sounds like the throttle cable is stuck or jammed
Error code 37
Hi all
since i changed from the 2003 tmax to the 2006 special i had my RPM's too low when just start cold engine and when engine gets hot
the RPM's go so high almost to 2000 so the scooter can move even when not giving gas i broke my head to understand what's the problem
i checked all the fuel injection system (looks ok) i changed ECU engine control unit assy 5vu-8591a-00 Throttle body assy 5vu-13750-00 and since then the RPM goes crazy reach 3000 and not stable always go down and up.
i was playing with the screw to adjust the RPM's but then error 37 pop up and engine warning light since then i dont know what to do someone have idea how to help i tried to do what the service manual say about error 37 it didnt helped
since i changed from the 2003 tmax to the 2006 special i had my RPM's too low when just start cold engine and when engine gets hot
the RPM's go so high almost to 2000 so the scooter can move even when not giving gas i broke my head to understand what's the problem
i checked all the fuel injection system (looks ok) i changed ECU engine control unit assy 5vu-8591a-00 Throttle body assy 5vu-13750-00 and since then the RPM goes crazy reach 3000 and not stable always go down and up.
i was playing with the screw to adjust the RPM's but then error 37 pop up and engine warning light since then i dont know what to do someone have idea how to help i tried to do what the service manual say about error 37 it didnt helped
1 - 14 of 14 Posts
I just typed a whole page and hit the wrong button and now have to do this again. :roll:
Fault code #37 on a Type III Tmax, is a "stuck Fast Idle Plunger", and the result is high rpm's when it should be idling.
Have you changed the cooling system fluids? The FIP uses the cooling system (heat pulls the pin to the throttle body back) to tell the Fuel Injector throttle body when the engine is either hot or cold, and gives the engine more fuel if it needs it when cold, and none when it's warm. It goes from either being open or closed (I don't know which), when the engine temps are up, and stops giving extra fuel to the engine.
If it's not the cooling system, it's the FIP being stuck keeping the extra fuel going to the engine, and needs to be replaced. Get the O-ring too if you have to get a new one.
It could be a broken throttle cable, but I don't know if it would give you the code #37 as a result. That sort of information is what's needed here in a "Tmax Service Problems/Questions" section. But I doubt if the hosts will ever add one for us.
Fault code #37 on a Type III Tmax, is a "stuck Fast Idle Plunger", and the result is high rpm's when it should be idling.
Have you changed the cooling system fluids? The FIP uses the cooling system (heat pulls the pin to the throttle body back) to tell the Fuel Injector throttle body when the engine is either hot or cold, and gives the engine more fuel if it needs it when cold, and none when it's warm. It goes from either being open or closed (I don't know which), when the engine temps are up, and stops giving extra fuel to the engine.
If it's not the cooling system, it's the FIP being stuck keeping the extra fuel going to the engine, and needs to be replaced. Get the O-ring too if you have to get a new one.
It could be a broken throttle cable, but I don't know if it would give you the code #37 as a result. That sort of information is what's needed here in a "Tmax Service Problems/Questions" section. But I doubt if the hosts will ever add one for us.
Fast Idle Plunger is a common thing with all fuel injected vehicles, if you can locate it and remove the plunger clean it and the bore housing with carbie cleaner (pressure pack can) this will usually work unless the bore/plunger is worn and sticking on a wear lip (unusual)
Greg
Greg
Thanks guys for such a fast answers :thumbright: :thumbright: :thumbright: :thumbright:bigwheelsturning said:I just typed a whole page and hit the wrong button and now have to do this again. :roll:
Fault code #37 on a Type III Tmax, is a "stuck Fast Idle Plunger", and the result is high rpm's when it should be idling.
Have you changed the cooling system fluids? The FIP uses the cooling system (heat pulls the pin to the throttle body back) to tell the Fuel Injector throttle body when the engine is either hot or cold, and gives the engine more fuel if it needs it when cold, and none when it's warm. It goes from either being open or closed (I don't know which), when the engine temps are up, and stops giving extra fuel to the engine.
If it's not the cooling system, it's the FIP being stuck keeping the extra fuel going to the engine, and needs to be replaced. Get the O-ring too if you have to get a new one.
It could be a broken throttle cable, but I don't know if it would give you the code #37 as a result. That sort of information is what's needed here in a "Tmax Service Problems/Questions" section. But I doubt if the hosts will ever add one for us.
i will try to do what you say just English is not my native language so sometimes its hard for me to understand what is FIP O-ring and this kind of things i will very appreciate if you tell me part numbers from the parts catalog .
im stuck here i need to do it alone because im living in china now and there is no official dealer or garage seems they dont understand nothing about big bikes specially the one made not in china the law here dosent allow bikes bigger than 250cc they exist here but fix them is very hard
p.s
yes i changed the cooling liquid i was thinking maybe its the sensor problem
Cheers
If you changed the water in the cooling system, did you let the engine run with the cooling system "pressure cap" off until the "thermostat" opened, and you could see water flowing in the "filler tube" (under the pressure cap). You want the system to run that way a while at idle, so all the "air" in the system is plurged, and only water remains in the cooling system. Turn off the engine, and put the pressure cap back on. Don't let the cooling water get too hot, and have it boil over.
