TaninAuto

We would be happy to assist you! Contact us any time with questions and if it is possible to expedite the repairs needed we can do that for you. You can also upgrade shipping to help it come and go a bit faster too, since we are based in WI.

If you call, make sure to mention you are a Club Lexus friend!

Rdrcr

Awesome. Thank you!

Mike

jbtvt

I just did all the caps on my 1999 LS400, can confirm that they were still the quaternary ammonium from the letter markings on the side of PF(M) and PR(M). Did the traction computer while I was in there even though they weren't QA. The caps looked fine, and unfortunately redoing them didn't solve my cyl 6 misfire. The random misfire code hasn't yet returned but I'm sure it will. Already covered all the basics, don't know where to go from here but will have to dig into the wiring most likely, sucks. Least I don't have to worry about my board corroding now.

Big thanks to Yamae for all the contributions and keeping up with the barrage of questions, and to LScowboy for starting it. I made a video of the procedure for a single cap replacement. Will keep it ad free for a few days so members can get first look without being tempted to run to Home Depot for lawn supplies.

dicer

Its a bit easier if you use solder wick or a solder sucker on that back side and usually it removes all the solder so you can easily remove the old capacitor and install the new one, and if there is some blockage of the hole just solder wick it a bit more to clear it.

chea

hi all, I'm new here having just found this very interesting post. I have a sc400 and I get the warning message on the screen to say electrical failure in Japanese but when I run diagnostics I don't get any faults, efi ok and ect ok. does this sound like an ecu problem? and whould what is described here be the same on a soarer ? any advice would be greatly received

chea

sorry forgot to say its a uzz31 with 1uz-fe

RA40

iTrader: (6)

Likely the ECU. What year Soarer?

chea

its a 1991

chea

can I use an ECU from LS 400 in an SC400?

RA40

iTrader: (6)

Not sure if running different ECU's from another model has been attempted. My suggestion would be to remove the ECU and inspect for any damage on the circuit board. If it is ok, then having the capacitors replaced is the easier option.

dicer

As long as all the numbers are the same.

FixerUpper

Anywhere in Vancouver, BC that does this?

chea

thanks.....that's good to know as sc parts are getting hard to find

qball_ky

I just did the Cap replacement in 94 LS400 Engine ECU. That solved a no start issue. The Cruise continues to not work. There are no DTC for it.

Are there Caps in the Cruise ECU, that could be replaced?

L8274Jones

Hey Guys Just had to share here.... My ECU seemed to be OK and just before it started acting up . I had one of the guys here do this job for me and I'm thrilled to tell you it made a DIFFERENT Car out of my LS400 sedan..... I'm working on something else at this time , totally unrelated but when I got mine back with the Switch all done. Everything works like a new vehicle. This Forum is the greatest spot I have ever experienced since my Advanced Auto classes in High School. I had a great teacher there and have saved tons on my stuff over the years and family and friends too .Yamae, and LS Cowboy !! You guys are magicians with this stuff ..... Quite a few other guys are really good here too .
L8274Jones