2007 Buick Lucerne "p0455 vacuum" Questions

...P0455......... Evaporative emission system leak detected ( large leak ) check gas cap code 1451...........secondary air system leak ( bank 2 ) check for vacuum leak code 1423...........secondary air ...

...breaking down at higher RPM ! A vacuum leak would not affect higher speed . P0455 Evaporative Emission Control System Leak Detected Gross Leak Wells EVAP Training with Sgt Tech P0440 P0441 P0442 ...

...P0455 is a EVAP code that means The EVAP system is not able to achieve or maintain vacuum during the diagnostic test. make sure your gas cap is tight cause that will set the code if the cap is tight ...

P0455 Evap System Large Leak Detected for my 2004 Chevy Cavalier. It is not the gas cap. Where else can I look to fix the problem? your problem is probably a vacuum hose that goes from the purge valve

...P0455    CHEVROLET Description This diagnosis detects leaks in the Evaporative Emission System (EVAP) purge line using engine intake manifold vacuum. If pressure does not increase, the ...

...p0455 The evap port is for checking pressure and vacuum in the fuel system storage system.It is a great place to pressurize the fuel system with smoke to find a leak.If you have a p0455 code you ...

...P0455 code. I changes the gas cap. The code returned a couple days later. Any ideas on where to look first and is there a particlar part that anyone knows is a "weak link". Thanks! your engine code ...

...vacuum to siphon the fuel vapors into the engine. Symptoms: You likely won't notice any drivability problems. Causes: A code p0455 most likely means one or more of the following has happened: * A ...

...vacuum to siphon the fuel vapors into the engine. Symptoms: You likely won't notice any drivability problems. Causes: A code p0455 most likely means one or more of the following has happened: * A ...

...P0455 code on it and would appreciate if some one could tell me possible causes. There is a bad vacuum leak somewhere in the emmisions evaporative system. Check all the vacuum hoses for cracks and ...