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A few months back i notice one of the rear exhaust mounts for the back of my is250 were rusting.

I bought a new one for each side for along with a new gasket+springbolts for mid exhaust pipe - Whatever Lexus parts said i needed for the job. I then took it to the garage my dad has had his cars serviced at for years and asked him to replace them for me. +image below, above ONG647 is where the exhaust was taken off so the new hangers could be bolted on.

Few months down the line and can hear an exhaust leak, I look under the car and can see a lot of heat coming out of the exhaust right next to fuel lines that now have no heatshield. It's as if he hadn't tightened it properly at all, the amount of air coming out is enough to move light dirt underneath the leak.

Is this the mechanics fault for not tightening properly, being next to fuel lines too with no heatshield must be unsafe? As a mechanic its his job to ensure the car he's working on leave his shop safe for a customer to drive.

I'm not looking to go after the mechanic, he just won't have my custom again. It's more the fact my dad swears by him and has done for years because it's easy for him.

33 minutes ago, Farqui said:

The apparent gap at the front on the plenium could be part of moulding...is there a draft or any hissing noises when the engine is running?

The hose  looks like it should fit to the left of large coolant hose - check the image within post#2 of this thread; https://www.clublexus.com/forums/is-2nd-gen-2006-2013/363144-engine-air-filter-diy.html  Might the hose connector have broken off?

The pic isn’t the greatest. There are two hoses from the cap one left into there and the other is off to the right on its own. I think its just for ventilation as the other hose is connected to a larger hose under the cap which goes down into resevoir.

only weird noise I hear is when turning the car off you hear a lot of pressured air being released. sounds like a blow off valve

On 6/22/2019 at 11:40 AM, Alfalfa said:

Do someone know if this unit wil work on Lexus is 250.  2006. What is EMV?

  

You can buy the genuine dab antenna and install it. The only difference is your button wont say fm/dab inside the car but you will get the stations (unless you can be bothered to replace that too. Not sure how much it will cost but main dealer offer  service

Hi, i noticed this gap at the front of the intake manifold is this normal?

also this hose is coming out of coolant reservoir. I’m not 100% if it is the hoses fault but it seems like something has been spraying over the fan below it. - looks similar to limescale.

any ideas?

before spending 2k have mounts checked as i had flywheel/clutch changed and it did nothing to stop juddering or grinding noises.

lexus dealer was 1.6k and indepedant garage quoted 1.4k for the work

Now, if you’re planning on going through with it buy a 3rd party warrantee. I saved myself the labor and flywheel cost just had to pay for clutch as its consumable.

think I used wms group. The way in which the flywheels fault isn't visible from the outside and mine had a few heat spots (something like that cant remember what tech said exactly.) so when an independent inspector arranged by the warranty company goes to dealer to check the fly it looks as if it is a manufacturer fault instead of wear and tear. 

I’m not sure if I am lucky as i only had 70k miles so they might not cover with that high milage. 

On 7/8/2019 at 9:13 AM, Kaminet said:

I've done some reading for you, and I doubt your issue is a bad caliper.  If the engine isn't throwing a specific code you're one of the "luckiest" chaps to get excessive carbon buildup on intake valves. Save your time, and money, and do it right the first time... On Ebay there's a "chap" who is specializing in cleaning direct injected engines. And I've messaged him, with a price request for is250, he came back with £400 and done within a day for walnut blasting. Which is the only right way of cleaning the valves in the long run. After, or before that, you may consider installing an oil catch can, fairly simple procedure, to minimize such occurrences. My two cents in this is, on your next few refills use some injector cleaners, I do it in combination with octane booster and cat detergent, it's a bit expensive considering the price of petrol, and then  adding another 25~30 quid into the tank, but it is means to an end... And although this does nothing to prevent or remedy the buildup, it keeps the rest of the system clean, and helps with mpg. Don't have to do it all the time... Refill to full once and pour a "two shot bottle" of RedEx (don't worry will do no harm), skip next one, do it again on the third full tank, and that should do for a while. But definitely have your valves inspected/cleaned.

Would seafoam intake spray work for valve cleaning?  Do you know where "eBay chap" is located?

Definitely getting a catch can, I was looking for one about 10k miles ago and ended up not pulling through... I wonder how much of a difference it would have made.

