How to test MAF Sensor?

[CTpro5]

so lately my car's idle been very rough, almost wanna stall at light. How do i test if the MAF sensor is at fault? can i just unplug it, and drive to see if problem clears??
I have changed plugs, wires, coil packs. so now i think it's either EGR, Idle control valve or this MAF.also CEL code is P0300 random engine misfire.

 

[flash75]

You can unplug it and if the idle improves it should be replaced according to a Haynes OBDII manual I have.

Clifton

 

[CTpro5]

I unplug it while idle today, and the idle does improve, but when i try to drive with it unplug, the car stalled. so does that means it's defective??

You can unplug it and if the idle improves it should be replaced according to a Haynes OBDII manual I have.

Clifton

 

[323]

I think the first part may have shown that it is defective, but even a good MAF unplugged while you're driving will stall

 

[CTpro5]

replaced MAF too. idle's still rough. Also now when i try to restart the engine when warm, it cranks for like 10 seconds to get it to start. Couls it be my 02 sensors?? or EGR??

 

[Tommyr]

Ya I am having the same problem yesterday I installed a SRI so maybe when I put the MAF back on I didn't put it back on properly tomorrow when I have a looking at it is there anything in particular I should be looking for?

 

[gsmooth]

having the same problem.
changed plugs cables, coils and cleaned out the EGR valve...still rough idel with a flashing to non-flashing CEL
HELP

 

[P-Funk!]

All ya' all (Southern Plural Possesive) need to check the plastic intake hoses for cracks/holes.

An don' noncha' unplug the MAF to troubleshoot - ya' hear?!

 

[pro2002]

^^agreed^^ Had the same problem which was a crack in the intake tube.

 

[Tommyr]

Ya I checked all my connections to make sure there was no gaps, now I guess ill look at all the connections to see if there is any cracks. Where can I get new connectors if they are cracked?

 

[Tommyr]

Tried higher octane gas still having the problem!