[Vwdiesel] temperature gauge/sender on 82 NA diesel

[ken1]

Here is the remaining info on my temperature senders: both have the same part number, 049 919 501, same voltage - 12V, same max temperature- 120C and some other code of 804/6/2. The only difference is the date, one is 2/80, the other 5/89.
The 5/89 sender is the one that did not function correctly on the temperature gauge. I will just be vigilant and see what happens.
Thanks everyone.
ken 
----- Original Message -----
From: ken1 <ktzkarz at embarqmail.com>
To: r c brown <r.c.brown at ieee.org>
Cc: Vwdiesel at vwfans.com
Sent: Wed, 3 Jun 2009 01:03:42 -0400 (EDT)
Subject: Re: [Vwdiesel] temperature gauge/sender on 82 NA diesel

Will report all info on my 82 caddy tomorrow.
Here is basically what I have so far;
Well, now things are really confusing. I have a CR code NA engine, that was rebuilt and installed in a van before I bought it.
The outlet was already installed. I have a 1982 caddy with the stock cluster modified by replacing the clock with a 1984 GTI tachometer. If required, I suppose I could pull the cluster and get the actual part number.

All I know is the sender that was originally connected to the temperature gauge only registered 3 1/2 marks maximum when I was driving in 105 degree temperatures. The glow plugs appeared to function properly. Have not burned out a plug to date. 
With the wires swapped, I now have a fluctuating and more realistic reading on the temperature gauge and so far, the glow plug system is functioning properly as well.
I will take a magnifying glass and see if there are part numbers on the senders as well as voltage and max temperature.

I found a sender on another outlet flange that contained the following info: date 4/81 temp 120 C voltage 12V and even had the part number 049 919 501 stamped on it. 

Will review Roger's write up and present documentation on my engine tomorrow.
ken
----- Original Message -----
From: Roger Brown <r.c.brown at ieee.org>
To: Vwdiesel at vwfans.com
Sent: Tue, 2 Jun 2009 23:29:51 -0400 (EDT)
Subject: Re: [Vwdiesel] temperature gauge/sender on 82 NA diesel

LBaird119 at aol.com wrote:
> In a message dated 6/2/2009 7:55:57 PM Pacific Daylight Time, 
> jrasite at eoni.com writes:
> 
>> ETKA shows two temperature senders for the 1600 NA diesel in a  
>> Vanagon. One 049 919 501 for the temperature gauge and one 049 919 501  
>> for the glow plug circuit. I suspect that the same part numbers are  
>> applicable to all 1.6 diesels. (Yup. I just checked BusDepot.  Same  
>> sender 1974-1994 diesels. Both gauge and glow.)
>>
>>
> 
>   I could be wrong but I seem to recall that the difference was 
> superceeded so that the gauge and GP relay sender part #'s were 
> compiled into just one sending unit for both applications.
>      Loren

Yes, I think they were initially different, then the same and then different again with 
the GP sender changing from a variable resistor to an open/closed bi-metal switch:
	http://www.4crawler.com/Diesel/CheapTricks/GlowPlugs.shtml#TemperatureSensor

-- 

   Roger
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