Fire & skill
Vintage member
just di this to a mates car - i dont know if its made a difference TBH, although the reading is right now, still idling lumpy
MAF Sensor regrounding
- Thread starter Fast Guy
- Start date
What are the symtoms of a MAF that needs (reads over the 9mv stated) to be re-grounded/earthed. Anyone who's done this have you noticed any benifit at all.
Dooie Pop Pop
New Member
running rich usually
Just had a Z32 MAF fitted to my car and suspect it needs grounding properly. Problem is under the rubber cover on the plug there's 4 wires, white, black with white band, black and another white, how do I tell which is the earth ???
A
AJ4
Guest
measure the resistance between each of the pins and ground ( with the loom connected and ignition switched off ). One of them should be about 1 ohm, thats the one.
Also, just found this in another post -
Pin B - White Wire (MAF Signal)
Pin C - Chassis Ground (Connect this to any ground on the chassis)
Pin D - Black Wire (Harness Ground)
Pin E - Black/White Wire (Power)
Also, just found this in another post -
Pin B - White Wire (MAF Signal)
Pin C - Chassis Ground (Connect this to any ground on the chassis)
Pin D - Black Wire (Harness Ground)
Pin E - Black/White Wire (Power)
Cool, cheers Ross 
Pin B - White Wire (Thin wire)
Pin C - Black/White Wire (Thin wire)
Pin D - Black Wire (Thin wire)
Pin E - White Wire (Fat wire)
Now I'm confused :? Need to get the Multimeter out me thinks :roll:
This is what I got on my plug :?
Pin B - White Wire (Thin wire)
Pin C - Black/White Wire (Thin wire)
Pin D - Black Wire (Thin wire)
Pin E - White Wire (Fat wire)
Now I'm confused :? Need to get the Multimeter out me thinks :roll:
Right, just had a look to see if I could find the ground wire on my Z32 plug, with the Multimeter set on the 2000 ohm setting and the cable layout as above post, I get a 1 ohm reading on both the black and the black & white wire :?
Trouble is if I connect to the wrong wire I will distroy my MAF, am I using the corrrect Mutimeter setting ??
Trouble is if I connect to the wrong wire I will distroy my MAF, am I using the corrrect Mutimeter setting ??
A
AJ4
Guest
2000 ohm range is fine.
Here's how I'd work it out.
The pin B wires match up ok ( signal wire ).
The Pin D wires match up ok ( harness ground ).
Pin E is supposed to be live, so expect a thicker wire ( as you have found ).
That leaves Pin C as the chassis ground.
That ties up with what you measured ( Pins C & D are grounds )
Is it too late to leave a disclaimer ?
Here's how I'd work it out.
The pin B wires match up ok ( signal wire ).
The Pin D wires match up ok ( harness ground ).
Pin E is supposed to be live, so expect a thicker wire ( as you have found ).
That leaves Pin C as the chassis ground.
That ties up with what you measured ( Pins C & D are grounds )
Is it too late to leave a disclaimer ?
:lol: :lol:AJ4 said:Is it too late to leave a disclaimer ?
Cheers for that Ross.
EssexAaron
Member
i tried taking this reading and its just fluctuating. is it supposed to do that?
B
boozyboo
Guest
went to the tuners, they pluged my car and got a reading of 315v to the maf from a 12v battery. work that one out:der:
B
boozyboo
Guest
:lol: just read the date:lol: :doh:
B
boozyboo
Guest
youngsyp said:
i watched the computor. it fluctuated from 3.2v to 315v (thats not a typo) to the maf.
EssexAaron
Member
someone dont know how to read a multi meterboozyboo said:
P
philpy
Guest
For those of you that have reground your MAF did you:
Cut the existing white wire and take it from the MAF plug straight to the ground, therefore leaving a dead tail in the wiring loom.
Or
Just add a spur to the existing white wire leaving it intact but with a new ground nearer the MAF.
Just wondering if this makes a difference.
Cut the existing white wire and take it from the MAF plug straight to the ground, therefore leaving a dead tail in the wiring loom.
Or
Just add a spur to the existing white wire leaving it intact but with a new ground nearer the MAF.
Just wondering if this makes a difference.