Mass Air Flow Sensor Test - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

archer0097 · 12-20-2006, 09:42

Is there a way to test to see if it is bad? My symptoms go away when it is unplugged.
Symptoms are rough idle, bucking, stalling, etc. Runs fine at higher rpm. I did find a broken vacuum line which I replaced...others look ok.

Thanks in advance.

GJSmackdown · 12-20-2006, 16:48

Can't say for sure, but I would say if everything works fine after you unplug the sensor I'd probably have it replaced.

BriansExplorer · 12-31-2006, 16:15

Did you check to see if it's getting power. And did you check the resistance across the element?

archer0097 · 01-01-2007, 12:26

No, what should the resistance be?

We took a new(reman) MAF Sensor and it did the same thing. Runs smooth, though at higher rpm, when MAF is unplugged. So I put the old one back on. Think I have narrowed it down to an air leak at the intake manifold but have not pinpointed the exact location.

BriansExplorer · 01-02-2007, 19:00

Quote:

Originally Posted by archer0097

No, what should the resistance be?

We took a new(reman) MAF Sensor and it did the same thing. Runs smooth, though at higher rpm, when MAF is unplugged. So I put the old one back on. Think I have narrowed it down to an air leak at the intake manifold but have not pinpointed the exact location.

I just meant that if the resisance across the element does not register that is infinite then the element is shorted. It sounds like you have the problem nailed with the intake leak. Let me know how you fix the problem. Good Luck