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Gas tanks have a sensor that measures the level of gas in the tank. In some cars the sensor is at or near the back of the tank. When the car accelerates, gas piles up at the back of the tank making the sensor think it's full. If you slam on the brakes, the gauge will read emptier. This is caused by inertia.
What else can I help you with?
The gas gauge on a 1995 Chevy astro van goes from empty to full?
The sending unit is probably bad, not unusual.
2000 mercury mountaineer and the fuel gauge only goes halfway on a full tank of gas?
Did you check the -- sending unit !!
Why does a gas gauge on 99 grand am when shows full goes down to half full when gas is used but then starts working its way back to full when gas is being used?
We have been having that same problem I have no clue. Couldn't give you a strait answer.
Gas gaugeworks when full than goes down faster than normal?
There could be several reasons for this issue with your gas gauge. It could be a malfunction in the sending unit in the fuel tank, a problem with the gauge itself, or even a wiring issue. I recommend having a mechanic inspect and diagnose the problem to determine the exact cause.
What causes a 2004 trailblazer gas gauge to read overfull?
Some gas gauges read overfull when you fill the gas tank because the needle goes past the full mark on the gauge. A bad sending unit,bad level sender, or stepping motor may be the cause of the gas gauge not working properly.
The gas gauge shows full but there is no gas. 2000 Chevy Express van.?
the fuse my be blown or ,it needs anew gauge
When you accelerate your gas hand shoots up to full?
This is because gas is a liquid and moves around in the tank, when you accelerate the fuel moves to the rear of the tank, moving the float on the sending unit, making the gauge go up. In turn if you brake hard, the gauge will go down as the fuel will move away from the sending unit. They do put baffles in the tank to keep this from being to bad, but it does still happen on most vehicles.
Why does your gas gauge go to full when you start driving down the road?
Because the car has a full tank of gas.
93 Chevrolet Gas gauge stays on full?
The gauge, wiring or sending unit is bad.
87 Chevy silverado gas gauge reads a quarter at full on both tanks falls as gas is used to empty checked ground and connections unpluged the sending wire at tank and gauge goes to full thank you?
my 86 did the same never would read more than 1/4 tank after lots of checking things i replaced the gauge and it worked perfect..
Why does the oil pressure in a 73 nova decrease when you accelerate and increase when you let off the gas you have a gauge and a light both work not sure gauge is accurate?
It should do just the opposite. I would check that gauge.
What is the fuel line attached to on the top of fuel pump?
for your gas gauge to tell you when your ride is out or full of gas
