[Vwdiesel] Suggestions ??

[Roger Brown]

doonboggle wrote:
> Went to see the 'VW' mechanic who has my 'new' 81 pickup (1.6 diesel) as a 'hostage' for the past 5 weeks.  Wanted him to check it out since it had not been driven for any degree in the last couple of years after the former Nazi owner had died.  
> 
> In this process, several things popped up, which I expected, with the major one being a needed 'valve job'.  In addition, when he changed the belt, he failed to study the process, and wound up getting the injector pump out of time ... and had to read the riot act to him.  That seemed to help; but still no truck as of today.
> 
> As of yesterday, the hold up now is that he can't seem to figure out what is wrong between the rad. fan and the coolant sensor that operates the temp. gauge.  Initially when I left it with him, the rad. fan did not come on.  Turned out to be the sensor in the radiator; changed; and worked.  Then after all the 'dinking' around with the valve job process, the temp. gauge did not work, and a new 'coolant sensor' (??) was put in.
> 
> With that, while it worked, the fan stopped working again ... and still does not.  In the interim of this, according to the 'expert', the coolant sensor part worked temporarily ... and then it also quit.  
> 
> Result ... now neither the fan or the temp. gauge now work ..... but as above, one time or another, both worked A-OK.  I've looked in Bentley trying to find something to guide him, but the data is limited.
> 
> Anyone familiar with the coolant sensor process as related to the rad. fan process?

No connection between the two, one runs the gauge and one runs the radiator fan, via a relay:
	http://www.4crawler.com/Diesel/CheapTricks/GlowPlugs.shtml#TemperatureSensor
	http://www.4crawler.com/Diesel/CheapTricks/RadiatorFan.shtml

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   Roger