[Shotimes] RE: semi OT: how do senders work?

[Paul L Fisher]

OK.


Paul L Fisher

'99 Ford Taurus SHO Toreador Red Clearcoat Metallic 65K - Kirk'ed 2/29/04
 
 - Amsoil Two-Stage Air Filter - TS-124
 
SHO Club member http://www.shoclub.com/
Check out my web site http://www.paul-fisher.com/
Amsoil dealer http://www.paul-fisher.com/oil.htm

-----Original Message-----
From: shotimes-admin@autox.team.net [mailto:shotimes-admin@autox.team.net]
On Behalf Of Kenneth Epperly
Sent: Monday, May 10, 2004 5:16 PM
To: shotimes@autox.team.net
Subject: Re: [Shotimes] RE: semi OT: how do senders work?

There is a timing circuit to allow it to run for 3 seconds to build
pressure, then if the motor fires the pump circuit is completed through the
oil pressure.

        Ken
----- Original Message ----- 
From: "Paul L Fisher" <sho@paul-fisher.com>
To: <TechSHO@topica.com>; <shotimes@autox.team.net>
Sent: Monday, May 10, 2004 5:23 PM
Subject: [Shotimes] RE: semi OT: how do senders work?


> If the fuel pump only runs when there is oil pressure how would you start
> the motor?
>
> The sender basically is a variable resister. Depending whether the sender
is
> a pressure or temperature sender, the increase in temperature/pressure
> causes the resistance to go up/down (depending on design). Basically, the
> wire from the sending unit is ground.
>
>
> Paul L Fisher
>
> 1999 Ford Taurus SHO TR 65K - Stock. Kirk'ed.
>
> Visit my website: http://www.paul-fisher.com
> SHOClub Member: http://www.shoclub.com
> Amsoil dealer: http://www.paul-fisher.com/oil
>
>
> -----Original Message-----
> From: Justin Schick [mailto:jschick@aafp.org]
> Sent: Monday, May 10, 2004 4:15 PM
> To: shotimes@autox.team.net; TechSHO@topica.com
> Subject: semi OT: how do senders work?
>
> Hi all,
>
> I'm hoping some of the more knowledgeable listers will be able to
> answer a question for me. It has to do with my Mustang project, but
> could easily apply to the SHO:
>
> How do one-wire pressure or temp senders work?
>
> I was wiring up the relay (Painless) for my fuel pump on the Mustang,
> and remember reading / hearing that the best way is to run the wire for
> the switched power source to the sender for the oil pressure gauge. This
> way, the fuel pump only switches on when there is oil pressure, which is
> a better scenario than having it constantly running as soon as the key
> is turned past off. I wired it up like this and then began to wonder if
> it'd actually work. Is the sender sending voltage to the gauge (meaning,
> it'd work for my fuel pump relay), or is it grounding itself (meaning
> I'd need another signal source for my relay)? Inquiring minds want to
> know! Thanks in advance,
>
> Justin
> silver 92 SHO in KC MO, along with a couple other Fords
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