You may want to replace the wire that runs back to the ECU.  I've found
these
break more often than the sensor goes bad.
                                                 Eric

Chad Morris wrote:

>Bingo!  I double checked that the plug to the temp sensor was securely in
>place.  No problem there.  Then I started wiggling around the wire and
>suddenly noticed a change in engine RPM.  Timing now advances as it should.
>Thanks for your help.
>
>
>----- Original Message -----
>From: "Eric Zeno" <vw4x4@FYI.NET>
>To: <vanagon@GERRY.VANAGON.COM>
>Sent: Thursday, September 04, 2003 8:38 AM
>Subject: Re: timing does not advance
>
>
>
>
>>A lot of people claim these go bad.      I've never had one go bad,
>>but the wiring to the sensor, and the connection has been a major
>>issue with many vanagons.   Check those.
>>                           Eric
>>
>>Chad Morris wrote:
>>
>>
>>
>>>Could that mean that my temp sensor II needs to be replaced?  Would a bad
>>>temp sensor cause such behavior?
>>>
>>>----- Original Message -----
>>>From: "Eric Zeno" <vw4x4@FYI.NET>
>>>To: <vanagon@GERRY.VANAGON.COM>
>>>Sent: Thursday, September 04, 2003 6:18 AM
>>>Subject: Re: timing does not advance
>>>
>>>
>>>
>>>
>>>
>>>
>>>>By unplugging the temp. sensor II you cause the computer
>>>>to not adjust the timing.  ITs sounds to me as if re-installing
>>>>this connection, the computer is still not working.
>>>>                                                 Eric
>>>>
>>>>Chad Morris wrote:
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>>Hi all,
>>>>>
>>>>>I followed procedures outlined in a posting by Mark Keller to set the
>>>>>
>>>>>
>>>>>
>>>>>
>>>timing on my '89 Carat, automatic.  According to his instructions I set
>>>
>>>
>the
>
>
>>>timing so that the mark on the pulley (which is supposed to be the 5
>>>
>>>
>degrees
>
>
>>>BTDC mark) lines up with the case seam while the engine runs at 2400 RPM.
>>>No problem there.  However, as I understand his instructions, above 3000
>>>RPM, the timing should reach a total advance of 40 degrees.  On my engine
>>>the timing does not advance at all.  No matter where I set the timing at
>>>idle, at higher RPMs the timing does not change at all.  Can anyone
>>>
>>>
>explain
>
>
>>>this?
>>>
>>>
>>>
>>>
>>>>>Chad Morris
>>>>>89 Carat
>>>>>Salt Lake City, UT
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>
>>>
>>>
>>>
>>>
>
>
>
>