Thermostat? Cornfused.
#1
Thermostat? Cornfused.
Ok so heres the deal the bike runs great up until it gets about 190, then it starts running like crap and wants to die. Its not like it bogs and starts hopping around or anything, just when I pull the clutch in the idle will drop. I can't adjust the idle it will either be a little over 1K or like 4-4.5K. Before the bike has been running for a bit I can adjust it how ever I want. Whats weird is the bike seems to run cooler when on the road like 159* crusing and lastnight was 149* all the way home(30 min. ride). Just once it gets to about 190 when I'm in the lot it starts acting weird. Could it be the thermostat maybe? Could it be the fact that the coolant is probably 90% water after topping it so many times this year? Any ideas anyone? Just weird how it doesn't want to hold idle.
#2
also known as OMR
Join Date: Jul 2006
Location: OMR INDUSTRIES in west palm beach florida
Posts: 79,288
Re: Thermostat? Cornfused.
if it's staying at 150 for a long time when you are riding then the thermostat might be stuck open but i dont know if that has any thing to do with how it's running ...
03 had a recall on the coils do you know if that bike has been in for the recall ?
03 had a recall on the coils do you know if that bike has been in for the recall ?
#3
Re: Thermostat? Cornfused.
With that much water there could be corrosion in the system, have you checked the coolant to see if it still looks good?
It does sound like your thermostat might be stuck open, or opening at a lower temperature, they can rust out especially if theres mostly water in the system and break, making them stay open
But it should still run fine when its at running temperature, hell it should still run almost perfect at 150f...
My f4i runs great even at 120f after just starting my bike, but I never really push it hard tell 160+
It does sound like your thermostat might be stuck open, or opening at a lower temperature, they can rust out especially if theres mostly water in the system and break, making them stay open
But it should still run fine when its at running temperature, hell it should still run almost perfect at 150f...
My f4i runs great even at 120f after just starting my bike, but I never really push it hard tell 160+
#4
Re: Thermostat? Cornfused.
With that much water there could be corrosion in the system, have you checked the coolant to see if it still looks good?
It does sound like your thermostat might be stuck open, or opening at a lower temperature, they can rust out especially if theres mostly water in the system and break, making them stay open
But it should still run fine when its at running temperature, hell it should still run almost perfect at 150f...
My f4i runs great even at 120f after just starting my bike, but I never really push it hard tell 160+
It does sound like your thermostat might be stuck open, or opening at a lower temperature, they can rust out especially if theres mostly water in the system and break, making them stay open
But it should still run fine when its at running temperature, hell it should still run almost perfect at 150f...
My f4i runs great even at 120f after just starting my bike, but I never really push it hard tell 160+
It's weird because it's like the only thing it does is prevent the bike from idling correct. When the bike is first started and up until it reaches about 190 it runs perfect. As soon as it starts to get up there the idle just won't stay up it will go from 2.8-3K to about 1.2K then if I try to adjust it back up it won't want to go. Then when it does raise the idle it takes it up to about 4K. If I get it to level back out around 3K if I rev it up the the bike doesn't drop RPMS like it should. I can rev it a little and it will hang around 4K before dropping slowly. The throttle tube isn't getting stuck either, when that happens I have the throttle closed all the way. I'm lost on this one. Guess instead of practicing today I will have to try and figure out what the hell is going on. Probably go a head and give the radiator a good flush and then refill with some actual coolant and see if that helps. If not then I guess I will switch out the thermostat with my brother in-laws from his 05 to see if that works.
If you guys have any ideas keep them coming please. If I figure it out later I'll be sure to post up what it was.
#6
Re: Thermostat? Cornfused.
Atleast I think it's fine. There is no oil in the radiator, there is no oil or water coming from the engine. only place water leaks is out the overflow when it's hot.
#8
Re: Thermostat? Cornfused.
you have a power commander?? when the r6 is at running temp they run diffrent than when they are warming up. it has to do with the computer and its to much to type which is why the coolant runs into the throttle bodies
#10
Re: Thermostat? Cornfused.
Nope. All stock besides a K&N filter but that has been there the whole time and was cleaned not too long ago. Well besides having done the kleen air and all the stunt parts.
