Testing Afm

[wlspn]

Goin bloody crazy since I put an RB25 in my R32 & it is overfuelling. Thinking AFM, O2 sensor, temp sensor, FPR or something along those lines so its just a process of elimination... With AFM got told to turn IGN on with AFM disconnected from intake (but still plugged in) & make sure hotwire is glowing. Have done this but cant see sweet FA. Does anyone know any specific tests for these? (voltage, resistance, etc) If so can you please include as much info as possible, like which pins to use, etc... Any help is appreciated. Cheers

[paulr33]

wow some whack ideas going on here

back to basics please

get nissan consult or find someone with it

and run a diag with the software

check the basics sensors and see whats up

the quickest, cheapest, easiest way to find out what sensors are mangled

the sensor should read 0.5v at key ON position and around 1.1v at idle

if you had consult, you would be able to check this, and it would even state

engine has fialed to start 2 times, check AFM signal etc (if it was toast)

to those who do engine swaps or are considering

this level of basic diagnostics is fundamental

you will waste so much time guessing and play swapsies of sensors

before you do engine swap get consult and check the basics

most guys in each state have consult, put up a post offering free beer for a quick consult check

the best $20 youll ever spend. save so much time, hassles and effort guessing whats wrong

[D_Stirls]

Have you tuned the AFM change because AFAIK the 3 pin pink and 5 pin green label AFM's have slightly different resolution and therefore will need to be tuned.

Edited October 9, 2009 by D_Stirls