93 GRAND CARAVAN RUNS POORLY WHEN FUEL TANK BELOW QUARTER FULL.....

It has the 3.0 with automatic, seems to run just fine above 1/4 full
fuel tank, but sputters below that. Fuel filter was recently replaced,
lots of bottles of isopropyl alcohol too. Got 28 MPG on a recent 400
mile excursion. Any ideas? Thanks.

 

Fuel Pump??

 

How'd you manage that? I get around 18 mixed city/hwy in my '93 3.0L. I am
hauling around a wheelchair ramp setup at all times though.

 

When I had a 94 GC with 3.3 litre, I was getting about 20 MPG city,
and 27 MPG highway. Engine was impecably maintained, and trans had
been rebuilt.

City driving was unloaded, and highway was frequently full of camping
gear to the roof.

That was a great van.

The jury is still out on my 2002 GC. I have to go through a couple of
tanks of gas before I can compute a fair avarage MPG after the
firmware flashes.

 

do a fuel pressure test with the tank half full and then with a 1/8 tank and
see what you get
a 3 lb drop from spec means dropping the tank to inspect hoses and such for
the pump