Hey Guys I Been To Every Forum So Far About This And Haven't Had Any Help.. Can You Guys Please Help Me And Tell Me Whats Wrong With My Wiring.

[hcr32sky240sx]

Today i did some fooling around with different maf sensors..

today i took the n60 mafs off and out. I went and re-installed my stock rb20 mafs.

When i had the rb20 mafs wired up my car started right up with no starting fluid and started smooth but my idle was still high and now it started smoking black!!!

so i took the rb20 maf out and went back to the n60 mafs.

n60 mafs car wouldn't start without spraying starting fluid but once started and running i noticed the n60 mafs my car will not smoke black.

so one last time i went and re-installed the stock rb20 mafs again and car started right up smooth but was smoking black again..

and also while car running...

car running unpluggin the n60 mafs car will stall out....

car running unpluggin the rb20 mafs car will not stall out.

so what is going on guys? am I wiring my mafs wrong or something???

ecu is still not throwing any codes other than 55.

ok and this i just found out with some searching...

it seems lik when running the rb20 afm i just found out my rb20 maf is using a rb25 series 2 pigtail haress which i found out the colors are

White with Blue Trace - Ground

Orange with Black Trace- Signal

Black with White Trace - 12v Power

which tells me that is a series 2 rb25 pigtail afm

sooo hrmm yeah my rb20 maf is using a rb25 series 2 pigtail so sonmething is wrong.

so i'm guessing i wired something wrong.. Can you guys help me clear this up?

Edited March 27, 2008 by hcr32sky240sx

[r32woohoo]

sounds like you're running the wrong maf/afm then

rb20 ones have a green label on them with 4 wires

[Tao]

are you still using the stock ecu? I thought you had to have an aftermarket ecu(i.e. pfc) to use an other than stock MAF.

[hcr32sky240sx]

i have the right mafs its green label its j60 which is rb20 but the if u reaad my post.. the problem

my pigtail is an rb25 series 2 and the wire colors do not match.."

so bascilly all i want to know is how to wire the pigtal to my rb20 mafs harness..

is that so hard???

and yes its stock ecu

[Jmaac]

You cant use other AFM's without changing the VQ table in your ECU - i.e. the voltages are scaled differently

R32 AFM is the same as R33 S1 AFM

Wire A - Not Connected

Wire B - Signal

Wire C - 12v Ground

Wire D - Signal Ground

Wire E - 12v Power

R33 S2 AFM is the same size and calibration as the other two

White with Blue Trace - Ground

Orange with Black Trace - Signal

Black with White Trace - 12v Power

Hope that helps

[R33S2]

Im sorry but what motor is it RB20, RB25 or RB26? and what ECU is it?

I ask because it sounds like one of those AFMs worked, one was right for start up but too rich for normal running and the other the opposite, if the second one ran properly it may be the start up componants maybe faulty, check the ACC valve etc (I say etc because there are others that I cant remember ATM)

[Jmaac]

What have you done with the two ground signals?