43 minutes ago, Linas.P said:

Seems a bit low for me... I used to get ~28MPG in London and ~44MPG on motorway if not going over 90. However, for last couple of months I am having issues with MPG as well as it has dropped to ~37MPG on motorway and barely 22MPG in town. Still cannot get to the bottom of it, but suspected are "lazy" oxygen sensors or MAF. In short - if you getting anything below 25MPG look for issues.

Is your also manual?

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Every cold start now sounds, well, rattly. Car had full service history but never had this tsib EG017-07 done even though there are customer complaints for cold start rattle from 3 years after the car was purchased on the my lexus site...  Wonder if the cam problem could cause this?

I don't exactly baby the car around but i have had slide pin problems with brakes before so i’ll have a look. 

Also, its a manual. 

never thought to reset avg so ill do that today. 

I've been looking around and people are averaging getting averages in town of over 28mpg.

Ever since I've owned mine i've been 17-23mpg and sometimes 25+ on the motoroway let alone town.

How do you compare? anyone have an idea why mine is low?

I'm satisfied with the power and insurance is the issue for price, i could get a 12k isf but i will be backing 7k+ for insurance... The idea for this car is to have it lower for looks but not ruin the drive. It will by my reliable daily while i have another car on the side which i will build for power. I'll do roll bars before i touch suspension.

I was asking in the orignal question; those that have tackled suspension what works best for them.

The car is affordable for the power and you can't get the is350 in the uk.

As for the sensors i've just had one replaced so is it an issue that i have them.

MY is250 definitely could do with tightening up.

Looking for some either adjustable coilovers or springs, those that have tackled suspension what works best for an is250 that gets a pretty hard drive?

Only want a little lower, enough to clear speedbumps but enough to stop me bouncing down the road...

ideas?

I had seized slide pins and lexus wanted £300 per caliper, two of them. Took it to local garage for mot and they freed them and said it wasn't bad. Might be worth taking them somewhere and getting them looked at or having a go yourself.

On 4/2/2019 at 11:20 AM, Texas said:

Sorry but No, no sense what so ever. It would be almost impossible to fit the master cylinder mis-aligned and how did the Master Cylinder come into the equation anyway?

paul m.

Meant to put slave cylinder

Ok thanks

Here are some photos

Had exhaust clamps changed and I still get the grinding noise, had a mechanic not from lexus hear it and I think he thought it sounded like the master cylinder wasn't fitted straight if that makes sense to anyone.

Pretty sure it was around £1500 to have clutch and flywheel but i had more done at the time.

Hi, I saw a video where someone was replacing their pcv valve in their is350, I was wondering if this hose you can see coming out of the plastic under the engine cover is meant to be on an is250. Mine doesn't have a hose its just blocked off.

Had one of lexus's technicians in the car. The rattling noise is suspected to be heatshield clamps and of course the grinding noise didn't happen once when he was in the car. Leaving it with them overnight so they can hear the cold start rattle and hopefully it makes the noise too.

He did say the cold start rattle is normal and isn't doing any damage.

When it comes to the engine, there is definitely ticking going on which i've had mixed opinions about, 1 tech said it was normal injector noise and the other thought carbon buildup. I cleaned out the air box and it had a few leaves in it, since then i haven't heard the noise throught the vents.

I've checked the invoice from my repairs, bal bearing and rel bearing are both on there so must have been done. Can confirm you can hear the noise in 2nd. Just had new mounts and gaskets for exhaust work and everything else exhaust wise was OK.

Hi, I have an 06 is250 with 80k miles on the clock. Since i've owned the car (from 70k) there has been a horrible grinding/rattling noise at idle in neutral that goes away when you press the clutch pedal.


Took the car to lexus and had them diagnose it. I had a flywheel/clutch fitted, Wasn't cheap and thought my problems would be done with. The noise is still there and now i also get a metal on metal rubbing/grinding noise when I pull off. This only happens in first gear or reverse and is starts as you bring your clutch into the biting point. It's intermitant but still horrible and very loud.

Another thing that has gradually got worse since owning the car is a weird rattling noise. I've ran into the cold start rattle and it is very similar. You can hear it as you rev and you can hear a weird rattling sound through the air vents at around 5k -6k revs. Again these are all intermitant and sometimes it drives great and i might actually hit 20mpg

Hopefully someone here could shed some light on these problems as i've tried searching but i can't find answers.