M35 Afm

[jnr32r]

Hey Guys,

I hate AFMs, they hate me too, ever since my early R32 days i have had nothing but trouble with them.

After 6 months of owning the Stagea my first AFM failed, didnt think much of it then and replaced it with a second hand one which came from a Stagea that had 21,000Km on it. 2 months later it blows again. At this stage i thought maybe its got to do with the blocked BOV plate, so i put it back to completely std and bought another second hand one, 2 weeks later it blows too !

What could be causing this to happen, when the cars only mod is a slightly larger exhaust? 2 of the times it blew it happened as I was under full standard boost and 100% throttle.

In between the first and second AFM i also bouught one from the US brand new, the part nunber is supposed to be the same however once boost comes on it dumps a shite load of fuel, shudders and blows black smoke. COntacted the supplier and they said they sent me the right one, but i think this is more for a VQ30DE or something like that non-turbo.

Any ideas what could caused it to blow AFM after AFM?

Cheers

[scotty nm35]

Perhaps there's a wiring fault? Most would just put it down to old age on a frail hotwire or an over oiled air filter but these are complex afm's with a chip inside doing the calculations, could be anything.

Either way you have had a bad run, I haven't had an issue with mine in a year and a half and it runs way out of resolution daily. Any mods to your intake we should know about?

The other option is to ditch the afm... *Cracks open can of worms*

[pixel8r]

Do you have an oiled air filter (ie. K&N) ? I've had an AFM pack up because of that.

Are you sure the AFM is faulty? Try taking it out and running metho or contact cleaner over the wires that hang down inside where the air goes through (dont open up the electrics part!!) then let it dry completely and put it back in the car. Make sure not to touch any of the contacts inside, only use contact cleaner spray on them, nothing else.

Sometimes the sensor gets coated in oil from the air filter or other things that made it through the filter and it wont work as well. contact cleaner or methylated spirits should fix it up.

[jnr32r]

Car is 100% standard. I put it down to AFM for a few reasons, diagnosis shows this code, car stalls when plug is connected to AFM but runs on limp mode once disconnected and also works on american AFM which is out of calibration. I will try the cleaning method but i have my doubts.

Thanks gents...

[Jetwreck]

If it is the afm probably best to go with Nissan genuine parts as not only has there been an update but you will get a years warranty

[Duncan]

hmmm killing many of them....surely a short in the wiring to the afm. Try and check the wiring as far back as you can. Also have a look at the ECU harness for the AFM