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Date:         Sat, 19 Jan 2002 17:38:36 -0600
Reply-To:     Larry Alofs <lalofs@ENTERACT.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Larry Alofs <lalofs@ENTERACT.COM>
Subject:      Re: Temp sensor failure-->warm start troubles: 1.9L WBX
Comments: To: lamusicamellama@JUNO.COM
Content-Type: text/plain; charset=us-ascii


Les Shiaman wrote:
>
> Another question about how these things work:  I experimented with the
> engine warm by removing the two sensor wires and waited a couple minutes.
>  Engine wouldn't fire up, and usual gas odor.  So is the default setting
> in the computer set for cold starts and if sensor says "I'm hot!" then
> computer adjusts fuel ratio?
>


The temp sensor has high resistance when cold and low resistance when
warm.  When you disconnect it completely, the ECU sees infinite
resistance and thinks the engine is very cold.
  If you connect the two wires together with some type of jumper, the
ECU should interpret that as a "warm" signal.


Larry A.
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