Re: [ST] 2005 Sprint ST Idle problem

["Mark Marr-Lyon" <mark.marrlyon@xxxxxxxxx>]

Code P1105 is "Manifold absolute pressure sensor pipe malfunction.
The manual suggests that you "check connection/condition of pipe from
MAP sensor to throttle body."  The MAP sensor is attached to the top
of the airbox and has a hose running to the intake manifold, which I
think you'll find is disconnected.  The big vacuum leak is causing it
to not idle, and the MAP sensor reading atmospheric pressure is
setting the code.

My K&N doesn't fit all that well either, but it runs fine.  The back
edge should be straight, but it is curved.  By tightening the screws
from the front I got the back tab to mostly line up with the hole, so
I think it's fitting ok but it's a little disappointing.  The shop I
got it from said that the first K&N filters fit well but the later
ones don't, so it sounds like a pretty widespread problem.

Mark

On 4/1/07, David Fritz <dmfritz@xxxxxxxxxxx> wrote:
> I have a 2005 Sprint ST that I purchased used.  Initially the bike ran great and then it started to have trouble starting.  Changed the plugs and air filter (K&N TB-1005) ; now the bike will not hold idle.  The error code from tuneboy is P1105.  I have downloaded the latest tune and the issue persists.  The K&N air filter does not seat properly but fit into the airbox.  I have ordered a new Triumph filter but have to wait a week until it comes in.  Has anyone else had this issue with idle or K&N filters not fitting?
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