Can Replacement Dual-Path ECU Service Pack F58VV Be Used in Place of Older F9489 ECU

Updated 08/14/2024 | Published 08/07/2024

Question:

I currently have an F9489 ECU installed, along with a 150psi tank. The remote has horrible distance I cant control it from inside the truck, and its starting to die. I have to push on the back of the remote just to be able to get the lights to turn on. Is the F58VV a good replacement for the F9489?

asked by: Jason B

Expert Reply:

Thanks for reaching out, Jason!

Yes, the Replacement Dual-Path ECU Service Pack # F58VV is what you want for your older F9489 ECU.

expert reply by: Jon G

Jay

8/7/2024

Perfect! Thank you very much! And that was FAST!!!

Jon G.

8/7/2024

@Jay Happy to help out!

Jason B.

8/14/2024

After looking at the installation procedures, I see there is a red/white wire that powers the compressor. I already have a compressor wired, so I won't need to connect the red/white wire to power mine. But will this give me any issues if I don't connect it and cap it off?

Jon G.

8/14/2024

@JasonB You will need to connect that wire harness from the Dual-Path ECU Service Pack # F58VV to your compressor so they can communicate with each other. If you don't connect that wire then the ECU won't be able to tell the compressor to turn on.

Jason B.

8/14/2024

@JonG My compressor runs every time the tank gets below 120 psi because it's hardwired in and has a pressure switch.

Jon G.

8/14/2024

@JasonB I reached out to my contact at Firestone to double check and they said the ECU has a pressure sensor in it so you'll need to switch the connection to the ECU instead so it works properly.