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Discussion Starter · #1 · (Edited)
Hello all on the forum. I'm new here this is my 1ST post looking for some help.

So I had a scat and decided to change it over to a hellcat of the same year 2020.

Motor 6.2L

The shop doing the swap said everything was good to go.

Had the car for about 3 weeks and the fuel pump went out (main) it also melted the fuel module behind the passenger trunk carpet.

Replaced both with new oem parts as well as upgraded connector that the shop cut off the old connector as it was charred and melted. They soldered the new connector to the matching wires. We'll was still having start issues.
Had someone trouble shoot as much as they knew and found the 2 wires going to the fuel module (blue/orange) were wired backwards sending 13+ volts to the other orange blue low voltage wire and low voltage to the high voltage side. Got that worked out then the alternator wire positive had melted the plastic and the alt was bad. Got that changed from a scat motor (was told by shop they were the same) voltage is sitting around 13.4 to 13.7 unless you really mash it and get up on the car it will jump to 14.4 14.5. The as it gets back to regular driving it drops back to 13.5 to 13.8. While this is going on the new fuel pump and everything is working no light no codes. But the module (2nd one) gets extremely hot and they feel pump relay can not even be held it gets so hot (r42 relay) also I noticed the whole back fuse box is getting extremely hot even relays that are not on at the time. Used multimeter to check grounds front to back they all read good and voltage stays the same front to back. I'm at the point where I paid for all this and can't drive my car as it keeps burning up the fuel module and the fuel pump was not a cheap replacement in fact nothing has been cheap.

I'm open to any and all advice or ideas of what's causing this.

All codes will clear except the low voltage code.

Also with the 2nd fuel module it threw the code for high voltage bank A before the two blue/orange wires were swapped correctly

Tomorrow the fuse box is getting looked at top and underneath to make sure there is no issue that we can find.


Please anyone ......help 馃檹 馃様
 

Registered
Charger SRT Hellcat
Joined
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Hello all on the forum. I'm new here this is my 1ST post looking for some help.

So I had a scat and decided to change it over to a hellcat of the same year 2020.

Motor 6.2L

The shop doing the swap said everything was good to go.

Had the car for about 3 weeks and the fuel pump went out (main) it also melted the fuel module behind the passenger trunk carpet.

Replaced both with new oem parts as well as upgraded connector that the shop cut off the old connector as it was charred and melted. They soldered the new connector to the matching wires. We'll was still having start issues.
Had someone trouble shoot as much as they knew and found the 2 wires going to the fuel module (blue/orange) were wired backwards sending 13+ volts to the other orange blue low voltage wire and low voltage to the high voltage side. Got that worked out then the alternator wire positive had melted the plastic and the alt was bad. Got that changed from a scat motor (was told by shop they were the same) voltage is sitting around 13.4 to 13.7 unless you really mash it and get up on the car it will jump to 14.4 14.5. The as it gets back to regular driving it drops back to 13.5 to 13.8. While this is going on the new fuel pump and everything is working no light no codes. But the module (2nd one) gets extremely hot and they feel pump relay can not even be held it gets so hot (r42 relay) also I noticed the whole back fuse box is getting extremely hot even relays that are not on at the time. Used multimeter to check grounds front to back they all read good and voltage stays the same front to back. I'm at the point where I paid for all this and can't drive my car as it keeps burning up the fuel module and the fuel pump was not a cheap replacement in fact nothing has been cheap.

I'm open to any and all advice or ideas of what's causing this.

All codes will clear except the low voltage code.

Also with the 2nd fuel module it threw the code for high voltage bank A before the two blue/orange wires were swapped correctly

Tomorrow the fuse box is getting looked at top and underneath to make sure there is no issue that we can find.


Please anyone ......help 馃檹 馃様
Which fuel pump are you running ?
Dual pump?
 
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