[Vwdiesel] electric thinggy on front of 1.9 pump

Edward Lowe maded at mac.com
Sun Sep 20 11:57:35 PDT 2009


This sounds like something good to have.  I think most who use the AAZ engine just leave it disconnected.  Would it not be possible to get the goodness out of this feature by inactivating it with a simple boost pressure switch?  What about those switches on the top of the pump that seem to be activated by a cam that shows throttle position-- could they be used to inactivate the load dependant timing solenoid?  ( We're talking hear about the solenoid and little pipe on the side of the 1.9 AAZ pump, right?

Is there anyone out there who has understanding of this thing that could explain the function step by step?

ED LOWE seattle

On Saturday, September 19, 2009, at 08:54AM, <dieseltdi at verizon.net> wrote:
>For all those folks who are just have to know what this thing is.   
>Here is the quote from the Bentley Manual:
>"The injection pump is equipped with load dependent timing and boost  
>enrichment.  The load dependent timing function retards pump timing  
>during low engine loads for better fuel economy and exhaust  
>emissions.  In order for boost pressure enrichment to function, load  
>dependent timing must be turned off during high boost/load conditions."
>This device is controlled by a very different and very expensive  
>"automatic glow time control module.  Now you know....and knowing is  
>half the battle....GI Joe!!!!  Um sorry..... Hayden

More information about the Vwdiesel mailing list