your channel and your video is something impact my life directly, extremly value, something I been want to do and do since I start work on car myself since I in high school until now Love it!
Thanks so much, its never too late to stop. As you know I was a licenced mechanic and worked on many cars for a living, every day I worked on so many cars. From rebuilding engines to electrical problem, and air conditioning. Now I do for a hobby and like to help others by sharing my knowledge. Thank you :)
1 Like first comment hear about this but have never replace them before very expensive when we do great video, have a great weekend. thanks for your up load always learn something new every day.
Ya that happens here too, they are worth quite a bit. I think the only thing is to get a car alarm or get a car that does not have them (electric car) LOL :)
Hello, I’m having the double start problem and then low acceleration after changing the exhaust of my Lexus is250. Could it be a bad O2 sensor? It give high rpm but not acceleration
Put your hand behind the tailpipe and have someone rev up the engine and feel how much airflow is coming out. Compare that to a good similar can (v6 engine) You may have a plugged catalytic convertor which can cause excessive back pressure. It can cause the transmission to downshift resulting in higher RPM's with no acceleration due to the restricted exhaust. You have catalytic convertors in front of the exhaust you replaced. The exhaust you replaced also has catalytic convertors but those one should be good as they are new. A bad O2 sensor can cause a number of symptoms and if you have a scanner with live data you can see the readings as you drive to eliminate those.
Nice vid, how did you know that it wasn't the upstream cats that were the problem? I have a P0430 bank 2 code on my is350 and not a lot of money to second guess.
Hey there and thanks for the comment. No second guessing for me, I knew it was the downstream cats.I also had the P0420 and P0430 so each side, and because the leak was right in front of the O2 sensor, the sensor was not getting hot enough to read properly. The only way to fix that leak was to replace the downstream cats as it comes as one unit. I would check to see if you have a leak in your exhaust system, if you DO NOT then it may be your upstream cats, as there is no way to measure the downstream cats (i.e. there is no O2 sensor after the downstream cat) so there is no way to tell if its bad (unless its plugged)
Probably the bank cat. Mine started to go around 190k on my 350. Dealer just said you could wait, as it's just an efficiency loss. There's another video of a guy just doing his cat on an IS too. You can get a used one for around 300👍🏼
Hi there, my 09 250 isn’t showing any 02 sensor codes but under heavy load, say I’m powering up a hill, the rotten egg smell is getting bad, I did put a cat converter treatment (rislone) in the tank to hopefully clean the cats, but to no avail. Did you have this problem too? Did you find the secondary cats to be the issue with regards to the smell? - I’m psyching up to replace the primary cat converters, as I’m thinking they might be my problem, but thought I’d ask your experiences first, as you’ve replaced your secondary cats, did the smell go away? do you think just replacing the flange gaskets might also help? I can’t hear any exhaust leaks in the system at all you see… I hope you don’t mind me asking your thoughts on this.
Hey There and no problem at all with asking. I didn't have any rotten egg smell so I'm thinking the smell you have might be related to the primary cats and not the secondary cats. On mine the primary cats were fully warmed up, and the secondary cats would not warm up (because of the exhaust leak) and there was no smell. Normally that rotten egg smell is caused by an excess of hydrogen sulfide. Simply put the car runs too rich, and unburnt fuel is getting by. This is common on a lot of cars when you gun it, because most cars are factory tuned to run rich at wide open throttle. You could have someone check your engine live data to make sure your fuel pressure/fuel trims are ok. These may not throw a code if they are not out of whack for long enough. Most mid range scanners will let you know the range each should be in. Your problem could be your cat is on the way out and can't process the excess fuel under load, or you engine is out of tune, or both. My guess would be the cat is nearing the end of their life. Lastly, keep in most vehicles will stink under load so yours may be normal depending on how hard you are pushing it.
Hey there and thanks for the comment. If you just twist them in they could be ok, but it's not good practice as they will be under tension, the insulation on the wires will be tight, as they are twisted together, and the wires will be pulling at the top of the sensor, and the hot exhaust can't be good for those tight wires. I would think that over time there is a higher probability that you may get a short in the wire, or if you have to change it again the wire or insulation has a greater chance of breaking. I guess to answer you honestly its not good practice to do that, but if it's the 1st time it may be ok. But if its done again the chances of something breaking is higher as the wires are getting stretched with all that twisting. Hope I helped out and didn't make you more confused LOL :)
Hey There, I bought mine at Costco, they had them on sale. I did a quick vid of it. Man this thing is handy and I would not go without it now !!!! ruclips.net/video/0JsUoW2aXOA/видео.html
It was right at the beginning of the video, 18 second mark where I show the scanner and the codes. There were a few P0420 and P0430 were the main codes for the oxygen sensor.
