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MAF Wiring


C.Fuller305

Member
Joined
Jan 1, 2021
Messages
35
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5
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8
Location
South Carolina
Vehicle Year
1993
Make / Model
Ford Ranger
Transmission
Automatic
I have a 1994 Ford Ranger with a V6 4.0. I have been having trouble with idling and narrowed it down to the wiring for the MAF sensor. However I want to bypass the original harness and put my own wires in but I can't find where they lead to in wire mess at the rear driver side of the engine compartment. does anyone have a diagram or know how to find them?
 


RonD

Official TRS AI
TRS Technical Advisor
Joined
Jun 2, 2012
Messages
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Location
canada
Vehicle Year
1994
Make / Model
Ford
Transmission
Manual
MAF has a heater inside like O2 sensors do, red and black wires, 12v key on, and full time ground
Then 2 wires for the actual "sensor" part
They go to the Computer, pins 14 and 15

Diagrams below, you need both, page 2 upper right MAF
This has all the engine wiring for 1993 or 1994 4.0l

Change O2 sensors every 100k miles or 12 years, these are the ONLY sensors that wear out
 

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