Thread: Gas light flashing, but I have a full tank
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Old Jul 18, 2013 | 09:21 AM
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onehundred80
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From: Ontario
Default Re: Gas light flashing, but I have a full tank
Originally Posted by ImportLabSRT
The fuel indicator flashes for a evap leak when the evap system tries to check tank pressure. This only happens at 3/4 of a tank and 1/4 of a tank of fuel. Could be as simple as the fuel cap is not tight, or a evap line is leaking.
That is good to know, so I read the Service Manual.
Here is partly what it said.
PVLD test
The leak test consists of three successive tests that are dependent on the previous test passing. If one test fails, the
next test will not be run. The major leak test begins by closing the Charcoal Canister Shutoff Valve and opening the
EVAP Purge Solenoid to allow engine vacuum to build to 6 mbar (2.4 inH2O), as measured by the Fuel Tank Pressure
Sensor, in the fuel tank within approximately 12 seconds. If there is no vacuum buildup in the fuel tank, there
is a major leak present, the leak test is aborted, the Low Fuel Warning Indicator is illuminated in the instrument
cluster and a DTC is stored in the PCM.

Says illuminated not flashing but I guess that is what it means.
If you learn something everyday then the days are not wasted.
 
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