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Check the Egr Tube out, i managed to double my fuel economy after discovering a hole in the egr tube under the thermal wrap, i dont know how it happened or got there but its worth looking, Also as bad as your fuel economy is, keep in mind even in optimal condition the 3.7 engine is about as...

Hello everyone! I have an issue that has been bugging me for almost a full year now, 2007 KJ 3.7 135k, Has the newer style PCV system in the back of the intake manifold rather than over by the oil filler/airbox area, First started having high idle issues and got The typical P0507 High idle...