Odd Behavior.

[Zormecteon]

At my last fill up (gasoline) my predicted mileage went to 400 miles of range left. .. I drove home, about 25 miles and it was down to 396. The next time I started the car it was at 399, I drove around a bit today, and it started at 396 and went down, after about 5 miles to 395. When I started again it was at 396. I drove about 10 miles and it went down to 390.. I've now gone about 35 miles on the tank and the gas gauge still reads full... I know that often the gauge doesn't move until almost 2 gallons have been used from full, but ...

Is it the computer or the gas gauge (float?) that's the issue? ..

Next time I drive I'' poke the flap in the filler tube and see if that does anything..

IDEAS?

 

[Capri to ST]

At my last fill up (gasoline) my predicted mileage went to 400 miles of range left. .. I drove home, about 25 miles and it was down to 396. The next time I started the car it was at 399, I drove around a bit today, and it started at 396 and went down, after about 5 miles to 395. When I started again it was at 396. I drove about 10 miles and it went down to 390.. I've now gone about 35 miles on the tank and the gas gauge still reads full... I know that often the gauge doesn't move until almost 2 gallons have been used from full, but ...

Is it the computer or the gas gauge (float?) that's the issue? ..

Next time I drive I'' poke the flap in the filler tube and see if that does anything..

IDEAS?

This is kind of a long shot, but how fresh is your battery? The reason I ask is that from reading on this forum through the years I have seen all sorts of weird seemingly unrelated electrical issues caused by a weak battery. I think what may happen is that as it gets weaker it shifts its power to core functions and less critical ones don't get the power they need.

 

[Zormecteon]

It seems strong.. It starts the car just fine. No slow cranking. No indications that it's going bad.