G oog le BadWeB | Login/out | Topics | Search | Custodians | Register | Edit Profile

Buell Forum » XBoard » Buell XBoard Archives » Archive through August 31, 2006 » Engine code 15.... « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

Reducati
Posted on Sunday, August 27, 2006 - 12:48 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

in the last 500 miles, check engine light came on for no more than 2- to-4 seconds, while riding..this has happened 3 times in the last couple of weeks....i did a check, and it s code 15, the air intake temp sensor....my question is is this something i need to be concerned about? is it gonna strand me somewhere? i actually had the air intake sensor replaced about 3 months ago, but at that time the engine light stayed on. thanks, dan
Top of pagePrevious messageNext messageBottom of page Link to this message

Glitch
Posted on Sunday, August 27, 2006 - 05:34 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

is this something i need to be concerned about?
It would concern me.
is it gonna strand me somewhere?
Quite possibly
had the air intake sensor replaced about 3 months ago
Take off your air box and check the connection.
The DDFI needs the information to keep the bike running smoothly.
It may not make a big difference now, but when the air temp changes your bike will most probably run poorly.
Of course I retain the right to be totally off base.
I will on short order be corrected if I'm wrong.
Top of pagePrevious messageNext messageBottom of page Link to this message

Reducati
Posted on Sunday, August 27, 2006 - 05:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Glitch, do you have a pic of what the sensor looks like? is it right under the air box? thanks in advance. dan
Top of pagePrevious messageNext messageBottom of page Link to this message

Skully
Posted on Sunday, August 27, 2006 - 06:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

When you remove the four screws that hold the air box cover on, then "pop" the tabs that hold the air box lid on, you will see an odd little device at the rear of the air box.

It protrudes into the airbox from underneath. The electrical connection is there also.

Keith
Top of pagePrevious messageNext messageBottom of page Link to this message

Glitch
Posted on Sunday, August 27, 2006 - 09:22 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Top of pagePrevious messageNext messageBottom of page Link to this message

Roadrage
Posted on Monday, August 28, 2006 - 01:49 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Sorry Glitch, but I have to disagree.

I do not believe the air intake temp sensor could possibly strand you at all (but I'm no infallible either, I could be wrong).

A fuel injection system calculates required fuel from the mass of air measured into the engine at an assumed standard temperature. The temp sensor then adds a correction factor to compensate for density changes as a result of the temperature being different from standard.

Should the temp sensor fail, the system will revert to using standard values. System might run a bit lean or rich if temp is unusually hot or cold, but it should still run.

Still needs to be fixed though. I would disconnect the temp sensor, clean connection, reconnect and continue riding for troubleshooting.
Top of pagePrevious messageNext messageBottom of page Link to this message

Reducati
Posted on Monday, August 28, 2006 - 08:35 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

thanks, road, i will try cleaning it.
Top of pagePrevious messageNext messageBottom of page Link to this message

Exitlandrew
Posted on Tuesday, August 29, 2006 - 12:03 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I had the same code, turned out to just be dirty. Some oil in the airbox, fairly common problem. Clean the sensor and invest in a catch can. I still dont have the catch can, but its next on my list. Since I cleaned the sensor Ive had no problems, and my milage went up a bit.
Top of pagePrevious messageNext messageBottom of page Link to this message

Ikeman
Posted on Tuesday, August 29, 2006 - 12:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Roadrage,

I agree and disagree:

Agree that a bad temp sensor probably won't strand you but the bike may not run optimally.

Disagree on measuring the incoming air since the Buell FI system doesn't have a mass airflow sensor. That was one of my comments on a thread awhile back about intake/exhaust mods resulting in lean running, poor idling, etc.

I've had turbocharged cars that were plug and play as far as intake, turbine and exhaust mods (up to a point when either the fuel pump or injectors couldn't keep up). The biggest difference in the FI systems on those cars and my Uly - mass airflow sensor.

Just my 2 pennies...
Top of pagePrevious messageNext messageBottom of page Link to this message

Roadrage
Posted on Tuesday, August 29, 2006 - 08:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Ikeman,

No, we agree completely.

My statement was generic to fuel injection systems in general.

They all measure air somehow, the Buell does it in a rather round about way, assuming a mass of air given throttle position and RPM. Hence we have to modify our ECM's when that airflow changes (air cleaner and pipe mods).

Perhaps should have said estimates air mass instead of measures.

A mass airflow sensor would be a great addition on bikes, suspect it's their size that keeps them away.
Top of pagePrevious messageNext messageBottom of page Link to this message

Ikeman
Posted on Wednesday, August 30, 2006 - 09:42 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Roadrage,

Cool, just read your post a little too literally. I would think cost is probably a factor, too. Size-wise I would think the massive airbox on the Buells would allow even an automotive type MAF. But what do I know, I'm no engineer...
« Previous Next »

Add Your Message Here
Post:
Bold text Italics Underline Create a hyperlink Insert a clipart image

Username: Posting Information:
This is a public posting area. Enter your username and password if you have an account. Otherwise, enter your full name as your username and leave the password blank. Your e-mail address is optional.
Password:
E-mail:
Options: Post as "Anonymous" (Valid reason required. Abusers will be exposed. If unsure, ask.)
Enable HTML code in message
Automatically activate URLs in message
Action:

Topics | Last Day | Tree View | Search | User List | Help/Instructions | Rules | Program Credits Administration