[T3] Car Cures Itself Twice...

[J. Jonik]

1)  Apparently stuck fuel level sensor in gas tank got unstuck simply by
 filling the tank up to the top (just to see what the  gauge 
registered).   Great.  Didn't have to clean out the trunk to replace or 
fix the floating sensor thing.  
  Only oddity is that the gauge 
needle seems to bounce around on road bumps more than I remember.  I 
forget if it did that before.  

2)  After gas tank removed and 
re-installed in order to instal "new" front axle beam, all was 
well...except for that fuel level sensor thing.   But, now there's a new
 symptom of something.  
 Car idles well...but, when cold, it drives 
rough...kind of flubby...as if insufficient or erratic fuel, or some 
air-fuel imbalance, or a clog, or I don't know what.

But then, 
when car's warmed up...suddenly, usually with a little rev in 4th gear, 
all that is cleared up and the car runs like it's supposed to.   And it 
stays fine...until starting up again after car sits for a long time. 
Then the same thing.   It cures itself when warmed up....a few 
minutes..a few miles.
 What might that indicate?   Where to start looking and testing or replacing?
 NB-  Cold Start stuff has been disconnected for years.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.vwtype3.org/pipermail/type3-vwtype3.org/attachments/20130608/759edfad/attachment.htm>