How many of you have cleaned your MAS (Mass Airflow Sensor) lately? The other day my MIL came on. The code was p0171. (lean on bank 1 sensor
1). Well after looking around on the Internet I came to a conclusion that I should try cleaning the MAS. Well after I cleaned it my truck (96 4x4 Tacoma) ran like a freakin' race car. The previous owner had replaced the exhaust with a better one and I'm using a K&N air filter but the truck was just running like crap. It's the first 4 cyl that I've had in a long time I just blamed the poor performance, and delay of power on the size of the engine.Just curious if anyone else has seen this happen. I can't imagine how many people are driving with dirty MASs and not realizing the difference it makes.
For anyone that wants to try it I just used brake cleaner because it's fairly clean and doesn't leave any type of residue. Also, if you try it, make sure that you are cleaning the tiny little wires inside of the MAS. Some people mistake some of the external parts of the sensor for these wires.... (Mine was really obvious).
Anyway, I'd like to hear what kind of results others see from cleaning it.
Good luck, Dante