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This was the fuse I put on the fuel pump rewire, don't know what caused it, but I got home. Weird part is that when I turn the key to off, the car still runs, that's what got me to trouble shoot and found this.
Well, it's a home made kit, and I ran a super heavy duty relay with 12 gauge wire all the way until the fuel pump cover with 30amp, I didn't want to drill out the cover to run it all the way. I'll double check the ground, are you talking about the ground at the relay or the fuel pump assembly? It is a cheap china fuse, I've put in another inline fuse with 20amp that is a better one, so I am gonna drive on that and keep an eye on it. what would cause the pump to draw more amp? dirty fuel filter? low fuel?
by the way, why would the car still run with key shut off? Let's assume the wire is fused together and the pump gets power constantly. But shouldn't the ECU shut off injectors when the key is pulled? or cut the ignition when the key is pulled? I don't understand this part...
I would never run a 30A. That's why it burned up. I would rewire the whole thing with a high quality relay. Make sure the grounds are clean and you scrape down to bare metal at the ground. Also you should pull the pump out and run new power and ground wires straight to the pump.
The key issue sounds like an ignition switch fault, or a turbo timer. Also check the MPI main relay make sure it's clicking like it should.
Okay, I'll try the suggestions, thanks!! Here is the weird part, when I turn the key off and pull the key out of ign., the radio went off, the ecu even clicked off too??!! I do have fuse at the MPI line and when checked, it was okay. I've replaced the fuse with better quality and 20amp, might reduce to 15amp and the car seems to shut off and start normally now.
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