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TPS
Dec 23, 2013 10:36:02 GMT
Post by crickleymal on Dec 23, 2013 10:36:02 GMT
Having read that the TPS could give trouble on the 900 I went and had a look at my 600 and there is what appears to be a TPS on it too. What exactly does it do? Yes I know it senses the throttle position but I didn't think there was that much other electronics on the bike. Is there some sort of engine management system?
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TPS
Dec 26, 2013 18:43:43 GMT
Post by crickleymal on Dec 26, 2013 18:43:43 GMT
Someone must know surely. Why is there a TPS on such a basic bike?
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TPS
Dec 26, 2013 20:25:37 GMT
Post by HRHpenfold on Dec 26, 2013 20:25:37 GMT
The tps is the throttle position sensor, on a basic bike like this, it tells the ECU where the throttle is, then the ECU can adjust the timing more fine, to. Improve emissions and consumption!
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TPS
Dec 26, 2013 20:30:55 GMT
Post by m40man on Dec 26, 2013 20:30:55 GMT
I think it's the same objective across the board - "simple" bike or sexy complex one - in that it's there to provide the best spark advance for any particular throttle position. I think all it does is to feed the bike's CDI with the information so the CDI can vary the spark advance as required. Objective to provide the best economy / performance for the fuel being delivered. So in theory you could bypass it (but I've no idea whether the CDI would work at all without a signal from the TPS - depends how the CDI has been programmed I guess .) If that did work, I think you'd expect to lose some performance or economy, or both, otherwise the TPS would be redundant & so Yamaha would save their money & not fit one. Probably!
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TPS
Dec 26, 2013 20:32:22 GMT
Post by m40man on Dec 26, 2013 20:32:22 GMT
Dammit Ian - you beat me to it, & in rather less words .
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TPS
Dec 27, 2013 9:16:29 GMT
Post by crickleymal on Dec 27, 2013 9:16:29 GMT
I see. Thanks.
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TPS
Dec 27, 2013 17:56:13 GMT
Post by bobh on Dec 27, 2013 17:56:13 GMT
Back in pre-electronic days, when ignition used mechanical contact-breaker points, cars (possibly not so much bikes?) had vacuum advance-retard which did a similar thing, i.e advanced the ignition at small throttle openings (more vacuum) to give optimum cruising and retarded it at higher openings (less vacuum) to prevent pinking.
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