Ya they get all rusted up. It really helps if you soak them with penetrating fluid. Spray the night before (maybe twice, once per hour) and then let sit overnight. Also if you have a torch, even like one of those butane torches a little heat can help free everything up. Lastly if you have an impact (even a battery powered one) the jarring motion can free the bolts.
Hey there, the misfire code went away, but to be honest I'm not sure if that was because of the cats (I kinda doubt it) but it was probably more likely because I replaced the spark plugs. Check engine light has not come on since.
Hi There, on the IS250, Bank 2 is the drivers side, and you have two (2) bank 2 convertors. One is near the engine, and the other is downstream. In this video I replaced bank 1 and bank 2 downstream catalytic convertors. Bank 1 and bank 2 upstream convertors are closer to the engine. Hope you are having a good weekend :)
Hey There, most of the $$$ is in the part, the labour should not be too much. Labour could probably be 100-250, and then there would be the cost of the part. I checked the parts store, and found the part cheapest on Amazon. Link is in the description for the part as the price changes so the link will have the latest price.
Hey Thanks for the comment, the front bolts are not Lexus specific, they are just standard bolts. I put the biggest ones that would fit into the hole. If I remember correctly they were metric 10mm. I can't remember if they were M10X1.5 or M10X1.25. Not that that will really matter for exhaust bolts.
Hey There, I think it would just be like you say, some support bar. I don't think it has an official name like a stabilizer bar. I would call it a support bar for the unibody.
@@GarageKing do you think it’s needed? It seems like my exhaust hangers are sagging, causing it to touch the bar. I checked all my bolts. Thinking about removing it temporarily until I get new hangers. Also, could be my aftermarket headers are heavy, causing it to drag.
@@Hitmanjat To be honest you can probably take it off, the only thing is your car may get a bit of a wiggle when you drive over train tracks etc. like a convertible. The only thing is if you take it out, I would put the bolts back in with anti-seize, this way the threaded holes wont rust up and you can put the bar back on at a later date.
Because it was rusted right out, the car sounded like it was an airplane. I used exhaust tape which did last about 2 years, check it out here ruclips.net/video/zG8ax1uEEeE/видео.html Finally it was time, it was going to fall off.
You don't have to, but there is the possibility that if you don't use it, you may have a leak. I have done it a few times without the goop, sometimes you get a small leak and sometimes its ok. It depends how rusty the flange is. With the goop I have never had a leak. You don't have to use much.
@@showrunner2183 Hey there, no where near 6 hours. I think it took about 4 and that was because I was filming it. If was was just working regularly, maybe 2 hours. I think the reason I was able to get it done so fast was the O2 sensor trick I pulled off. I wasn't sure if it was going to work, but it did. So I didn't have to disconnect the O2 sensors (the connectors are inside the car) so that's what saved me a bunch of time. You don't have to cut like I did, just get a deep o2 socket like this one amzn.to/3Uq1h2V. I actually had one, but forgot I had it LOL :)
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love how you highlighted some of the things that you did with the vid bubble
You know it !!! That bubble is worth its weight in gold, I use it on many vids, and it really helps !!
Will be doing same replacement on son's 2011 Lexus is250 awd. Excellent video
Thank you for the comment, and its a relatively easy job.
your channel and your video is something impact my life directly, extremly value, something I been want to do and do since I start work on car myself since I in high school until now Love it!
Thanks so much, its never too late to stop. As you know I was a licenced mechanic and worked on many cars for a living, every day I worked on so many cars. From rebuilding engines to electrical problem, and air conditioning. Now I do for a hobby and like to help others by sharing my knowledge. Thank you :)
@@GarageKing This super good to know working on car is a big task mainly fear, with some guiding we all can learn
@@shahnawazvlog6266 For sure, and happy Sunday to you :)
Agreed👌🏽
That scissor hoist is awesome. Would make life heaps easier.
You bet it is and thanks for the comment. That thing will pretty much lift everything except for full size trucks, I absolutely love it !!!!
1 Like first comment hear about this but have never replace them before very expensive when we do great video, have a great weekend. thanks for your up load always learn something new every day.
Thanks so much !!! Your comments are always appreciated :)
What is the size of nut on o2 sensor please ? Great video thanks
Hey there, I believe its 22mm, a 7/8" will do as well !!
Aloha GK!🤙🏽
Thank you :)
Superb video :)5
Thank you !!!
Can you make a vid on how not to get your catalic converters stolen?
