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Is my mass air flow sensor bad?
My 1995 nissan 200sx mass air flow sensor seems to be running under specified voltage. At idle the book says it is supposed to be 1.3 to 1.7 volts at idle and 4.0 volts at 4,000 rpm. When I tested the voltage, I was only getting 0.2 at idle without much change at 4,000 rpm. I have noticed over about the past 3 or 4 months that the car's power on hills has decreased and the car needs to downshift on hills in which i used to go up without downshifting at the same speed. I was wondering if the airflow sensor was bad or not since the sensor is going to cost me about $200.
4 Answers
- Evil CLv 71 decade agoFavorite Answer
Look inside the MAF sensor to see if dust or debris has built up on the heated wire located in the top center of the baffle of the sensor.
- satorninoLv 44 years ago
Mass Airflow Sensor cleansing & testing indicators lack of means Bucking/Jerking Spark Knock/Detonation Hesitation/Surge on Acceleration See hyperlinks decrease than for cleansing and testing:
- BoringLv 51 decade ago
Usually a faulty MAF sensor will give you a check engine light. You may just need a tune up. New plugs, air filter and fuel filter.
- LEXUSRYLv 51 decade ago
IT IS BAD ACCORDING TO YOUR READING. TO TEST IT ACCURATELY, YOU NEED A LAB SCOPE TO TEST THE SENSOR
Source(s): 22 YEARS AUTO REPAIR EXPERIENCE
