gen2 3sgte jdm afm

**ST185GT4** · 18-10-2011, 12:53 AM

Hi Guys,

I keep getting errors codes for the afm and at times AT sensor.

The 4 seems to have a mind of its own. Cold start bad (and almost dies and gets better at temp), sometimes good cold start but looses power after 10-15 km's, nearly dies then drives normal (sort of it looses power up top but not always or at similar revs/load)..

It's nuts.

Now it has an O2 sensor error.

What the???

Should I get a new AFM?

Will replace the O2 sensor with a spare tomorrow?

Need a reliable car for work, but, want to keep the 4. Help, i want to paint my beast but don't have enough time to get it running right agghhhhh........

**thechuckster** · 18-10-2011, 04:26 AM

I found inside my AFM (ADM ST185) that the metal coating on the printed circuit board (inside the AFM) was corroded - kept getting AFM errors and random non-running episodes (died about 3km from home) after I built the motor and was out testing it.

I ended up bypassing the corroded section with some fine wire (I cut up some flat IDE cabling salvaged out of an old PC) and carefully soldered it between the connector and other parts in the AFM. AIT sensor is also in the AFM and one of wires connecting it was corroded.

Mind you, your problem could just be the connector/plug being loose on the AFM.

No idea about the O2 sensor but on my car, the plug connecting it is missing the locking tab and it is in a spot that gets fairly warm.

**ST185GT4** · 02-11-2011, 10:37 PM

Thanks chuckster the inside (under the cover) of the afm needed a clean on that sliding bit. Its running better but still has an issue breifly when the temps cold air and motor.

**MWP** · 03-11-2011, 11:55 PM

Is your cold start injector working?

**punkture** · 04-11-2011, 11:32 AM

I have a spare gen 2 afm if you like

**ST185GT4** · 04-11-2011, 05:51 PM

Thanks Punkture,
Yes please!

**ST185GT4** · 20-02-2012, 11:16 PM

Just a quick note to let you all know I fixed the problem! Hoo-ray!
I found two tabs under the cover had broken their connection. I resoldered them and all is good......
Apart from the $85 bucks I gave punkture for his spare AFM that never arrived, douche. That's just not the Toymods way. I have received heaps of help and support here and your my first let down.