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TC Grinding on Lockup

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TC Grinding on Lockup

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Old

Jul 12, 2006 | 08:01 AM

#1

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TC Grinding on Lockup

Have a Fuddle 4200, and could not be happier with it. Something it has done though, seemingly always, is make a "grinding" noise on lockup. I hardly ever notice it due to the sound of the car, but can I fix this through programming? Is it just line pressure or something related to that? I have HPTuners. Thanks.

Old

Jul 12, 2006 | 09:14 AM

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Start with setting the TCC minimum duty cycle to 98%.
A harder-grabbing clutch sometimes does not apply so
smoothly at light apply pressures like with the factory
PWM "feathering" at lighter pedal.

Old

Jul 12, 2006 | 09:18 PM

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If that does not work, what should I do?

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Jul 13, 2006 | 10:17 PM

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Line pressure should be adjusted too my 4k was doing the same thing. We upped the pressure and it locks without the grunt and got back some firmness in the shifts.

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Jul 13, 2006 | 10:52 PM

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Can u adjust line pressure without a tuner all i have is a predator(not so good)

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Jul 15, 2006 | 11:01 PM

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Which catagory or specific setting is this?
TCC minimum duty cycle to 98%

Is that the actual name?

Old

Jul 17, 2006 | 09:31 PM

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Anyone?

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Old

Jul 18, 2006 | 04:00 PM

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See pic, for example.

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TC Grinding on Lockup-tcc_duty.png

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Old

Jul 19, 2006 | 10:16 PM

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Jimmy what software is that?

Old

Jul 20, 2006 | 05:36 AM

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I could not find that specific page on HPTuners...

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