[DeTomaso] Techno question: dead temp gauge

[Tomas Gunnarsson]

For that test to work you also need to connect the bodies of the two cars with e.g. a jumper cable. Yes, the temp sender is a resistor that varies with temperature.

Tomas

----- Original Message ----- 
From: <MikeLDrew at aol.com>
To: <cengles at cox.net>; <detomaso at realbig.com>
Sent: Sunday, August 12, 2007 10:43 PM
Subject: Re: [DeTomaso] Techno question: dead temp gauge



In a message dated 8/12/07 13 33 34, cengles at cox.net writes:


> It is obvious that I am not sure if my problem is the sender or the 
> gauge at this point. Sigh.
> 

This will sound VERY silly.   But there is a semi-easy way to test such 
things when you are as electrically-challenged as I am.

You have the benefit of TWO Panteras in your garage.   Presumably the other 
car has a functioning temp gauge?

You can either swap senders (too much work), or get a long piece of wire, 
temporarily hook one end to the sender wire on the 'bad' car, and the other end 
to the temp sender on the 'good' car.   Then start the good car and let it warm 
up.   Turn on the key in the bad car; if the gauge works, then the problem is 
*definitely* a bad sender in the bad car.

I don't even know how the temp sender works.   I presume that 12V goes into 
one side of the gauge, and the wire from the gauge to the sender is the ground 
wire?   So the sender is some sort of ground rheostat?

Somebody whose initials are SOB please help me understand this! :>)

Mike 


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