Lexus IS250 4GR-FSE Engine Carbon Build-up (merged threads)
07-16-10, 10:16 AM
#286
Hey, thanks for the imput. I actually am pretty fair with a wrench. My intentions are to replace it myself and I actually have a vendor account with Lexus so my cost on the sensor is discounted... STILL, the part price is high for an O2 sensor. Alternate sources are not substantially less expensive.
Also, the picture you posted shows the after cat sensor(s) and the one in question is the pre-cat sensor. I haven't sourced an IS repair manual so if you have those instructions please post.
Emission warranty seems to be same as basic at 50k. Federal major emission components (cats, ECU) but not o2 is 80k. 60k for a failed O2 is VERY low. Car still runs fine. Will get actual codes to determine if it is covered under TSB for carbon cleaning.
So, anyone have an O2 sensor fail?
Also, the picture you posted shows the after cat sensor(s) and the one in question is the pre-cat sensor. I haven't sourced an IS repair manual so if you have those instructions please post.
Emission warranty seems to be same as basic at 50k. Federal major emission components (cats, ECU) but not o2 is 80k. 60k for a failed O2 is VERY low. Car still runs fine. Will get actual codes to determine if it is covered under TSB for carbon cleaning.
So, anyone have an O2 sensor fail?
Torque specs is 30 ft lbs.
As to whether it should fail in 63k miles, it is not that normal but I'd say it could, it's before the cat and exposed to pretty high temperature. I doubt it is relating to the carbon build up though.
07-18-10, 07:00 AM
#287
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Te BG44 place I called said he didn't think I should have the induction service done unless it happens again. I will take it to him if it ever happens again.
07-18-10, 07:47 PM
#288
I called a place here in the Chicago suburbs. They quoted me $79 and told me it takes about 45 minutes. He asked me what problem I was having. I told him that it only happened one time - came to a top light, the car started to shudder, when I accelerated several warning lights came on and the car went into limp mode (max 30 or 40 mph). Dealer said there were no codes.
Te BG44 place I called said he didn't think I should have the induction service done unless it happens again. I will take it to him if it ever happens again.
Te BG44 place I called said he didn't think I should have the induction service done unless it happens again. I will take it to him if it ever happens again.
I'm not in a hurry to get this service. But I'm gonna look around which place can offer me a reasonable price and trustworthy.
07-19-10, 12:13 PM
#289
Make sure you ask what exactly is done for the price.
There used to be one BG service where it includes force feeding the fuel injectors to clean them, make sure that's not what you are getting (unlikely though).
The place I went to in CA here actually mostly service european cars, so they are familiar with audi etc. You can tell by talking to them if they are familiar with the process, if it sounds like they have not done it much then call the next shop. Maybe some shop believe in piston soaks with the cleaner.. ask them if you need to change your oil afterwards.
But anyway the original BG service is done like the video, car is running the whole time.
There used to be one BG service where it includes force feeding the fuel injectors to clean them, make sure that's not what you are getting (unlikely though).
The place I went to in CA here actually mostly service european cars, so they are familiar with audi etc. You can tell by talking to them if they are familiar with the process, if it sounds like they have not done it much then call the next shop. Maybe some shop believe in piston soaks with the cleaner.. ask them if you need to change your oil afterwards.
But anyway the original BG service is done like the video, car is running the whole time.
07-30-10, 08:31 AM
#290
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Read a post on my.is site of someone experiencing the same issue with a 250 and was told by dealer that another TSB on carbon issue may be coming out on this around next month.
07-30-10, 09:33 AM
#291
i had an induction service done first and then had the tsib done for the carbon a few weeks ago. it helped some, but i still think the vibration is too much for a car of this caliber. i also noticed the loaner they gave me each time was much smoother while idling. my car has not tried to die on me at stop lights since the service and that was my main concern. i am curious what this new tsib could say. any idea?
08-10-10, 09:51 AM
#295
i had an induction service done first and then had the tsib done for the carbon a few weeks ago. it helped some, but i still think the vibration is too much for a car of this caliber. i also noticed the loaner they gave me each time was much smoother while idling. my car has not tried to die on me at stop lights since the service and that was my main concern. i am curious what this new tsib could say. any idea?
What did the dealer do for you?
09-09-10, 11:42 AM
#297
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09-10-10, 04:31 PM
#298
There was apparently a production change during 2010 that addressed the carbon build up issue. I could not determine from the TSB attached in this thread what it was.
Can anyone tell me what changed to make it a non-issue in the newer IS250s?
Can anyone tell me what changed to make it a non-issue in the newer IS250s?
09-10-10, 06:02 PM
#300
The TSB 4 posts up (IS250gurl posted) shows the VIN #s and mentions a production change sometime in 2010. My VIN# is after the change but I can't seem to find info on what the change was.