Diagnostic Plug

[shamey00]

I believe there is a plug that I can plug a diagnostic lead into on all triumphs but can't seem to find it on my 1999 Thunderbird 900. Does anyone know if there is one and where I can find it

 

[CarlS]

I don't think my 03 T100 has one. I think those plugs came with EFI; I don't carbed bikes have them.

 

[Rocky]

I don't think my '06 has one either.
If it does I have no idea where it is - but I'm quite certain there isn't one.

 

[shamey00]

I don't think my 03 T100 has one. I think those plugs came with EFI; I don't carbed bikes have them.

I spoke to a dealer who told me my Thunderbird is not fitted with one guess I will see about getting the ECU checked out

 

[Mad On Triumphs]

Have you a problem then ??

 

[shamey00]

Have you a problem then ??

Yes it runs rough at low revs and I can see the revs drop every time it misses. Thought it was fuel but mechanic says that's fine so now looking at coils and ecu. Looks like it is trial and error to find the problem.

 

[CarlS]

There is no flashing of the ECU's, at least on the Bonnies. A few brave souls have disassembled them and figured out how to program them. If the ECU is bad, you have to replace it.

 

[Mad On Triumphs]

I must stress that I'm no mechanic, but check the following
Battery voltage.
Spark plugs condition & HT leads.
Spark plugs not making contact.
Pick up coil could be defective. ( Mine went a few years ago, and it won't start when the engines warm )
Pilot screws out of adjustment.
Pilot jet or air passage blocked.
Air bleed holes blocked.
Check all rubbers before and aft of the air box for cracks, ( Check the condition of the air box it'self ) also the clips that secure everything together. ( My carb rubbers went a few years ago. Spray WD40 around the rubbers if the revs go up, you've got a perished rubber or two )
Check the float height in the carbs, too high or too low.
Fuel tank breather blocked.