Hey guys, hopefully one of you can help us out. Here's the issue.
My dad has a 1994 Ford Econoline E350 with the 460 engine and an automatic trans. The van has about 76,000 miles on it.
The van developed an intermittent miss after sitting for about 8 months. While driving the van will run very rough and miss intermittently. It was like it wasn't taking fuel either. We took it to the local dealership and they have replaced the following.
Mass Air Flow Sensors (3)
Throttle Position Sensor
Distributor, Cap & Button
Plugs & Wires
Coolant Temp Sensor
The fuel filter and fuel pump fixed the problem with it not taking fuel under acceleration. So that part was fixed, but the intermittent miss is still there. It is like you can't press on the gas to pull a hill or it will just want to cut out.
Here's the kicker, you can unplug the MAF sensor and it will throw a Check Engine Light, and the miss goes away. You plug it back up and the check engine light goes back off and the miss immediately returns.
Anyone out there with any ideas, please let us know. He doesn't want to blow a bunch more money at the dealership
thanks for your help in advance.