----- Original Message -----
From: "Bob Harris" <b1werks2@xxxxxxxxxx>
To: <Stan5907@xxxxxxx>
Sent: Tuesday, January 15, 2002 10:41 PM
Subject: Re: 1981 Imp
> Stan - Your Imperial is equipped with an Oxygen sensor which is connected
to
> the CCC. The sensor has a low voltage output to the computer from 0.1 to
1.0
> volts. When the Computer sees this, it alters the speed of the Control
Pump
> in the Support Plate and it either increases or decreases the speed, hence
> the quantity of fuel flow, and the engine responds to this by either
idling
> faster or slower - all to meet the programmed fuel mix to satisfy the
> emissions requirements. This rise and fall of the engine speed is called
> "Bracketing." It means that the emissions output is contained within a
range
> prescribed by the designers to meet the fed/state requirements. You can
> smooth this out by disconnecting the black lead from the sensor to the CCC
> and demonstrate to yourself. This doesn't happen on the carbureted cars
> because the air, and not the fuel, is throttled. For these Imperials, this
> is quite normal If excessive, then you have some analyzing to do. Bob
> Harris.
> ----- Original Message -----
> From: <Stan5907@xxxxxxx>
> To: <b1werks2@xxxxxxxxxx>
> Sent: Tuesday, January 15, 2002 7:55 PM
> Subject: 1981 Imp
>
>
> > Please tell me what the CCC is that you talk about I just got my 1981
with
> a
> > Moonroof about 2 months ago and I only have one complaint that when it
> warms
> > up the idle seems to move about 200 RPM's up and down the car has 55k on
> it
> > now. what would cause this.
>
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