Q: Running in failure mode - 1995 Ford E-350 Econoline Club Wagon

asked by on

My van was running in failure mode today. The engine is running lean at about 290K with too little fuel and too much air. I’m thinking about installing new injectors. I installed new O2 sensors, new Mass Air Flow sensor and it actually idles better with the MAF disconnected. There is low voltage at the MAF. But a previous test showed it was OK. I am planning to install a new Idle Air Control and a distributor 351 Windsor. Do you have any suggestions for me?

I would first check voltage to the MAF - it should be 5 volts. Also check ground quality for the MAF. Since the fuel injection computer gets airflow volume data, a bad MAF reading will mis-instruct the injection computer. Also possible you have a bad "new" MAF, but more likely with this age and mileage to have a bad electrical path (corrosion, connector, bad ground, etc.). If the MAF tested with proper voltage earlier, walk back through what you touched since. Something changed! If you would like a certified technician from YourMechanic can assist you in diagnosis, and repairing the failed electrical components.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Running in failure mode - 1995 Ford E-350 Econoline Club Wagon

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Fix vacuum leak and reset idle.

The idle should not be adjusted unless it has been tampered with. The idle is controlled by the idle air control valve. The vacuum leak once identified and fixed should correct any idle problems you have.

Q: Lights come on and minivan turns off

It sounds like a bad electrical connection is causing a loss of power somewhere. It can be very challenging to catch when it occurs so intermittently. Check the basics first. Test to verify a known good battery charged to at...

Q: What is proper reading on wires inside distributor?

11.88 is low for an automotive battery. A reading within .2 volts of the battery can be expected. It may just be running out of juice from cranking and will need to be charged fully before it is put to...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.