03-27-2018, 07:37 AM
The MAF appears to be good on my 1999, 1.6L Tracker. Here are the test results. The wire colors did not completely match your descriptions:
1. Power wire (left most as you look at the connector when standing in front of the car): 12.06 v (battery read 12.21 v).
2. Middle pin (output wire?) - 1.4 v with key off. After key on:
a. 2.17 v immediately after key on and engine running at idle (but not yet to operating temp).
b. 2.00 v at 800 RPM
c. 2.7 v at 4000 RPM (manual transmission in neutral and simply revving the engine to 4000 rpm).
3. Right wire: .74 mV (practically 0 v)
Also - I did notice a temporary vibration when I tapped versus simply pressing the gas peddle. I was tapping the gas peddle to bring the engine down to idle after start and some warm up. If I simply pressed the gas peddle with increasing pressure, the rev up was smooth with no vibration.
What's next? Injectors?
Thanks,
Joe Tracker
1. Power wire (left most as you look at the connector when standing in front of the car): 12.06 v (battery read 12.21 v).
2. Middle pin (output wire?) - 1.4 v with key off. After key on:
a. 2.17 v immediately after key on and engine running at idle (but not yet to operating temp).
b. 2.00 v at 800 RPM
c. 2.7 v at 4000 RPM (manual transmission in neutral and simply revving the engine to 4000 rpm).
3. Right wire: .74 mV (practically 0 v)
Also - I did notice a temporary vibration when I tapped versus simply pressing the gas peddle. I was tapping the gas peddle to bring the engine down to idle after start and some warm up. If I simply pressed the gas peddle with increasing pressure, the rev up was smooth with no vibration.
What's next? Injectors?
Thanks,
Joe Tracker