LEXTEK1

Well, actually I did not say that. But, the ECU is not where I would start the diagnosis on the issue. Let the Dealer do all he's going to do! You get new parts in the tune up area which are not cheap. I will warn you to not put aftermarket wires, caps, rotors or plugs in it. Do it once and do it with Denso....

They will pull their hair out by Friday evening. My guess is they wont have a clue! If they cant figure it out I will try to help you. I have an idea what it is and it will require some hands on to fix, a few parts from a Lexus Dealer and a bit of time!

LEXTEK1

Put a set of late (06) 18" Chrome LS wheel and tint those windows and that would be a really nice ride IMHO, lol. The body really still looks nice! I dont know what the inside looks like since you cleaned it up....

The black, 450k 91 in my picture here has the 06 GS430, non chrome wheel. I like that it is updated but didn't want the chromie/flashy thing going on. In my opinion the chrome on black and all you see is wheels. But that white one would look great!

Oddly enough my daily driver is a 2000 F250 7.3l and don't ask me to give it up!

SkulCracka

mmm F250 sweet.

sorry to hyjack the thread a little but seems you got her fixed and are now selling her.

heh anyway. hey Tek im really thinking its the motor mount bushings now. it just runs to smooth..... ? rpms dont jump when its doing the jerking between 40 - 50mph cruising. oh and i cant control what they put on her for parts i will ask for all the old ones though incase they do rip them out..... now your kinda scaring me. LOL

LEXTEK1

Your description of the problem does not lend itself to motor mounts in my opinion. But, if you look at my ranking, I'm still a Rookie too!

Let us know how it turns out.

SkulCracka

Lexus Master Diagnostic Specialist
Lextek Automotive
Friendswood, Texas

This tells me your not.... LOL

SkulCracka

ill start a new thread and post upthe other little quircks in it aswell.

ifixcars1

03 f250 6.0L. 17 MPG loaded in town, pulling a trailer. I'm not surrendering that one either. Your cool Skul, I'm done with this thread. I agree on the wheels. If I could only keep her.

fluxedup

Can anyone give me the exact values for the caps? My ls is the car with ac and I would like to drive her to get the new caps, my land cruiser has no ac and its 20 minutes to the Fry's through 105+ degree heat. Thanks
MLM

SkulCracka

pull the ecu. see which ones are leaking go ahead and clean it up. mark down the uf rating for the caps. reinstall it. go get teh caps needed. then put them in.

deanshark

Like SkulCracka said, you need to see which caps you need, write it down, and go get them. I can see wanting to drive with some A/C but come on dude, it's 20 minutes being hot, it ain't gonna kill ya. I had to drain my A/C last winter when I fixed my heat so this whole summer (one of the hottest we've ever had) I went without A/C. I've worked 30 years with insulation in hot attics up to 150*-170* for 8-10 hours straight, and you're complaining about 20 minutes. You need to pull the ECU out. How long is that gonna take you, 20 minutes?

Ya don't like the heat, get out of the fire.

fluxedup

Thanks for the help. It would seem you have worked for thirty years on just about everything.Must be rough.

deanshark

Yeah it's rough awright, working 2 jobs for so many years and then side work working on cars on the weekends just to support a family. (cuz the dumb broad didn't work) That's why I got divorced after my 3 kids got older, so I could relax.
But anyway, let us know how it works out after ya get the caps and put them in.

fluxedup

Well, looked at the innards of the ecu, 94 is totally different, had about a dozen caps that look ready to go but they are so small and so tightly soldered to the board that I think maybe i'll see if I can find a replacement ecu from a junkyard. Weather finally broke and I am back in the landcruiser anyway. This car has been the most frustrating peice of ---- I have owned. Mechanically it's great, electrically, its a nightmare.

Everyone needs to have an ex who refused to work........it builds character. (just in case it does nt show, this is offered up with sarcasm. Really wouldnt wish lazy ex syndrome on anyone.........)

Unclebob9

I have a 92 LS400, it has been driving me nuts for over a year now. Runs fine for awhile, then Jerks (like the fuel pump shuts off), was worse going up hill, The traction control light has been on for years, power weak, fuel mileage dropped by about 3-4 MPG.
Been reading the Forums for years trying to figure out the problem. Every time I did something it got partially better then reverted. changed plugs & wires, changed fuel filter, changed fuel pump relay resistor. For some reason it would have much more power when I bypassed the fuel relay resistor.
a few days ago I came across a Forum article on how the Computer capacitors were junk in the 89-97 toyota's and often would leak and damage the control board.
So I ordered the Capacitors for mine (really cheap, like $5 for 10 of them). took about an hour to remove the old ones and solder in the new ones (I am a fair solderer not a good one). Put it in the car and 2 of them popped (I did not know there was a positive and negative terminal, so I think I put them in backwards) Luckily I had ordered some extras (because I have a spare computer, ECU, for the car and figured I would do it as well. Anyway, after replacing the 2 that popped (in the same direction as the 7 that did not pop) I put the ECU back in and the car is finally running like it used to. And the traction light is no longer on.
If you do a search for LS400 ECU repair, you will find the exact instructions and the list of the capacitors for every year and model.
Hope this helps: Bob

dicer

I removed what I posted I didn't read through the whole thread.