I swapped out my intake for a Victor JR. since then Im running rich. I think the MAF sensor is off now. I have 1.50 volt on the signal wire at idle. Im pretty sure its suppose to be closer to .85 voltage. I believe the higher voltage is tell the ECU to dump more fuel. How can I fix this
Check the MAF connector for crud make sure its clean. Try unplugging MAF see if you notice a change.
Also run the MAF test procedure
The MAF has a voltage output that increases
with engine air flow. The mass air flow sensor has
0 volts output with key-on-engine-off and 0.50 to
0.80 volts at idle. The specifications will give the
specific voltage at idle. The output must increase
with engine RPM. A test drive is a good diagnostic
test for MAF sensors.
Snap wide open throttle test:
MAF sensors that become contaminated with
deposits don’t respond quickly to changes in air
flow. An easy test is to do a quick wide open throt-
tle acceleration test. The signal voltage must go
over 3.7 volts. Check sensors that don’t respond
properly.
MAF Sensor Test Drive:
A test drive is the best method of testing the MAF
sensor. The MAF signal should follow smoothly
with changes in engine speed. Watch for sudden
changes when engine speed is relatively steady.
The MAF output must be a smooth even increase as
engine speed increases.
MAF Values For a Typical Test Drive
KOEO 0.0 V
Idle 0.70 V
30 MPH 1.0-1.3 V
55 MPH 1.6-2.2 V