LexusMike

Thanks Stav I will keep an eye on the eBay item you listed. Still not sure if it's the right part, although I would assume a brand new Cat would help with the emissions anyway!

Cheers.

Mike.

Theres two on Ebay incidently:

item 200302472570

and

item 200302474098

stav

Yikes now I'm confused/worried. Most here seem to think it's the main CAT but Toyota said they were sure it was the pre-cats! I dont want to end up with the wrong part, and as I am broke buying both parts doesnt make much sense.

Is there an easy way to tell which part is kaput?

Cheers.

Mike.

PS I would assume buying both parts on the off chance would also double my delivery costs too. Not sure what they will be.

The Car is a 1999 T Reg has about 118,000 miles on it. IS200 Sport.

It was Toyota that told me that it only just passed by 0.1 that was in June last year at it's MOT. They said it was the pre-cats that needed replacing. I have taken it to a local mechanic today he has tested it and said that it doesnt pass any longer. He agreed that it was probably the pre-cats telling me that they normally go first.

I have no idea, not really knowing anything about cars. But I cant afford to spend dosh on a part, delivery and fitting if it isnt the problem. Is there a way to be sure thats easy to check? Not sure my mechanic will be trying lots of different possibilities without charging me for his time obviously.

Mike.

Another thing to bear in mind is the o2 sensors I think - a faulty one of those can cause it to fail emissions tests I think?

Something to bear in mind if the cat doesn't sort it - what sort of milage / age is the car?

OK if you can wait the WHOLE front part of my exhaust system will be coming of my car in 2 weeks so this will give you the manifold and main CATS. I have no idea as to how much they are worth, someone on here may well have a good idea though!!

The emisions were fine when it was last MOT'd.

I did speak to someone that had just sold one for £40, just my luck to have missed it!

Mike.

Hi All,

My car only just passed it's emmisions test at it's last MOT in June. I have had it tested again today with a local mechanic to double check what Toyota said was correct, and now its even worse, now it would fail. :( From what I understand the pre-cats are in/part of the 'Manifold' I am not 100% on this as my knowledge on cars is zero really.

I am skint so need to look for a second hand part. Any ideas on a good place to find one for a reasonable price? I dont really want to go down the breakers yard route, but it might be my only option.

So if anyone on here knows a good place to get hold of a second hand Manifold please let me know.

Cheers.

Mike.

Thanks guys, if anyone else has the Manifold with pre cats part please PM me.

Cheers.

Mike.

I checked the test result it was done back in June at 12:55pm for my MOT.

Results:

FAST IDLE TEST

FAIL

ITEM ------ ACTUAL---------LIMIT

RPM PASS----2740------- 2500-3000

CO FAIL---0.67%----- 0.30 MAX

HC PASS-----101ppm---- 200 MAX

Lambda ------1.02-------- 0.97-1.03 ONLY JUST PASSED!

PASS

----------------

SECOND FAST IDLE TEST

PASS

ITEM ---------ACTUAL ------LIMIT

RPM PASS----2760------ 2500-3000

CO PASS-----0.10% ---- 0.30 MAX

HC PASS-----40ppm ---- 200 MAX

Lambda 1.01 --- 0.97-1.03 ONLY JUST PASSED!

PASS

----------------

NATURAL IDLE TEST

PASS

ITEM ------ ACTUAL----- LIMIT

RPM PASS --620 ---- 450-1500

CO PASS --0.06%--- 0.50 MAX

OVERALL RESULT EXHAUST EMISSION REST: PASSED

----------------

None of these test results mean much to me as I don't know stuff about cars. Although it does seem judging by the first two results it only just scraped through! Hence why they are telling me I need a new CAT, which I since found out is called the 'Manifold'. grrrr

Mike

Sounds like it's worth getting the emissions test done again, this time with the car well warmed-up beforehand.

Aww am I the only oned that's named mine then?

how much is a session please? lol

Mike.

LMAO!

OMG I really should read things more closely!

I thought it was a bit of a shame to fall out with a car if you'd gone to the trouble of naming her! HAHAHA!

Car counseling sessions are still available on request tho! :)

I may have read this wrong, but I dont think he meant his car is called 'Janet', I think he was talking to Janet RE her previous post. ;)

My cars called Lexie, not very original I know, but she often flashes her skid light at me, that might be just to tell me to behave as I can be a bit naughty in her sometimes. What does everyone else name their car? lol

Car counseling with Bonita sounds useful, mines busted!

Mike.

Don't loose faith in Janet. - I wonder if you know how many times she's looked after you already?

My little skid light pops on now and then just too remind me my car is looking out for me :)

p.s if anyone else needs car counseling just write to me at Dear Bonita...

Hehehe

B x

Hi All,

Interesting thread. I have been using 'Snow Mode' for about a year now on my 99 IS200 Sport after reading on here that it made a difference to fuel consumption. My car is manual and I run it down to very low in the tank normally. When I fill up I am generally putting in 65 litres and I used to always get between 315 and 330 miles on a tank. The car is rarely used on motorways and is usually used mainly for short trips, probably in total only 26 miles a day, school run mainly, so back and forth a bit but not many miles each time.

