I dont have a voltmeter, but i disconnected my MAf sensor and gave it a little throttle and it still feels like it is misfiring. I changed the spark plugs on the driver side on block a week ago and cylinder 1 was burnt up but the following two cylinders, the plugs were clean.....................should i continue to change all the spark plugs...............?
Im thinking of getting a new MAF sensor anyways just because I dont know when was the last time they replaced the one im using now.
what happen if it way over like 2,000 rpm is reading 2.0
reading at 2,000 rpm at 2.0 v would that make it bog down i took the test while i was driving
The air flow while driving will be considerably greater than when the transmission is in Park or Neutral. As the air flow increases the MAF sensor voltage increases. I don't have any voltages except for Park but 2.0 v at 2,000 rpm in drive may be normal.
How many miles since the fuel filter has been replaced? Have you measured the fuel pressure?
Background
A nonfunctional mass air flow (MAF) sensor can significantly degrade engine performance. The PCM utilizes the MAF sensor output voltage to determine engine load which is used to adjust the air/fuel ratio during acceleration. The typical engine performance symptoms caused by a dirty or defective MAF sensor are lack of power and hesitation during acceleration. The MAF sensor element wires become dirty with age and become contaminated from excessively oiled air filters. Cleaning the element with MAF sensor cleaner should be performed frequently and often will cure MAF related engine performance issues.
Testing
With the MAF sensor electrical connector connected backprobe the sensor signal (light blue/red wire) and the sensor return (tan/light blue wire) at the connector.
Connect the positive lead of a voltmeter to the sensor signal and the negative lead to the return.
With the parking brake set and the gear selector in Park start the engine.
Monitor the MAF sensor output voltage while increasing engine speed. The voltage should increase smoothly with no dropouts as the engine speed increases. Listed below are representative values.
RPM Voltage
550 0.8
1000 1.0
1500 1.25
2000 1.4
2500 1.55
3000 1.65
3500 1.9
4000 2.1
Light Blue/Red stripe wire should be the MAF sensor signal
Tan/Light Blue stripe wire should be the MAF sensor return
Measure the voltage between the above two wires while the MAF sensor is connected and the engine is running at idle speed. Then increase the engine speed and see how the voltage changes. The OHV V6 MAF sensor is not the same as my SOHC V6 MAF sensor so the values will be different.