2012 Hyosung GV250 EFI TPS Replacement
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Bike Model = : 2012 Hyosung GV250 EFI
Hey everyone,
I’m trying to figure out how to replace the TPS on my 2012 Hyosung GV250. I’ve already replaced the ISC and the fuel pump, but it still dies out with the TPS connected.
With the TPS disconnected, the bike revs up to around 4,000 RPM on its own. However, it will stay running. When I connect the TPS, it will idle around 1,500 RPM for a short while and then die out completely.
The weird part is that sometimes the TPS seems to come back to life. When it does, the bike runs perfectly with a stable idle and smooth throttle response.
Has anyone replaced this sensor before or knows the best way to access and remove it? Any details on adjustment or calibration afterward would also be super helpful.
I tried to remove a throttle body, but the bolts are super hard to get to, and I got one loose, but the other bolt is getting stripped by the wrench.
Thank you for any advice and information.
'12 GV250 EFI
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(mini)baby 6-sided sockets with a swivel works best , 12-sided sockets or spanners are not good. Spray a little bit of penetrant fluid on the bolts and leave to soak overnight, incase there is some kind of rust that was heat fused (joining the bolt and throttle body down) . Also 6-sided O-spanners work best , forget C-shape spanners as they always slip out.
TPS , here is some links that apply to the 250cc too
[Tutorial] How to replace Gt650r throttle position sensor (TPS)
Your TPS is held down by 1 bolt , but some models have TPS held down by 2 bolts, principle is the same. – Usually it is less frustrating to get a new one than trying to fix an old one , incase the rotating contacts inside the old TPS have broken down.
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