It should be at the very top near the back of the engine. Just to the right side of the "Vortec" cover on a 4.2 engine.
where is the map sensor located on a 2005 gmc envoy
Mas air flow sensor
My car when slow stop engine
behind the alternator on the motor block.
Where is the MAP sensor located on a 2003 Cadillac DevilleRead more: [[Q/Where is the MAP sensor located on a 2003 Cadillac Deville#ixzz2R1XaEPL2|http://wiki.answers.com/Q/Where_is_the_MAP_sensor_located_on_a_2003_Cadillac_Deville#ixzz2R1XaEPL2]]
It doesn't have a map (manifold absolute pressure) sensor. It has a maf (mass air flow) sensor and it is located in the air intake snorkel between the air filter box and the throttle body.
Between the front grill and the radiator.
about $50
www.motorcraft.com does not list a MAP sensor for the 4.2 L V6 , 4.6 L or 5.4 L V8 engines for a 2003 F150 , they list an air mass sensor which I assume is the MAF sensor
Try asking some of the technical gurus at our enthusiasts forum www.trailvoy.com Trailblazer/Envoy forum
Map sensor is located on the hose going from the filter box to the throttle body. There is only one sensor in that area.
Its on top of the engine