gvm

I have read a number of posts about this problem but as yet, there seems to be little certainty about the cause of the problem. I've just been on a driving holiday and so have more information that might help diagnose the problem.

The problem is that, after cruise control has been in use for prolonged periods, eg 1 hour, at high speeds, eg 100 -110 kmph, the engine sometimes stalls when the speed drops to around 40kmph or 25 mph. (40 kmph is the lowest speed at which cruise control will normally operate but this fact might be sheer coincidence).

The new information I have is that the engine stalled even if cruise control is switched off prior to dropping the car's speed to the vicinity of 40kmph.

Previous posts have suggested the problem is caused by a faulty control computer, poor or blocked ventilation, an intermittent control motor. Can I have your opinions please? TIA ... Greg

PureDrifter

iTrader: (10)

ECU issue, replace.

PK_Celsior

iTrader: (18)

+1 i had to change out the ECU on my 95 beacuse of this problem.

gvm

Thanks for the replies. A replacement part appears available from
http://cgi.ebay.com/ebaymotors/LEXUS...71510005r25736

Can I be confident that purchasing from here will be safe and provide the correct part for my 1996, right hand drive, Australian car?
regards
Greg

hobojoe

Maybe now would be the time to upgrade to Say a Mines?

gvm

Maybe hobojoe; but what do people think about my question....

Scaritto

Sorry to bring up an old thread, but my 95 is doing this too. Can someone tell me where i can locate the ecu and where i can purchase one?

jrbump

I would try searching "LS400 ECU" on ebay, but that's just me.

PureDrifter

iTrader: (10)

if you search harder you can find the right part number to compare to.

Scaritto

I know where that large list is of part numbers is, i just don't know where the ecu is located in my car to find the part number of mine

gvm

It's a while since I went looking for mine but I'm pretty sure it was located above the accelerator pedal. Please let us know if the new ECU fixes it; I'm still living with the problem TIA.

FYI, there is also detailed information at this Australian LS400 forum,
http://au.lexusownersclub.com/forums...=1&#entry16046


cheers ... Greg

Scaritto

Aww thank you!