r0llinlacss
Member
So I picked up a 98 Expedition Eddie Bauer for cheap thinking it needed a fuel pump. It had no fuel pressure. It cranks and cranks but never fires.
I replaced the fuel pump but before I put it back in the tank, I decided to test it on the car. This is when I started noticing bad stuff.
The fuel pump does not kick on. I tested the wires with a test light and it's not getting power. The fuse is good. Have not checked the relay.
- No power to fuel pump
- All fuses under the hood are hot all the time, even without the key, and a good half of them under the dash are also hot all the time
- Running board lights and interior lights stay on all the time
- Injectors are not firing (tested with fuel injector test nodes) even during cranking
- Scanner will not communicate with the computer, and acts weird
It had a melted/shorted out tach wire for the remote start, which is connected to a coil, which I think may have fried the ECU.
So, I'm leaning toward a bad ECU or could it be something else? Does anti-theft cut fuel? I had a friend check out the key and he said it does have a chip in it, but there's no theft light in the cluster. There's also a key wrapped under the dash for the remote start, so I think it does have the anti-theft.
Could be a bad GEM module?
Does an ECU require programming/flashing if I were to buy a used one?
Want to get on the right track before I go spending more money. The guy I got it from did have it running, but he said with a bad misfire and it would bog out when pressing the gas. It died at the gas station and he gave up on it.
Any input appreciated. Thanks!
I replaced the fuel pump but before I put it back in the tank, I decided to test it on the car. This is when I started noticing bad stuff.
The fuel pump does not kick on. I tested the wires with a test light and it's not getting power. The fuse is good. Have not checked the relay.
- No power to fuel pump
- All fuses under the hood are hot all the time, even without the key, and a good half of them under the dash are also hot all the time
- Running board lights and interior lights stay on all the time
- Injectors are not firing (tested with fuel injector test nodes) even during cranking
- Scanner will not communicate with the computer, and acts weird
It had a melted/shorted out tach wire for the remote start, which is connected to a coil, which I think may have fried the ECU.
So, I'm leaning toward a bad ECU or could it be something else? Does anti-theft cut fuel? I had a friend check out the key and he said it does have a chip in it, but there's no theft light in the cluster. There's also a key wrapped under the dash for the remote start, so I think it does have the anti-theft.
Could be a bad GEM module?
Does an ECU require programming/flashing if I were to buy a used one?
Want to get on the right track before I go spending more money. The guy I got it from did have it running, but he said with a bad misfire and it would bog out when pressing the gas. It died at the gas station and he gave up on it.
Any input appreciated. Thanks!
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