Crank Position Sensor?

Did you measure it hot or cold?
If the insulation is breaking down then this could affect the readings given.
I'd measure it again at different engine temperatures.

 

Hi, I have a 2002 1200 trophy whose engine and ignition is a very close cousin to your 900 thunderbird. I had problems where the engine would run very rough and wanted to cut out, but not all the time. I did the carb cleaning, new air filter, new plugs etc, no significant change. Checked the coils (2 of them on mine), one had infinite resistance on the HT side, so I swapped it out, no change. The other measured fine. HT lead no 2 was reading lower on Kohms so swapped that out, no change. CPS was 570ish cold, 700odd ohms hot, so I swapped that out, no change. So swapped out the good coil. Hey presto main problem went away. It still had a slight issue which turned out to be a faulty new No 2 HT lead. I wish I'd just bitten the bullet and swapped out both coils at the start (but they were a bit more expensive on mine £89 each). Our bikes are getting on and the coils are in a very poor position, heat wise. Your coils are cheap to replace, sprint manufacturing do a pvl copy for £25 each and you only need another 2. It may not fix your problem but it's an easy swap and they have a bad reputation for failing over time. I'm also glad I replaced the cps (even though it wasn't at fault) as it's removed that worry from my mind and the bike runs like new now.
BTW, if the cps reads open fault when the bike fails then it's likely to be the cause, but a raised resistance as seen by mine isn't necessarily the fault.

 

@Payney No not weird in any way. That is what this forum is good at and people here are only to happy to led a helping hand. I do hope you get sorted soon as they are great bikes and need to be pampered.

 

I've just checked my notes. My cps was reading 576ohm cold, 686ohm warm (i.e. after idle for a bit), hot 704ohm (after riding and bike starting to run faulty).
As I said before, I swapped out the cps but it turned out not to be the fault.
I didn't write down the new cps readings but as I recall it was just below the quoted specs and didn't change after coming back from a ride. This is from memory only, though.

 

I was asked to work on a friends ZZR 600 after he'd tried numerous times to resolve an issue. I ended up condemning one of the two coils and he wasn't willing to buy a brand new one due to the cost. A secondhand one could potentially have been twenty plus years old, and I warned him of the dilemma that could cause. However, it not only resolved the problem but he stated it was running the best it ever had.
He later declared the fault may have been there from when he bought it, and was over the moon with it's new running smoothness and power.

Coils can be tricky to resolve especially if its heat related and sometimes substitution is the only real way to test them, but not great if you don't have access to spares.
My mates 675R had an intermittent issue, full power, smooth running, then stall and reluctant to start. Eventually fire it back up and all 100% again

All very frustrating, especially on one day out I recall!

I told him he could, if he wanted, take them off my 675 and run with them for a few weeks as I was using the 765.
Issue resolved.
Three coil packs bought and mine refitted.

Good luck

 

Fair play for getting hands on and diagnosing it yourself.

 

Looks like my memory has a fault! I took the trophy out for a few hours and as soon as I got back (basically turned the motor off, took helmet/gloves/jacket off, opened the garage, got the meter and took a reading), I measured the cps and it was 668ohms. So basically, very close to the original one. Looks like I have a spare!
I thought I'd add it here so that others in the future might see what a 22 year old cps can read and a brand new one (well 8 months of use.).

 

The triumph manual doesn't help either.
I'm not that experienced at diagnosing electrical faults as up until last year my triumphs have been pretty reliable but I concluded that static tests are not that helpful unless there is an obvious fault.
I think the cps probably needs a dynamic test to see the wave forms to be more accurate in diagnosing. Good luck getting your bike running nicely.