hi there, im cam
can you check 2 things for me.
1. The air filter, IF you have the bullet style air filter, i have seen these break and seperate and give the mass airflow sensor bad readings. when you inspect it, the nose cone will be seperating from the paper element.
2. FPDM (fuel pump driver module) this is what I am thinking the problem is.
There is a fuel pump driver module that controls the voltage to the fuel pump depending on engine load.
I have done so many of these, You can do a visual inspection. IT is located underneat the rear of the vehicle and bolted to the body around the spare tire area. They will corrode badly and you will actually see the body of it splitting from the rot and corrosion. IF you see this than replace the module. If it looks ok, than you will have to test it with a scan tool and fuel pressure
This is how you test the module:
1. Access the fuel pump connector.
2. First, verify that there is good battery voltage on the Pink/Black (PK/BK) wire from the Fuel Pump Driver Module (FPDM). If OK, monitor voltage between the PK/BK and Brown/White (BN/WH) wires leaving the fuel pump connected. Also monitor the fuel pressure.
3. Voltage will normally be about 6-8 V at idle and will increase with load on the engine.
4. When the problem is occurring, check the fuel pressure vs. voltage to the fuel pump. If pressure is dropping, but voltage is the same or increasing, check the connections right at the fuel pump. If OK, drop the fuel tank, inspect the lines internally and replace the fuel pump as needed. If fuel pressure is dropping and the voltage to the pump is dropping, check the fuel pump monitor wire LB/OG to pin 30 of C175b and the fuel pump Command wire WH/YE to pin 62 of C175b for harness concerns, and if OK, suspect a failed FPDM.
I hope this info helps you,
If i can be of any more assistance than let me know!
I appreciate positive reviews!