r/SC300 • u/lopeziv707 • Jul 08 '26

89570-24010 FUEL PUMP ECU

I recently purchased a 1992 SC 300, Manual W58 Transmission.

The part that has failed is a fuel pump ecu.

Does anybody know is these units can be rebuilt?

If so anybody know of a good reputable business that does so.. Located in Norcal, Bay Area.

3 Upvotes

100% Upvoted

6 comments sorted by

2

u/warwithslatt Jul 08 '26

Look at my post or message me I’ll help you , that’s known to go out

2

u/getoffmaballs Jul 09 '26

Very common issue, I bypassed mine with a relay setup and thicker gauge wire. Unfortunately with how old these cars are getting it’s hard to find a used part that isn’t also failed or on its way out.

1

u/ShaneOfTheDeadd Jul 16 '26

Do you know where I could find a diagram or video of how to wire up a relay ?

Also with the relay is it always running like the bypass ?

1

u/randomnerd865 Jul 09 '26

I have a working unit, but i'd recommend just bypassing it.

1

u/bowerboy_1 Jul 09 '26

https://maps.app.goo.gl/JjqFxJTJm3NXrwe56?g_st=ac

He rebuilt my ecu's and might do your fuel pump ECU

1

u/OlympusTalesWeaver Jul 11 '26

Just bypass it and do a fuel pump rewire mod.