So, almost exactly six years on and my TPS finally gave up th ghost. Despite the good advice on the subtle differences between the pre ‘06 and post ‘06 sensors I still bought the wrong one.

I can make the new style sensor fit but my question is: Is the range of the potiometer on the late version TPS any different to the early version? I can modify the late TPS so the stops pick up the pins on the throttle shaft bu pointless if it can’t see throttle openings above 72%? For reference, the resistance readings accross the sensor are as follows:
Bk-gn = 0.61-4.2k (closed to open)
Rd-gn = 3.99-0.33k (closed to open)
Bk - Rd = 4.38k

I couldn’t get the readings off my old one as it’s trashed.
The following article from bad web help but doesn’t give the TPS resistance values: http://www.badweatherbikers.com/buell/m ... 1432290297


Worst case, I’ll but a new sensor. Equivalent alternative appears to be Airtex 5S5112

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Yes, they all do that sir

You could try to re-map the ECM to the new TPS, as the ECM simply maps TPS voltage range to TPS degrees range. But the mapping has to be identical, and as it's unknown how it is done in detail, I would recommend to get a new TPS.

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"It is often said that before you die your life passes before your eyes. It is in fact true. It's called living."
Terry Pratchett

Thanks Gunter, if you don’t know how it’s done then I’ll take your advice and buy a new TPS.

Before I spent any more, I was hoping that someone would come back with the range of resistance expected across a known good sensor. I’ve since thought that the new TPS maybe okay but it’s not getting the 5 volt supply. I haven’t checked that yet.

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Yes, they all do that sir

Why not just buy a TH53 TPS sensor off eBay? I’m sure they are made around the corner from you...

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08 Specialized Langster

Thanks Pash, or indeed a TH9? It doesn’t have the unnecessary metal bracket and the cables look a little on the short side but hell, it’s only about £12!

I still have to check whether I’m getting 5.0v to the TPS but, having salvaged my old TPS from the bin and measured the resistance between red/green at WOT, the resistance is about the same as you he new one; 0.33kohms

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Yes, they all do that sir