what makes a Throttle position sensor go bad
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Stage II
Joined: Sep 2009
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what makes a Throttle position sensor go bad
What would make the bike throw a codes for TP Sensor Open/Low EFI. a new tps was installed on this bike not to long ago. now i'm gettin the code agian and the bike is running like ****
Extreme HDF Member
Joined: Jun 2007
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From: Broken Arrow, Oklahoma
I don't know about bikes, but on cars, they operate based on voltage. Even a barely detectable fluxuation in voltage can cause them to malfunction. I had this problem a LOT on my Dakota R/T.
So it could be a fluxuation in power to it, or it could be something with the TPS itself.
So it could be a fluxuation in power to it, or it could be something with the TPS itself.
Road Master
Joined: Jul 2008
Posts: 813
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From: Colorado
Should be your basic variable resistor. Hook up a voltmeter (or better yet a scope if'n ya got one), and watch the voltage from closed to wide open throttle. Should be a smooth voltage curve with no glitches or dropouts.
Might grab a service manual and verify closed throttle voltage spec, and make sure it's adjusted correctly.
Might grab a service manual and verify closed throttle voltage spec, and make sure it's adjusted correctly.
Tourer
Joined: Jul 2007
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Road Captain
Joined: Feb 2009
Posts: 537
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From: Southern California
I heard some time ago on this forum that using the wrong attachment hardware for the air cleaner bracket may damage this sensor. Do you have an after market A/C? If you look at the attachment harware that secures the backplate to the throttle body, the threaded part may travel too deep and hit the sensor causing damage. I don't remember what model bike or which A/C kit they were talking about but if that's the case you will damage this sensor every time.
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From: Broomfield, CO
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Joined: May 2009
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From: Fort Mcmurray ,Alberta ,Canada
check all your connections and make sure they are tight and dry, i had some electrical probs the other day seems the plastic plug wasn't able to lock closed but i got it to click and problems are all gone road like the wind today and never once did it stutter.
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