#11
Re: Thermostat? Cornfused.
the coolant shouldn't be overflowing at anything under 240-250ish at the least
OMR could be right, it could be the head gasket, and pressure could be getting from your cylinder into your coolant
coolant and oil wont always mix when the head gasket goes, sometimes pressure just escapes the cylinder into either your coolant, then that causes your coolant to puke out
OMR could be right, it could be the head gasket, and pressure could be getting from your cylinder into your coolant
coolant and oil wont always mix when the head gasket goes, sometimes pressure just escapes the cylinder into either your coolant, then that causes your coolant to puke out
#12
also known as OMR
Join Date: Jul 2006
Location: OMR INDUSTRIES in west palm beach florida
Posts: 79,288
Re: Thermostat? Cornfused.
the coolant shouldn't be overflowing at anything under 240-250ish at the least
OMR could be right, it could be the head gasket, and pressure could be getting from your cylinder into your coolant
coolant and oil wont always mix when the head gasket goes, sometimes pressure just escapes the cylinder into either your coolant, then that causes your coolant to puke out
OMR could be right, it could be the head gasket, and pressure could be getting from your cylinder into your coolant
coolant and oil wont always mix when the head gasket goes, sometimes pressure just escapes the cylinder into either your coolant, then that causes your coolant to puke out
now going in the other direction if the caps bad and doesnt allow pressure to escape the cooling system it can force water into the combustion chamber and we all know water doesnt burn and that could cause it to run bad when it gets hot and builds pressure in the cooling system ..
#13
Re: Thermostat? Cornfused.
the coolant shouldn't be overflowing at anything under 240-250ish at the least
OMR could be right, it could be the head gasket, and pressure could be getting from your cylinder into your coolant
coolant and oil wont always mix when the head gasket goes, sometimes pressure just escapes the cylinder into either your coolant, then that causes your coolant to puke out
OMR could be right, it could be the head gasket, and pressure could be getting from your cylinder into your coolant
coolant and oil wont always mix when the head gasket goes, sometimes pressure just escapes the cylinder into either your coolant, then that causes your coolant to puke out
#15
Re: Thermostat? Cornfused.
Nope no coolant in the exhaust. I think I possibly found the culprit though. I was thinking maybe my TPS has finally taken a **** on me. The bike is old and I figured that would affect the idle because it appears the computer still uses TPS to factor in idle. So i put the bike in DIAG mode and check the TPS signal. My TPS is reading 15-85. Spec in the manual says it should be showing 15-17 with the throttle closed and 97-100 with the throttle open. So I'm thinking that's my problem. I tried flushing the coolant and replaced it and swapped thermostats. It was getting late so I didn't swap the TPS sensors out to verify. I will do that tomorrow and if the one off my brother in-laws '05 fixes it I will be ordering a new one.
#16
Re: Thermostat? Cornfused.
It does sound like your thermostat might be stuck open, or opening at a lower temperature, they can rust out especially if theres mostly water in the system and break, making them stay open
But it should still run fine when its at running temperature, hell it should still run almost perfect at 150f.
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But it should still run fine when its at running temperature, hell it should still run almost perfect at 150f.
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#17
Re: Thermostat? Cornfused.
It does sound like your thermostat might be stuck open, or opening at a lower temperature, they can rust out especially if theres mostly water in the system and break, making them stay open
But it should still run fine when its at running temperature, hell it should still run almost perfect at 150f.
But it should still run fine when its at running temperature, hell it should still run almost perfect at 150f.
#19
#20
Re: Thermostat? Cornfused.
Alright update guys. I think I figured it out. You guys might find it a little amusing. So i swapped out the TPS from the '05 into the '03 and it read poorly too, So I checked my TPS on the '05 and it showed it was good. So I thought hmm, so I played with the TPS on my bike a little longer. I noticed the numbers weren't consistent. If I held the throttle open it would stay 82-86 then sometimes spike up to 96-98. Then it got to were it would go to 98 every time but when I would drop the throttle it would stop at 20 for a second then slowly go back to 15-17. So I was about to try and swap the ECUs just to see if the TPS would then read correctly. I take my seat off and look at the ECU.... Hmmm that connector doesn't look like it's seated all the way. I pushed it in more (barely anything) and went back to DIAG mode and Hell muthafcuking yea 17-97 consistently. No more jumping around. Apparently when my bike was stolen the 1st time someone broke the tab on the plug and so now I'm going to have to zip tie that sucker in place. I guess sitting the stoppies down was jarring it loose more, because now that I really think about it the bike would start to act up after I had been practicing stoppies. I didn't think to put two and two together. I'm glad it was a free fix.:YEA
Oh, and those numbers, encase you are confused and wondering what they are. They are the values displayed on the cluster in diagnostic mode for the throttle position.
Oh, and those numbers, encase you are confused and wondering what they are. They are the values displayed on the cluster in diagnostic mode for the throttle position.
Last edited by ~03~raven; 05-26-2010 at 08:09 PM.