Re: Re: TPS and MAP control / operation ATTN Arnold

From: Arnoldo Silva (silva@rio.bravo.net)
Date: Sun Mar 04 2001 - 22:49:58 EST


i noticed that to i thought maybe my tranny was a piece of cr-- sometimes
when you hammer it it kinda sits there for a second before it does anything
i can feel it slipping maybe thats what it is now that you brought that up.
arnold
----- Original Message -----
From: "Bob Tom" <tigers@bserv.com>
To: <dakota-truck@buffnet.net>
Sent: Sunday, March 04, 2001 9:26 AM
Subject: Re: DML: Re: TPS and MAP control / operation ATTN Arnold

> At 11:34 PM 3/3/01 -0600, you wrote:
> >when i depress the gas pedal fully it doesnt accelerate as fast as when i
> >ease off the gas a bit say 3/4 throttle it has no change in rpm or sound
but
> >you can actually feel that it goes quicker if you ease back on it.
several
> >people said they can feel the same thing on their truck one person said
he
> >thought it had something to do with the puter richening the mixture to
much
> >to help with cooling and poss. retarding timing. any info helps
> >thanks arnold 2000 qc 4.7 auto
>
> It is generally true that, as engine load increases, that timing is
retarded
> and mixture is richen, as a safety precaution in the WOT maps but
> you would still be running faster over a period of time with the throttle
wide
> open than at 75% throttle.
>
> One thirdhand bit of info. that I picked up which might explain this
phenomenum
> is that, in the newer transmissions, the lockup clutch in the torque
> convertor is
> modulated so it has controlled slippage (instead of the normal
> engaged/disengaged).
>
> Bob
>
>
>



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