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Any ideas?


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bushman
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Any ideas?

Thu Aug 07, 2008 8:12 am » Post: #1 » Download Post

I swapped over the carbs,R/C v/v servo,cleaned the v/vs,-factory clean-moving freely and....chanced the PGM from my other bike.With the cables disconnected,the servo cycled fine,reconnected the cables watched the movement,which lasted for a few minutes,then nothing!(bollox).I'm depressed now Rolling Eyes any ideas as to what I can try next?
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Dave Ett
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Thu Aug 07, 2008 11:24 am » Post: #2 » Download Post

Did you rotate the valves with cables attached to check the cables are not binding?
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bushman
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Thu Aug 07, 2008 2:14 pm » Post: #3 » Download Post

Being a novice at these things,I checked and rechecked the v/v movement,before connecting the servo up to the good PGM.The cables are fine,battery new and conditioned,maybe an earthing problem,or a short circuit?I'm guessing now!
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Sat Aug 09, 2008 8:37 am » Post: #4 » Download Post

The power valve motors draw their current from the PGM in the seat hump, and excess current draw is usually the best way to kill your PGM.

Have you checked all the connections are free of corrosion and properly seated?

Might be worth whipping the top off the PGm and checking it for signs of overheating - burnt smell or darkening of the rubber coating. If the valves rotate once I'd gues it was fine though.

Any good with a multi meter? can you connect it inline and check the current draw when it works and again when it doesn't?
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bushman
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Sat Aug 09, 2008 3:51 pm » Post: #5 » Download Post

I'll have to get cracking on a loom inspection,more out of hope than anything else Rolling Eyes I have a shiney new PGM, ,but I really don't want to risk any more failures.What is confusing ,is the fact that the v/vs are free to move by hand,so the current draw should be within normal operating parameters Confused .The cables are routed correctly,and in the right order,anyway,I'll see how I get on with the electrical connections etc.Thanks for the replies folks.
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Sat Aug 09, 2008 4:57 pm » Post: #6 » Download Post

You do know the servo will only cycle once, to it's "Lo" position, unless the motor runs?

The only convenient way to test it otherwise is to disconnect & reconnect the T.P.S. which should then sweep the servo from "Lo" to "Hi" and back again respectively.
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bushman
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Sat Aug 09, 2008 7:12 pm » Post: #7 » Download Post

I had the motor running,when the servo stopped working.ie,the v/vs were hunting as normal depending on revs.
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Sat Aug 09, 2008 8:02 pm » Post: #8 » Download Post

Sorry; that's not clear from the opening post.

What happens when you try the T.P.S. test?
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bushman
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Sat Aug 09, 2008 9:05 pm » Post: #9 » Download Post

Andy wrote:Sorry; that's not clear from the opening post.

What happens when you try the T.P.S. test?
Haven't had a chance to do anything with it since.
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bushman
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Fri Aug 15, 2008 12:49 pm » Post: #10 » Download Post

Changed over to another set of carbs,bingo!T.P.S.,I'm assuming?
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