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Hi Guys , whilsts I have adapted my driving to deal with the lag in my IS220D`s turbo kicking in , it seems now to have stopped kicking in al together :-/ , I now have a complete lack of power all the way through the revs and gears :-(   the only way the reach 30mph is to high rev ( 3500rpm) in both first and second gear ...... not good !! I`ve cleaned the MAF sensor with electrical contact spray , and also had the EGR valve out to claen out all the carbon deposits , of which there was plenty, all though to no avail , could it be the turbo that has failed , any advice will be greatly appreciated :-)

Jc 

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Turbochargers rarely fail without warning there is usually some noises if the bearings are about to fail accompanied by increased oil consumption.

Not sure which type of turbo is fitted to the 220d but if it is a variable vane type the actuator can seize preventing a quick spool up or check the pipe work and intercooler for leaks or damage and all the pipe clips are tight, usual sucking noises can be an indication here.

There is also a boost pressure sensor which does fail on other makes.

It may be an idea to find a local turbo specialist who would be able to provide an accurate diagnosis and would probably prove cheaper than a Lexus dealer.

Finally welcome to the LOC.

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16 minutes ago, steve2006 said:

Turbochargers rarely fail without warning there is usually some noises if the bearings are about to fail accompanied by increased oil consumption.

Not sure which type of turbo is fitted to the 220d but if it is a variable vane type the actuator can seize preventing a quick spool up or check the pipe work and intercooler for leaks or damage and all the pipe clips are tight, usual sucking noises can be an indication here.

There is also a boost pressure sensor which does fail on other makes.

It may be an idea to find a local turbo specialist who would be able to provide an accurate diagnosis and would probably prove cheaper than a Lexus dealer.

Finally welcome to the LOC.

thanks for that Steve ,there was no warning at all, left home as normal, all was fine untill i went to pull away from a junction and nothing , no power at all,  ive had a good look at all the pipework and all seems well, i also took off the pipe leading into the turbo revealing some fins which i coud turn freely, not sure if this is the actual turbo fan or not :-/ 

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Welcome John.

As Steve has mentioned, it is rare for a turbo to spontaneous fail.

If you put your hand into the front of the turbo and spun something cone shaped with fins on then that is the compressor, which seems to be fine.

No warning lights on the dash? No smoke out the back?

Does to car pick up any power over 2000rpm at all?

Another thing to check would be the waste gate on the back of the turbo to see if it is stuck open.  Unfortunately, that is not as simple as checking the compressor.

The ideal test would be to temporarily plumb in a boost gauge.  I can't remember if the TechStream software's live data feed shows boost pressure.

Also, although it should throw up an error, have the checked the throttle body to see if the flap is opening all the way?  It is probably fine, but it is easy enough to investigate to make sure.

 

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I'd just like to point out that this is the IS200 / IS300 section.  There is another section for IS220D

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7 hours ago, Shahpor said:

Welcome John.

As Steve has mentioned, it is rare for a turbo to spontaneous fail.

If you put your hand into the front of the turbo and spun something cone shaped with fins on then that is the compressor, which seems to be fine.

No warning lights on the dash? No smoke out the back?

Does to car pick up any power over 2000rpm at all?

Another thing to check would be the waste gate on the back of the turbo to see if it is stuck open.  Unfortunately, that is not as simple as checking the compressor.

The ideal test would be to temporarily plumb in a boost gauge.  I can't remember if the TechStream software's live data feed shows boost pressure.

Also, although it should throw up an error, have the checked the throttle body to see if the flap is opening all the way?  It is probably fine, but it is easy enough to investigate to make sure.

 

Hi Shahpor, no warning lights , no smoke, no pick up of any kind at all , it reminds me of driving my old Fiat 123 when i was a lad :-)  other than having vastly reduced power its perfect , it wouldnt be in limp mode for some reason would it ?

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I think you'll find your turbo wastegate is stuck. I had the the same problem with my is220d. 

I'm sorry to have to say this but the lexus is220d is a total ball ache.  It was one problem after another during my short ownership.  Best thing I ever did was trade it in.  

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1 hour ago, Jcc58 said:

Hi Shahpor, no warning lights , no smoke, no pick up of any kind at all , it reminds me of driving my old Fiat 123 when i was a lad :-)  other than having vastly reduced power its perfect , it wouldnt be in limp mode for some reason would it ?

If it was in limp home mode, you would know it :smile: The dash would light up with the engine management light and it would say 'Check VSC' on the information display.

Although, what you describe sounds very similar to what limp home mode is like.

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59 minutes ago, peachy said:

I think you'll find your turbo wastegate is stuck. I had the the same problem with my is220d. 

I'm sorry to have to say this but the lexus is220d is a total ball ache.  It was one problem after another during my short ownership.  Best thing I ever did was trade it in.  

Shaun, I don't mean to be rude, but I really wish you didn't feel the need to bash the 220d so often.

I know you had some very bad luck with yours, and I sympathize, but the 220d is not a total ball ache for everyone.

It would be nice if you didn't scare away the new diesel members before they have had a chance to feel welcome. :smile: 

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11 hours ago, peachy said:

I think you'll find your turbo wastegate is stuck. I had the the same problem with my is220d. 

I'm sorry to have to say this but the lexus is220d is a total ball ache.  It was one problem after another during my short ownership.  Best thing I ever did was trade it in.  

maybe i`ve been lucky so far :-)  owned it for over 4 years now and this is the first i`ve had any problem , its probably the second best car i`ve ever owned :-))))

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Second best?!?!? :jawdrop:  What could possibly be better? :tongue:

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Ford Cortina Crusader Mark v !!!!       I will say no more :-)

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26 minutes ago, Jcc58 said:

Ford Cortina Crusader Mark v !!!!       I will say no more :-)

You are easily pleased!

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When my Mercedes diesel lost turbo boost it had no warning lights initially. That was an air mass meter sensor failure. 

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On 7/3/2017 at 2:52 PM, Shahpor said:

Second best?!?!? :jawdrop:  What could possibly be better? :tongue:

Just a quick update , it was indeed the wastegate thingy that was stuck £ 178 later and all is well :-)

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