A lot of that in my neck of the woods
Ya that happens here too, they are worth quite a bit. I think the only thing is to get a car alarm or get a car that does not have them (electric car) LOL :)
Hello, I’m having the double start problem and then low acceleration after changing the exhaust of my Lexus is250. Could it be a bad O2 sensor? It give high rpm but not acceleration
Put your hand behind the tailpipe and have someone rev up the engine and feel how much airflow is coming out. Compare that to a good similar can (v6 engine) You may have a plugged catalytic convertor which can cause excessive back pressure. It can cause the transmission to downshift resulting in higher RPM's with no acceleration due to the restricted exhaust. You have catalytic convertors in front of the exhaust you replaced. The exhaust you replaced also has catalytic convertors but those one should be good as they are new. A bad O2 sensor can cause a number of symptoms and if you have a scanner with live data you can see the readings as you drive to eliminate those.
I have is250 2008 AWD does it have the same catalytic convertor?
I believe it should be the same. While I can’t confirm I dont see how they would be different.
Nice vid, how did you know that it wasn't the upstream cats that were the problem? I have a P0430 bank 2 code on my is350 and not a lot of money to second guess.
Hey there and thanks for the comment. No second guessing for me, I knew it was the downstream cats.I also had the P0420 and P0430 so each side, and because the leak was right in front of the O2 sensor, the sensor was not getting hot enough to read properly. The only way to fix that leak was to replace the downstream cats as it comes as one unit. I would check to see if you have a leak in your exhaust system, if you DO NOT then it may be your upstream cats, as there is no way to measure the downstream cats (i.e. there is no O2 sensor after the downstream cat) so there is no way to tell if its bad (unless its plugged)
Probably the bank cat. Mine started to go around 190k on my 350. Dealer just said you could wait, as it's just an efficiency loss. There's another video of a guy just doing his cat on an IS too. You can get a used one for around 300👍🏼
Great comment and thanks for sharing
did u find the problem? i got the same code on my is350
Hi there, my 09 250 isn’t showing any 02 sensor codes but under heavy load, say I’m powering up a hill, the rotten egg smell is getting bad, I did put a cat converter treatment (rislone) in the tank to hopefully clean the cats, but to no avail.
Did you have this problem too?
Did you find the secondary cats to be the issue with regards to the smell?
- I’m psyching up to replace the primary cat converters, as I’m thinking they might be my problem, but thought I’d ask your experiences first, as you’ve replaced your secondary cats, did the smell go away?
do you think just replacing the flange gaskets might also help?
I can’t hear any exhaust leaks in the system at all you see… I hope you don’t mind me asking your thoughts on this.
Hey There and no problem at all with asking. I didn't have any rotten egg smell so I'm thinking the smell you have might be related to the primary cats and not the secondary cats. On mine the primary cats were fully warmed up, and the secondary cats would not warm up (because of the exhaust leak) and there was no smell. Normally that rotten egg smell is caused by an excess of hydrogen sulfide. Simply put the car runs too rich, and unburnt fuel is getting by. This is common on a lot of cars when you gun it, because most cars are factory tuned to run rich at wide open throttle. You could have someone check your engine live data to make sure your fuel pressure/fuel trims are ok. These may not throw a code if they are not out of whack for long enough. Most mid range scanners will let you know the range each should be in. Your problem could be your cat is on the way out and can't process the excess fuel under load, or you engine is out of tune, or both. My guess would be the cat is nearing the end of their life. Lastly, keep in most vehicles will stink under load so yours may be normal depending on how hard you are pushing it.
At 5:46 is it bad if you put back the O2 sensor back but the wires are left twisted? What happens if you leave them twisted
Hey there and thanks for the comment. If you just twist them in they could be ok, but it's not good practice as they will be under tension, the insulation on the wires will be tight, as they are twisted together, and the wires will be pulling at the top of the sensor, and the hot exhaust can't be good for those tight wires. I would think that over time there is a higher probability that you may get a short in the wire, or if you have to change it again the wire or insulation has a greater chance of breaking. I guess to answer you honestly its not good practice to do that, but if it's the 1st time it may be ok. But if its done again the chances of something breaking is higher as the wires are getting stretched with all that twisting. Hope I helped out and didn't make you more confused LOL :)
Where can I get that jack?
Hey There, I bought mine at Costco, they had them on sale. I did a quick vid of it. Man this thing is handy and I would not go without it now !!!! ruclips.net/video/0JsUoW2aXOA/видео.html
How many catalytic converters does the is250 have, 2 or 4?
There are 4, there are two on the piece that I replaced in the video, and there are another two upstream (one on each side)
Yes 4
Which code was for the oxygen sensor?
I have a p0420 bank 1 code.
It was right at the beginning of the video, 18 second mark where I show the scanner and the codes. There were a few P0420 and P0430 were the main codes for the oxygen sensor.
Half a year ago I tried to remove the muffler but the bolts were stuck and wouldn't turn.
