1991 F150 Maf Location Please
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Yes, these trucks use a Speed Density system, which uses the MAP sensor. It reads vacuum from the intake manifold.
Like already mentioned, it's located on the firewall on the passenger side and looks like this. Mine is mounted with the connector and vacuum line pointing towards the front of the truck.
Like already mentioned, it's located on the firewall on the passenger side and looks like this. Mine is mounted with the connector and vacuum line pointing towards the front of the truck.