L3xu5 Mum

Thanks again. The mechanic removed throttle body and soaked it overnight and refitted it. Still same problem - he thinks new throttle body needed (but he also thought it was the timing belt and solenoid which he changed to no improvement). Thoughts? 😊

Hi Jon

thanks for this

I shall feed this back to my husband - I know the initial feedback from rac when I broke down  was something to do with the solenoid. This has been remedied, the timing belt changed (not sure why as it was changed 5000 miles ago) - I’ll come back shortly but much appreciated that you’ve kept on this! 

So I asked my husband to give his take on your questions (very useful, thanks) as he has the job of dealing with the mechanic. 
 

The issue started when I was driving car after about 5 miles on motorway the engine started over revving and continued after I pulled over. 
 

1. The engine will idle when the car is stationary but when the car starts moving the engine revs high to about 2500rpm and stays there when the accelerator is not pressed.
2. The engine does not cycle up or down.
3. Blipping the throttle does not return the engine to idle.
4. Fault code P1349 has been showing but changing the vvt solenoid has not remedied the problem. 

hope this helps to try clarify 

Calling IS200 experts! 
 

2000 IS200 is dumbfounding mechanics with over revving issue.

timing belt changed 

vanos unit changed

throttle chamber cleaned out

vvti solenoid has been checked

Current mechanic (Toyota trained apparently……) has had car for 2 weeks now and has had a number of differing opinions as to why the car is not running well - losing the will to live and worried about his bill………

Any words of wisdom would be most gratefully received! 
 

Thanks 

On 5/7/2024 at 9:16 PM, Prince Bob said:

I had the same issue on mine years ago, a new 12V Battery, and all was good

Thanks for this Prince Bob! You may have an excellent take on this - just checked the 12v and although the flow is 11.55v there is a small amount of clear liquid sitting in the tray underneath the battery…….. ?acid? No litmus paper to test! When we had the warning light come on 10 months ago the pipe at the top of the Battery was disconnected- anything to do with the liquid which has appeared? 

A warning ⚠️ came up on my dash yesterday on my 15 year old RX450h.

check hybrid system 

Any ideas how to deal with this please? Car seems to be running fine 🤞🏼
 

Any wise words much appreciated - thanks 

Thanks Greisingel for the suggestion - it makes sense.  I shall have a look. Thanks again 

Thanks to Herbie and Dave 450h.  Both very informative and I’ve learned a bit more about my RX450h.  Interestingly the code has now disappeared after having a look at the 12v Battery my husband found a ‘breather’ pipe disconnected.  After reconnecting I started up and the code was gone!  The car drove beautifully back from Tuscany to England. Keeping everything crossed she behaves herself going forward…….

I really did appreciate the replies I received so thank you.

Thanks Spock66! Unfortunately I don’t have that widget thing that provides fault codes with me. Lesson to be learned when planning road trip! Running purely as petrol engine so no hybrid at all. May try disconnecting the 12V to try and reboot? 

2 hours ago, Spock66 said:

First step is you need access to the fault codes, only other thing to check is the 12v battery, anything else would just be a guess.

Just driven from uk to Italy and for first time ever a Check Hybrid warning light (in yellow not red) has come on. No apparent issues with the car - any suggestions? 

But have had an rac advisory which advised coolant pipe etc. hope this helps 

Gosh that’s really kind of you! Car is in Bristol and I’m 100 miles away. So no chance of photos as son in Middle of medical exams and focussed elsewhere which I completely get! The car is a uk x reg - I think it’s purely an IS200 no add one. 

My student son has been using our 23 year old IS200 and the old girl has had a few ageing issues.  Most recent issue is a leak from the coolant pipe at the rear of the engine.  Is this a difficult (aka very expensive) repair?  We all love the car and will be sad to see her go……. Other than when she’s not behaving she runs like a dream!  Has had a new radiator fitted within last 12 months.

Has anybody got experience of having this leak issue and any wise words much appreciated!  Thanks 

Could someone tell me what the minimum pad thickness is please for the front brakes of a 2010 RX450H? Thank you.

My RX450h occasionally makes a loud bang like someone has just hit the car when switching from hybrid to petrol - it only happens when the car is stationary.  Certainly makes me jump! Any ideas on what could be causing this phenomenon please? Car is into dealership for its 50000 service this week. 

Hissy Fit update!  Lexus had her back to deal with her oddities......... They replaced the radio!  How that will resolve the reverse camera not engaging or the windscreen wipers switching on and off randomly I really don't know! However, the faults have been reported under original warranty so hopefully she will be covered for any further issues........ I shall keep you posted.

Hey thanks all for your very good advice - as having dodgy moments with radio/windscreen wipers and reverse camera I forked out for the warranty if only so I can sleep at night!

Really appreciate your comments on this - what a great forum you people have! 

Hi Rayaans, bought the car from Lexus Milton Keynes as pre used last year. Hope it hasn't been messed with....... How would I know? 

Hi ChrisKaye.  Thanks for your suggestion! I still have the car and if the fault occurs before she goes back up to the dealership next Thursday I shall try and get someone to have a look.   Possibly easier to that than trust her not to run me over whilst I check out the lights........😳.  In any case, I shall draw that possibility to the Service Department's attention.  Last time they simply changed the camera unit but despite this the intermittent fault is still occurring, albeit rarely.  I wonder if the radio and windscreen wipers could also be down to faulty switches? I really appreciate your assistance. 

Thanks DanD. Dilemma! Mine is just at about 40,000 miles for a 2010 plate so a long way to go to Tom's 75k.  However, with the car going back to Lexus under warranty next week for reverse camera not engaging occasionally issues, windscreen wipers switching on randomly in sunny weather and a radio which likes to switch itself on and off repeatedly I rather feel there may be trouble ahead........!  So perhaps the peace of mind a £1000 warranty will bring may be worthwhile. Thanks for your sage advice.

Thanks Ricewind - I shall pass both links to my husband and let you know how he fares! 

Hi Rayaans! Thanks for advice - the mirrors usually tilt unless the reverse camera doesn't engage.  Hopefully Lexus will sort the problem so that everything engages as it should when reverse is selected........... I shall report back.

I am posting here on behalf of my husband who has an elderly IS200 which has a fair few miles on the clock!  The heating system has been playing up and warm air is only being blown out on the driver's side of the car.  Which means my feet as a passenger are getting pretty cold!!! He has performed a 'reverse flush' three times now and although it is a little warmer it has not completely resolved the issue.  Any suggestions of what to put into the matrix to flush it through?  I was thinking dishwasher cleaner...... Otherwise it's fully insulated boots and duvet coat for me for the rest of winter! Any suggestions would be greatly appreciated - thank you! 

Have you been driving your car through rivers😱 Seems to be a lot of leaking going on! Thanks for advice, I think I will bite the bullet and pay out for the extended warranty...... Although coming the same time as motor insurance renewal it is not ideal timing!! Thanks again.