2003 636 Idle Problem

[Twite]

Originally Posted by Diesel_Stunts

In theory you would need a new flash or map, same thing. How does it start after it kills its self when your romping on it and pull the clutch in? If it starts hard, it could be loading up on fuel and just flooding out?

EDIT: Maybe check your Coolant temp sensor also?

Very easy to start, no matter how many times it dies.

Originally Posted by J Blox

And with the tune thing. If u only did a mild port and polish you are just changing how air
Flows and making it more efficient. Unless u went really overboard and bigger valves I doubt your tune would be that far off.

What I was thinking too.....this is such a drastic problem it leads me to believe something serious is out of whack.

[J Blox]

Seems like it has to be spark or fuel...


any timing issues would cause it to not want to start...

you changed airboxs? can't remember if the 03/04 has the secondary injectors there..

[Petarded]

Originally Posted by J Blox

you changed airboxs? can't remember if the 03/04 has the secondary injectors there..

Originally Posted by Twite

Things I have replaced, changed, adjusted:

- Head has been freshly ported and polished, valves adjusted and
timed properly. New timing chain and guides.
- Today I double checked valve clearances and timing.
- 3 different throttle bodies, and 3 different sets of TB sensors.
- throttle body seats (connecting pieces between TB and head)
- Spark plugs
- Coils
- Valve cover (trying anything!)
- Wiring harness
- Battery
- ECU
- Stator
- Went through all grounds confirming good connection.
- airbox
- 2 different exhaust cans (one stock)
- cam chain tensioners (stock and manual)
- fuel pumps
- cam position sensor


Thoughts?

I asked him about this yesterday as I had clogged airbox injectors in my 05... he had checked and swapped that with no luck also...

[Twite]

Originally Posted by J Blox

Seems like it has to be spark or fuel...


any timing issues would cause it to not want to start...

you changed airboxs? can't remember if the 03/04 has the secondary injectors there..

I'm still leaning towards a vacuum or Throttle Position Sensor problem.....even though I've tried 3 sets!
Perhaps I will sneak over to Rowdy's and pirate some parts off his bike!!

[~03~raven]

Yea I would think TPS too. Or maybe something got snaged on the subharness the connects the TPS to the main harness or a short in the main harness?

[Petarded]

Originally Posted by Twite

I'm still leaning towards a vacuum or Throttle Position Sensor problem.....even though I've tried 3 sets!
Perhaps I will sneak over to Rowdy's and pirate some parts off his bike!!

Sounds like a good ideyaaaar

[loogie]

Mine did same thing when I forgot to plug the TPS into the harness

[Twite]

Originally Posted by ~03~raven

Yea I would think TPS too. Or maybe something got snaged on the subharness the connects the TPS to the main harness or a short in the main harness?

Also logical...but I've tried a different harness and sub-harness.

[~03~raven]

Originally Posted by Twite

Also logical...but I've tried a different harness and sub-harness.

Do you still have any of the remains of the kill switch hanging out? Had a buddies bike do something similar and thought it was TPS and we checked everything even the FPR and turned out it was a short in the line for the kill switch. Uh-uh man, hope you get it sorted out soon though.

[ash-d]

maybe fuel hose or tank breather hose obstructed ive heard that can cause idle problems and cuting out.