Triumphrat

ncdave · 11-15-2009, 03:06 PM

My 01 tt600 now has the check engine light on. it's just over 20k miles on the clock and otherwise, runs just fine. Anyone have any thoughts as to how to check things, or what to look at? My only other option is to take it to the dealer to check codes.

I have already removed the battery and re-set it. It stayed off for a very short time, but then came back on.

BombFactory · 11-15-2009, 09:47 PM

There are so many possible error codes that it would be worth the time to have the code read. Since it came back on after clearing it, it wasn't a fluke issue.

GNTurbo6 · 11-16-2009, 04:10 AM

As far as I know, any old OBD-II reader will pull the codes and tell you what the issue is. I've had a CEL for the IAC before but that went away on its own. Also had codes for bad ignitions but they never came back after I cleared them, figure it popped up from a backfire.

ncdave · 11-16-2009, 09:53 AM

Just like a car, huh.

Any thoughts that rain in the intake could cause something?

ncdave · 11-17-2009, 10:32 AM

Quote:

Originally Posted by GNTurbo6

As far as I know, any old OBD-II reader will pull the codes and tell you what the issue is. I've had a CEL for the IAC before but that went away on its own. Also had codes for bad ignitions but they never came back after I cleared them, figure it popped up from a backfire.

How did you clear the codes?

I think my problem resulted from water through the air intake. My son was riding in a heavy rain, and there are signs on the air filter of water soaking. At the moment, I'm thinking that's what the light is about. Now I need to clear things so that I can run it some and see, but can't get the light out.

By the way...has anyone pulled the crankcase breather out of the air intake and put a separate breather filter on it?

BombFactory · 11-17-2009, 01:46 PM

Quote:

Originally Posted by ncdave

How did you clear the codes?

I think my problem resulted from water through the air intake. My son was riding in a heavy rain, and there are signs on the air filter of water soaking. At the moment, I'm thinking that's what the light is about. Now I need to clear things so that I can run it some and see, but can't get the light out.

By the way...has anyone pulled the crankcase breather out of the air intake and put a separate breather filter on it?

There is no need to clear the code. These motorcycles are not like cars; they do not have a "limp" mode that results in poor gas mileage/performance when the MIL is lit. If water in the intake somehow gave a faulty air-temp reading that triggered the MIL, it should go out in three heat cycles. To put it plainly, from cold, heat the engine up to running temp three times. If it was just a fluke problem, the MIL will clear then. If it doesn't, you have a constant problem.

As for the breather, yes, if you search the forum for breather threads you will see that some people have put an external breather on the end of the hose rather than feeding it into the airbox. However, I still can't understand why anyone would do it. If the centrifugal breather and its seal are working properly, there is no negative affect of running the breather into the airbox.

I think people have done it due to oil getting in the airbox. If you are getting excess oil in the airbox, you need to replace the centrifugal breather seal and possibly the breather. If there is excess oil, adding an external breather will only eventually result in your engine and motorcycle being covered in oil mist, as it does not fix the main problem.

GNTurbo6 · 11-17-2009, 02:55 PM

Quote:

Originally Posted by ncdave

How did you clear the codes?

I think my problem resulted from water through the air intake. My son was riding in a heavy rain, and there are signs on the air filter of water soaking. At the moment, I'm thinking that's what the light is about. Now I need to clear things so that I can run it some and see, but can't get the light out.

By the way...has anyone pulled the crankcase breather out of the air intake and put a separate breather filter on it?

My friend's OBD-II reader has a clear codes button on it

ncdave · 11-17-2009, 06:04 PM

Quote:

Originally Posted by BombFactory

There is no need to clear the code. These motorcycles are not like cars; they do not have a "limp" mode that results in poor gas mileage/performance when the MIL is lit. If water in the intake somehow gave a faulty air-temp reading that triggered the MIL, it should go out in three heat cycles. To put it plainly, from cold, heat the engine up to running temp three times. If it was just a fluke problem, the MIL will clear then. If it doesn't, you have a constant problem.

As for the breather, yes, if you search the forum for breather threads you will see that some people have put an external breather on the end of the hose rather than feeding it into the airbox. However, I still can't understand why anyone would do it. If the centrifugal breather and its seal are working properly, there is no negative affect of running the breather into the airbox.

I think people have done it due to oil getting in the airbox. If you are getting excess oil in the airbox, you need to replace the centrifugal breather seal and possibly the breather. If there is excess oil, adding an external breather will only eventually result in your engine and motorcycle being covered in oil mist, as it does not fix the main problem.

The trumpet is a bit different than other bikes I've owned and done this to as it has the centribugal breather on it. I have done it on other bikes as I don't want oil fumes contaminating the fresh air into the cylinders. As bikes age, more oil circulating through the cylinders eventually causes more problems. It's a long-term thing though, not an immediate one. I don't have a lot of facts around it, just what I've read and heard over the years from various sources.

ncdave · 11-24-2009, 09:20 AM

Well, after running the bike a few times, the light is now off. I'm suspecting it was rain water getting into the intake and getting the filter wet. I'll replace that and keep an eye on it.

anyone else rode in the rain and had similar experience?

showmetheway428 · 11-25-2009, 01:36 PM

I'd guess it's probably something electrical rather than mechanical if you didn't feel like there were any problems. You can buy a basic handheld OBDII reader for about $80 that will read the entire code history and also be able to clear it all. The codes can be found in a service manual for the TT600 or S4.

Since it can be used on all of your cars too it really pays for itself pretty quickly. Lots of people go crazy taking things apart and replacing everything under the sun when it's actually something quite simple.