Your Mustang's manifold absolute pressure sensor or MAP sensor is located behind the firewall and provides manifold vacuum readings to the PCM. Make sure yours is in perfect working order with a replacement sensor from Latemodel Restoration Supply.
I've done the majority of my aftermarket mustang parts shopping at American muscle, recently finding out about this website I'd just like to say it is a great experience to shop here, the lay out is easy and simple to navigate, and you have thousands of parts that no other website has. The shipping is very fast and all te updates are great. I will be doin much more shopping with y'all, so thanks for being so badass hahaJames Houck from Lipan TXposted 7 months ago