Cleaned AFM/MAF 1uzfe Now Not running right

**Cuzzo** · 31-08-2010, 05:42 PM

Hi,

I cleaned the afm or maf whatever its called on my 1uz (ls400) motor and the motor decided not to run too well, and now has the occasional misfire unless i free rev it to the redline.

I cleaned the honeycomb type stuff with carbie cleaner and the afm/maf unit with crc contact cleaner.

The motor decided not the start and idle, then after that sorting it self out it will run and drive fine untill randomly it will either stall or erratic idle.

Have i stuffed it?
Where can i get another?
I havent yet blown it out with compressed air, would this fix it?

Anyone got a spare?

Thanks,
Adam

**Sciflyer** · 31-08-2010, 05:47 PM

Take it for a decent drive to give it time to completely dry out, they can take a while.

Do not use compressed air

**Cuzzo** · 31-08-2010, 05:52 PM

i have taken it for a "good" drive and it did get a bit better.

Now its just doing it randomly.
I tried a heatgun on the whole system to dry things out (obviously not putting too much heat on it) but drive out from work today its still randomly stalling.

Would an ecu reset help things?

**JustCallMeOrlando** · 31-08-2010, 05:55 PM

Don't have a small air leak from where you put it back together?

**oldcorollas** · 31-08-2010, 06:44 PM

is it a hotwire type? might have gotten some crap on the wire.. they are pretty sensitive to the surface condition of th wire

can you whack a multimeter on the O2 sensor output and see if it is going lean/rich when it misfires and runs crap?

**cambelt** · 31-08-2010, 08:46 PM

Hi
Its the same as the 7M ones and they dont like being cleaned , I learnt this many years ago the hard way and have since just wiped them .
Just get the electronics part from a 7M , they are the same .
Dave

**CrUZida** · 01-09-2010, 09:52 AM

I've drowned mine in MAF cleaner before, didn't do it any harm, but I let it completely dry out before starting the car.

It was a specific MAF cleaner though, not carbie/throttle/contact cleaner.

**troysota** · 04-09-2010, 06:47 AM

All Carby Cleaners are manufactured with an Anti-Corrosion formula now.

Either use specific MAF Cleaner or Wolfchester Electrical Contact Cleaner.

Only clean them if they get coated in oil or gunk, ie Air Filter over oiling Kills Them.