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Bump stop question

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Old 12-31-2008, 04:34 PM
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Default Bump stop question

I just got my T.B. polished and now i'm looking to do the bump stop mod. Thing is I don't any type of software to see the voltage reading, I do however have a D.M. Can it still be done? What voltage should I stay under?
Old 12-31-2008, 05:12 PM
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Any cheapo bolt meter will work... positive on the dark blue TPS wire and ground anywhere. 4.69 max
Old 12-31-2008, 06:26 PM
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Kool, I got a Digital Multimeter, so voltage should stay below 4.69 right? Thanx for the help so far!!!
Old 12-31-2008, 06:36 PM
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Originally Posted by fspeedster
Kool, I got a Digital Multimeter, so voltage should stay below 4.69 right? Thanx for the help so far!!!
Well, technically, from what I've read 4.71 is max and to stay under that. But I try to keep mine around 4.69 to give it a little space and so do most others.
Old 12-31-2008, 07:12 PM
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4.75V for a few seconds sets TPS code and causes some
fault behaviors. You need to stay under this, including
noise and variation.

I recommend you work the bumpstop for the physical dead
center and not for electrical. Use a ruler. Verify that the
electrical output is proper at the end but if it's physically
right and electrically wrong, it's the electrical (TPS slotting)
that wants work. You should not see overvoltage if the
blade is not over center.

You may also find it easier to leave about the outer 1/8"
of the bumpstop alone, hog back the rest of the stop more
than you need, crudely. Then all you have to fine-dress is
that last little 1/8" section.
Old 01-01-2009, 05:19 AM
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Originally Posted by jetlag
well, technically, from what i've read 4.71 is max and to stay under that. But i try to keep mine around 4.69 to give it a little space and so do most others.
thanx! Great info.
Old 01-01-2009, 05:22 AM
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Originally Posted by jetlag
Well, technically, from what I've read 4.71 is max and to stay under that. But I try to keep mine around 4.69 to give it a little space and so do most others.
Originally Posted by jimmyblue
4.75V for a few seconds sets TPS code and causes some
fault behaviors. You need to stay under this, including
noise and variation.

I recommend you work the bumpstop for the physical dead
center and not for electrical. Use a ruler. Verify that the
electrical output is proper at the end but if it's physically
right and electrically wrong, it's the electrical (TPS slotting)
that wants work. You should not see overvoltage if the
blade is not over center.

You may also find it easier to leave about the outer 1/8"
of the bumpstop alone, hog back the rest of the stop more
than you need, crudely. Then all you have to fine-dress is
that last little 1/8" section.
THIS SHOULD BE POSTED SOMEWHERE!!!




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