Just started my LS400 MK4 1999 and it now makes an extremely loud whining noise. This occurred quite randomly as it was not making noise the other day.
Any ideas what it could be?
The noise gets worse as the RPMs increase and the pitch gets higher. Power steering seems to be working fine and have not had battery issues as of yet.
Can anyone advise on how best to get confirmation of the first date of registration,I purchased a LS400 which was registered in the Netherlands on I believe 20th October 1995 from a record in the service book however DVLA insist I obtain a letter from a owners club registered on their web site and it appears no Lexus club is,this is all that's preventing registration. Any information would be most welcome.
A few months ago at 75k odd miles I replaced my spark plugs from my mk4.
I couldn't see any evidence of past replacement and was puzzled by very worn plugs bearing the NGK brand in pale blue. They looked old. I did a write up; that's in the how to section.
What I put in were Denso plugs and that's what I'd expected to remove. All the mileage checked out.
However, having a trawl through the handbook I spy that original fitment listed as Denso SK20R11...and NGK IFR6A11.
That solves the riddle: I removed the original NGKs.
I've got a problem with the idle on my 96 LS400, 145k miles. The car is up to date on its servicing and there are no warning lights on. The car starts fine, hot or cold, and drives normally without complaint under any driving conditions, except when the problem occurs. After a run of about an hour or more at motorway speeds, when the car is coming off the m-way and slowing down at the end of the slip road, engine revs will occaisonally drop so low that the engine cuts out. It will re-start from neutral without any problem and will not repeat this until it's on another long run. So, it won't cut out again when I stop at the next junction or set of lights. It only seems to be a problem slowing down after the m-way run. On a regualr trip I do, I've tried running with the cruise control off (normally it's on on m-ways) but this makes no difference, the problem remains.
I don't know if this is simply a problem with the idle speed adjustment - it ticks over at at about 400 RPM which I think is a little low - or somethink linked to idel air control or temp sensors.
Any pointers would be welcome.
Hi all. My new LS400 has no working radio. When I bought the car the aerial didn't operate so I put it down to this.
Upon investigation this afternoon it seems the aerial was disconnected for some reason as once I plugged the connecter back in and switched on the stereo it popped out smoothly and fully.
However I now only get static on all frequency's. It's finding nothing. Any ideas on the issue or possible fix?
Thanks again everyone for your help!