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-   Modular V8 (4.6L, 5.4L) (https://www.ford-trucks.com/forums/forum48/)
-   -   Normal Specs for MAF sensor in 5.4L Engine (https://www.ford-trucks.com/forums/587753-normal-specs-for-maf-sensor-in-5-4l-engine.html)

jrroth 03-06-2007 10:40 AM
Normal Specs for MAF sensor in 5.4L Engine
 
What is the normal operating band for MAF for the 5.4L engine. The MAF sensor is reading from about 0.8 to 1.5 #/minute per OBD2 diagnostic software. I am currently trying to diagnose codes P0171 and P0174 in a 2002 E-150.

Thanks in advance

LxMan1 03-06-2007 08:22 PM
Not sure of the spec's right off, have you cleaned the MAF yet? Have you checked the PCV hose elbows for cracks/leaks?

JRROTH1 03-06-2007 11:38 PM
No - I won't have time to really work on it until this weekend. I just wanted to see what the MAF sensor was doing prior to cleaning it. I figured if it was reading normal then I might consider leaving it alone and checking everything else first.

krewat 03-16-2007 11:18 AM
Originally Posted by jrroth
The MAF sensor is reading from about 0.8 to 1.5 #/minute per OBD2 diagnostic software.
At what RPMs? And how much go-pedal?

jrroth 03-19-2007 11:33 AM
RPM are idle to about 2000 rpm under no load. Why go-pedal>

Jim R.
'04 F150 SuperCrew XLT 4x4 5.4L V8
'97 F150 SuperCab XLT 4x2 4.6L V8

LxMan1 03-19-2007 11:45 PM
Because the voltage varies depending on how much air is being drawn thru it.


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