fuel vapor pressure sensor symptoms

 

 the pressure sensing element VPS measures the vapor pressure within the physical change emissions system the vapor pressure sensor could also be settled on the fuel tank close to the charcoal canister assembly or in a very remote location the pressure within the reference chamber changes with gas pressure The reference chamber pressure uses a little versatile diaphragm exposed to atmospheric pressure this causes the reference pressure to extend with a rise in atmospheric pressure victimisation this technique permits the vapor pressure reading to be tag with atmospheric pressure vapor pressure sensors are available in type of configurations once the bits per second is mounted directly on the fuel tank assembly no hoses are needed  for remote locations there could also be one or 2 hoses connected to the VPS if the VPS uses one hose the hose is connected to pressure within the two hose configuration one hose is related to vapor pressure the opposite hose to gas pressure it's vital that these hoses are connected to the correct port