My parts manual only shows that the Fast Idle Plunger is a part of the throttle body, and only has one part number for the whole thing.
Ref# 1 Throttle Body Assy 4B5-13750-10-00
My service manual shows the Fast Idle Plunger (FIP) as a separate part with O-ring, but not in my parts manual. But both of them are for the 09 Type III Tmax.
Hope this helps. I will see if I can find something online.
Remove the cover panels so you can see if the throttle cam in the injector body actually moves in both directions when you open and close the throttle with the RH grip.
My parts manual only shows that the Fast Idle Plunger is a part of the throttle body, and only has one part number for the whole thing.
Ref# 1 Throttle Body Assy 4B5-13750-10-00
My service manual shows the Fast Idle Plunger (FIP) as a separate part with O-ring, but not in my parts manual. But both of them are for the 09 Type III Tmax.
Hope this helps. I will see if I can find something online.
Remove the cover panels so you can see if the throttle cam in the injector body actually moves in both directions when you open and close the throttle with the RH grip.
bigwheelsturning thank you didnt had time yet to try after new year i will try,happy new year!!!
:drunken: :drunken: :drunken:
:drunken: :drunken: :drunken:
快乐新的一年，我希望你找到修复您的最高温度。
BWT
BWT
Translation: What he said was:
Happy new year, I hope you find to repair your highest temperature. BWT
Happy new year, I hope you find to repair your highest temperature. BWT
The first parts correct, but the last part got "Lost in Translation" :wink:Garth said:Translation: What he said was:
Happy new year, I hope you find to repair your highest temperature. BWT
Cheers anyway i got the idea thanks , and i cant read Chinese also lol.bigwheelsturning said:The first parts correct, but the last part got "Lost in Translation" :wink:Garth said:Translation: What he said was:
Happy new year, I hope you find to repair your highest temperature. BWT
The problem is solved now seems The cooling liquid was trapped it didnt flow in and out that was causing this problem.
for now works just fine when the engine is cold the RPM's is higher and when engine getting warmer the RPM's going down .
i had another question in my previous TMAX 03 how should i say it when i was riding and on the ground was some stones or some not flat surface
the feeling to me wasnt so ruff and i had confidece to ride over this kind of things but on this tmax even small bumps feels so hard (ofcorse i checked the air pressure in the wheels) maybe its the suspensions need adjusting or also need change to some other type notice i already changed suspension oil cheers @bigwheelsturning like you vids on youtube
Glad to see that "it was" an air bubble in the cooling system at the Fast Idle Plunger that was causing the trouble. When you change out the cooling fluids on any car, truck, or scoot, you have to let the thermostat open so the water can flow through the system for a minute or so to get rid of trapped air.
My 09 Tmax is a rough ride on a cobbly surface too.
My 09 Tmax is a rough ride on a cobbly surface too.
before i was riding 2003 and it was riding like a dream not effected by any bumps on the road , is there some change can do to make the suspensions more soft because on speed it kind of scarey when you have small bump and you almost been trowed :bounce: form your sit maybe change to other suspension or adjusting i never find some info about that online :bounce:bigwheelsturning said:Glad to see that "it was" an air bubble in the cooling system at the Fast Idle Plunger that was causing the trouble. When you change out the cooling fluids on any car, truck, or scoot, you have to let the thermostat open so the water can flow through the system for a minute or so to get rid of trapped air.
My 09 Tmax is a rough ride on a cobbly surface too.
i really appreciate your help!!!
I have the same problem, sometimes it happens others not. When it happens I stop the engine and I'm sure that error 37 appears, I start the engine again waiting for a few seconds, I have to tell that the engine dont start at once, its hard a bit to ignite the spark I insist on and the engine start again. In error 37 the rpm is around 1800 to 2000. After that trick I mentioned above the rpm goes normal again as it should be, 1500rpm.If you changed the water in the cooling system, did you let the engine run with the cooling system "pressure cap" off until the "thermostat" opened, and you could see water flowing in the "filler tube" (under the pressure cap). You want the system to run that way a while at idle, so all the "air" in the system is plurged, and only water remains in the cooling system. Turn off the engine, and put the pressure cap back on. Don't let the cooling water get too hot, and have it boil over. My parts manual only shows that the Fast Idle Plunger is a part of the throttle body, and only has one part number for the whole thing. Ref# 1 Throttle Body Assy 4B5-13750-10-00 My service manual shows the Fast Idle Plunger (FIP) as a separate part with O-ring, but not in my parts manual. But both of them are for the 09 Type III Tmax. Hope this helps. I will see if I can find something online. Remove the cover panels so you can see if the throttle cam in the injector body actually moves in both directions when you open and close the throttle with the RH grip.
1 - 14 of 14 Posts
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