Your engine’s manifold absolute pressure (MAP) sensor is your little buddy. Buried somewhere in the stream of your charged intake air (usually in the manifold), it employs a little ceramic or silicone ...
QI have a 2007 Dodge Grand Caravan with the "check engine" light on. I checked it with a code reader and got a P0404 code: "Exhaust Gas Recirculation Circuit Range/Performance." A new EGR valve costs ...
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