Slight corrrection on VSS

David A. Cooley n5xmt at bellsouth.net
Wed Jan 6 00:16:36 GMT 1999


At 05:39 PM 1/5/99 -0600, you wrote:

>That's decel cutoff, isn't it?  I used to own an '89 vette with the
>digital dash.  One of the many things the dash would do was read out
>instantaneous mpg.  I distinctly remember that if you let off the gas,
>say in second gear and around 30 mph (like slowing for a stop sign),
>about a half second after getting off the gas there would be a small
>lurch, and the mpg meter would peg at 99.  When you slowed to the point
>that rpm was almost idle, like 1200 or so, there was a much more
>noticeable lurch and the mpg meter would drop to a reasonable value. 
>The service manual also confirmed that the ECM would shut off fuel
>delivery under some deceleration conditions.  Mine was standard, does
>the automatic bin do this?  seems like an auto could stall without the
>drivetrain keeping the engine turning.

Yep..
The auto's do it as well.
The MPH/RPM points are different to ensure the engine won't stall though.

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           David Cooley N5XMT           Internet: N5XMT at bellsouth.net
     Packet: N5XMT at KQ4LO.#INT.NC.USA.NA   T.A.P.R. Member #7068
       I am Pentium of Borg...division is futile...you will be approximated.
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