Answer by  
                                                                                          TravisUSMC (979)
                                                            
                          
                          
                                                          On a Ford Explorer the mass air flow sensor is located on the large air intake tube just before the air filter. Unclip the electrical wires from it. Now it has 4 screws holding it dowwn, they are whats called star, or torx screws. You can get a set anywhere.