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2000 Dodge Dakota Sport 4x4 3.9liter magnum with a P04055 code

Posted / edited by AnonymousUser on : 21-05-2018

Answers :

Sorry to say, code 4055 should be for a major leak in the EVAP system which would not cause any driveability problems.
The evap system is how the computer vents the fumes from the gas tank. If the venting system were not working it could cause a loss of fuel pressure, but not the opposite.
Other than the obvious things like a clogged air filter or a vac leak, you'll have to figure out if it is fuel or ignition related to proceed.
Make sure that code 4055 is the only code stored.
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