Engine dies on Auto.
 

Problem with our engines.
I have an auto, one day I started the car and the engine shut down after a few seconds due to low RPMs. It only happened once, but now I have noticed that sometimes when I cold start(1200)or idle(600--500) the RPM is lower than before and not stable.*
I'm a mechanic but still new in the school.*
I thought it was the dirty air filter so I washed them and the RPM is about 1400 cold start.*
Please help me figure it out.*

Check your vac lines

you washed your paper air filters???

K&N cold air intake filters.

How do you check on that.

Take it to the Dealer since your still under warranty

Over 40000 miles now. No more warranty.

Have them diagnose it and go from there.

you got your maf sensors dirty, you didn't let your air filters dry, if you even washed them properly

so how do yo clean mass air flow sensor, unplug them then use air blower?

go to any auto store and buy mass air flow sensor cleaner. lol.

just go to unplug + remove em, be very gentle and very careful, when handling them.

I am currently having the same issue. I couldn't find any leaks.

DO NOT blow air on the sensors. It won't clean them and could damage them if the air pressure is high. Just buy the Air flow sensor cleaner. I used car cleaner on mine, but someone said that is too harsh. Don't know if that true or not.

Thanks will do.

Did you do anything with you O2 sensors?