map problem 94 4,0

[Rolf Persson]

Im getting codes for high MAF voltage and low MAF voltage at the same time. Any ideas. Its a 94 ranger with 4.0.

 

[FritzTKatt]

Reference the volts it gets with key on, against what it's supposed to get by the book (likely 12v).

Check the expected resistance of the device against what's specified.

I'd guess either A) it's not getting what it needs, or B) it's going/broken... or both. So you should be able to narrow it down pretty easy.

 

[SenorNoob]

I had the same problem on a '92 with the 2.3. Trip to the junkyard for a $15 MAF fixed it...

 

[feellnfroggy]

go to a junkyard a get a 5 dollar maf or a couple of them, and swap it out and see if the results are different.... before you do that, unplug the maf and see if it runs better or worse.