"Running out of fuel" should not cause any long term issues unless
the fuel pump is old and has lots of miles on it... at which point
the contacts of the brushes inside the pump become burnt, that then
leads to hard starting / no starts.
A quick and easy way to check for internal pump wear, is to do a
current ramping test... a good current pattern will be a series of
uniform humps with no drop-outs.
If the vehicle always "acts-up" at a lower fuel level, then you
will have to remove the fuel pump and inspect the flexible plastic
tubes that route fuel in & out of the tank.
Using a scan tool such as VCDS, one can access the Instrument Cluster
Control Module to perform "output tests" of all the gauges.
If the gauge passes the output test, then you know that the problem
is either with the "sending unit" in the tank or the plastic tubes
on the pump.
Saturday, August 18th, 2012 AT 8:24 PM