a very costly and frustrating experience.

    Quote Originally Posted by John Moody View Post
    but when I drive below 35 mph my reverse fan kicked in
    My ride: '17 Spyder RT

  12. #12
    Very Active Member BLUEKNIGHT911's Avatar
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    Quote Originally Posted by John Moody View Post
    bike stall in the shop dealer may get to it next week. They going to flush the radiator and add fresh fluid. I hope this will correct the problem and I ask about the thermostat. Been 3 week without riding, hopefully I remember
    how to ride
    " flush & replace coolant " …… IMHO if this fixes your issue …. you will have been the recipient of a Miracle ……………...good luck ….. Mike

  13. #13
    SpyderLovers Sponsor SpyderAnn01's Avatar
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    My radiators on my 14RT were replaced when they did the same thing. I had had two cases of it overheating once in Alaska and the other in Quebec, the common denominator was we had ridden on dirt/mud roads in rain. My fins were caked with mud so no air was flowing. BRP replaced them under extended warranty while we were at the 10th Anniversary in Valcourt.

    2017 F3T-SM6 Squared Away Mirror Wedgies & Alignment
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  14. #14
    Member John Moody's Avatar
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    Finally got my spyder back yesterday after replacing the water pump. took her on a 250 miles road trip Saturday with no overheating problem.

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