Since using the snow mode I now achieve around 380 - 400 miles per 65 litres in the tank, which certainly adds up in price savings over the year. If I am on the motorway for a longinsh trip, say around 450 miles round trip which I do a couple of times a year I have fuel still left in the tank. So I think snow mode makes quite a difference on consumption. Just hope it's ok to run my car all the time using it! :)

Let's face it, using snow mode in actual snow doesnt really do much to stop lexie from sliding all over the place!! I think it just sends a message to Lexus Head Office to say.... hahaha someones trying to use one of our cars in the snow again, fools! So it might not be great for it's original purpose but it's handy for saving a few quid.

Mike.

Yikes I will be really woried if the other CAT is going too!

Mike.

I'm suprised that it could fail the emissions test because of a problem with the pre-cats (in the manifold), because some LOC members have deliberately removed those pre-cats, keeping the main cat, and passed the MoT still.

If you have a look at the link in my earlier response, the diagram shows the exhaust manifold towards the top left. This is basically the start of the exhaust system, there's a pipe leading from each cylinder (6 on the IS200), and each of the "banks" of cylinders (two banks of cylinders with three cylinders each) feed into their own pre-cat (i.e. small catalytic converted). This is all the assembly labelled "Exhaust Mainfold (with TWC)" in that diagram.

The manifold then connects onto the main cat, which is shown at the bottom right of that diagram. This is a much bigger cat, which I would presume does the main work in cleaning up the emissions.

Assuming all the diagnosis is correct, then I wonder if the main cat is pretty marginal too ?

Anyone know more about this ?

But if it nearly failed emmisions because it needs a new cat surely removing it will make it worse?

Is what you have the part that I am after? If so how much would you want for it including post, and what condition is it in please? PM me if your interested in selling it.

Cheers.

Mike.

Some people on here actually remove the precats on their manifolds to increase performance. Might be worth doing that and won't cost anywhere near as much to pay someone to cut it - removed the precats and then weld it closed again. I alos have a full cat back OEM exhaust sitting in my shed but would want to sell it as a whole and am quite far away.

Hi Stevie,

Sadly as I said my tech knowledge is zero on this, so I am already quite confused to start with! lol

According to Toyota there are two parts for the CAT, both amazingly and very weirdly are the same price £654.90 each + VAT & fitting, but they are seperate parts. The part that I need they are calling the 'Manifold' which has the CAT inside it they told me. They are sure that I need it because at it's MOT it only just passed the emmisions test by 0.1 and it's making a noise which is the honeycomb part in the CAT rattling about as it breaks up.

They have told me:

Front CAT converters are both broken up.

MANIFOLD ASSY PART x1 = £654.90 + VAT

GASKET EXHAUST PART x2 8.88 = £17.76 + VAT

Remove and renew exhaust manifold assy = £41.30

The price is horendous for a car which being a 1999 T reg is probably only worth a couple of thousand pounds now.

Thankfully it seems 'Ellz' on here may have the silencer/backbox I need so that will save me on that bit, but this CAT/Manifold business is a nightmare!

Mike.

Hmm, ok, so it's the pre-cats that have gone, rather than the main cat. Is the £655 plus VAT you were quoted for a new manifold (including pre-cats) ?

Is it just me or does this sound a bit weird ? Could it be a sensor that's really faulty ?

There's a diagram of the various components here

Just to clarify for anyone reading this I have been told by Toyota that the CAT comes in two parts, and is not the part I first thought! The bit I need is known as the 'Manifold' which apparently has the CAT inside it.

Cant find anyone that makes one of these other than the standard lexus part, so anyone with any information or advice please feel free to let me know.

Cheers.

Mike.

Thanks guys, I have messaged Ellz and will wait to hear back from him while I continue my search. :)

Ellz still seems to have a back box for sale, plus a cat too. Check out this thread and send him a PM.

Hi Stevie,

I havent tried a breakers as I thought I might just end up with an old part that will need replacing again soon. I did use a company called 247spares before when I needed a part for replacing the windscreen wiper mechanism. Cost me about half the full price and came from a breakers yard.

I will give the idea some thought, but I think would still prefer to get a new part from someone. Hopefully some people here will point me in the right direction. Why do these things always happen when your broke? lol

Mike.

Have you tried a breaker's ? I would have thought that you could pick up a back box from there for not very much at all.

Hi All,

I would really appreciate some advice on finding a replacement part for my Lexus IS200 Sport. The 'rear exhaust silencer' needs to be replaced, and as my car is a 1999T reg I am not sure there is a great deal of point in forking out for one from Lexus as I would assume it will cost me a lot more. Toyota have quoted me £300 incl VAT for the part. Does anyone know of any companies that sell the same/similar part for less, and that wont increase my insurance? I'm guessing it only increases insurance if its counted as a modification?

On a seperate note I have also been told at my last MOT that my CAT will need replacing before it's next MOT as it only passed emmisions by 0.1 :( My local Toyota garage have quoted me £655 + VAT + fitting for a new one! I have found a company that will supply me one for £300 so I will probably use them does that sound a reasonable price for a new CAT? Sadly and much to my surprise that company dont sell the part I also now need for my exhaust or I would buy that from them too.

Any advice/help finding a cheaper replacement than Toyota/Lexus would be gratefully appreciated especially as I am already skint! I am not after anything flash or that will improve performance etc, just the replacement part.

P.S I have no technical knowledge, I will be getting a local mechanic to fit the parts for me, he has already tried two companies he uses for aftermarket parts, he got the me the price for the new CAT which I havent ordered yet, but his suppliers dont do the silencer.