Ya they get all rusted up. It really helps if you soak them with penetrating fluid. Spray the night before (maybe twice, once per hour) and then let sit overnight. Also if you have a torch, even like one of those butane torches a little heat can help free everything up. Lastly if you have an impact (even a battery powered one) the jarring motion can free the bolts.
did your misfire code go away As-well or was that another repair?
Hey there, the misfire code went away, but to be honest I'm not sure if that was because of the cats (I kinda doubt it) but it was probably more likely because I replaced the spark plugs. Check engine light has not come on since.
I was trying to figure out how to replace bank 2 catalytic converter but it wasn’t shown in this video I don’t believe
Hi There, on the IS250, Bank 2 is the drivers side, and you have two (2) bank 2 convertors. One is near the engine, and the other is downstream. In this video I replaced bank 1 and bank 2 downstream catalytic convertors. Bank 1 and bank 2 upstream convertors are closer to the engine. Hope you are having a good weekend :)
How much money do you think it would cost if I would make it repair in a garage ?
Hey There, most of the $$$ is in the part, the labour should not be too much. Labour could probably be 100-250, and then there would be the cost of the part. I checked the parts store, and found the part cheapest on Amazon. Link is in the description for the part as the price changes so the link will have the latest price.
What size are the front bolts I can't find them anywhere?
Hey Thanks for the comment, the front bolts are not Lexus specific, they are just standard bolts. I put the biggest ones that would fit into the hole. If I remember correctly they were metric 10mm. I can't remember if they were M10X1.5 or M10X1.25. Not that that will really matter for exhaust bolts.
What brand of converter is setup did you get?
I used a walker, got it off Amazon
Here was the link amzn.to/3roLUvK but its gone up double since I bought it, maybe because the platinum used in it. Check at your parts store
What is the name of the support bar at 3:42? Trying to adjust something on my aftermarket exhaust and its rubbing against this.
Hey There, I think it would just be like you say, some support bar. I don't think it has an official name like a stabilizer bar. I would call it a support bar for the unibody.
@@GarageKing do you think it’s needed? It seems like my exhaust hangers are sagging, causing it to touch the bar. I checked all my bolts. Thinking about removing it temporarily until I get new hangers. Also, could be my aftermarket headers are heavy, causing it to drag.
@@Hitmanjat To be honest you can probably take it off, the only thing is your car may get a bit of a wiggle when you drive over train tracks etc. like a convertible. The only thing is if you take it out, I would put the bolts back in with anti-seize, this way the threaded holes wont rust up and you can put the bar back on at a later date.
@@GarageKing thanks yes exactly what I did. It seems my headers are weighing it down coupled with the rubber hangers. Thanks again !
@@Hitmanjat Anytime !!!
Do you ever get stinky egg smell on load?
Yup it happens to most cars, its because when you are accelerating hard the engine runs rich and that contributes to the smell. Totally normal.
Why did you change it?
Because it was rusted right out, the car sounded like it was an airplane. I used exhaust tape which did last about 2 years, check it out here ruclips.net/video/zG8ax1uEEeE/видео.html Finally it was time, it was going to fall off.
Are those 16 inch rims??
Yep you bet 205/55 R16 Thanks for the comment !!
@@GarageKing how does she ride on 16s ? I have some OEM 16s from a IS300 and I'm thinking about putting those on my is250
@@carlbrooks90 she rides great. Handling is really good as well. Sorry about late reply, just out camping :)
@@GarageKingthanks for the response, also what's the cold tire psi for that size?
@@carlbrooks90 I set them to 32psi
Do I have to put that exhaust goop?
Help I need to know if I need that exhaust goop?
No, but it helps seal everything up.
You don't have to, but there is the possibility that if you don't use it, you may have a leak. I have done it a few times without the goop, sometimes you get a small leak and sometimes its ok. It depends how rusty the flange is. With the goop I have never had a leak. You don't have to use much.
Yo that Is250 has 330K miles 😭
Its in kms not miles, but the old girl is up near 400kms now, so that would be about 250K miles !!
@@GarageKing love to see it man
@@thatscastro3996 I know, the car is a beast !!!
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Where do you live for the exhaust to look like that?
The great white north, that's Canada LOL :)
@@GarageKing awesome, I want to visit Canada
@@wendellgreenidge3362 Ha Ha, I'm not sure you know what you are asking for LOL :). Its a good country, but brrrrrr it gets cold in the winter !!!
@@GarageKing the cold doesn’t bother me, I live in Alaska
@@wendellgreenidge3362 OK, so we may be tropical to you then !!! I have always wanted to see Alaska, I really want to visit the Yukon as well.
Is the process the same for a LS460 2008?
Hey there, I would think they are similar, but not the same as the LS is a bigger vehicle, and has a bigger engine.
@@GarageKing how long did it take you. The book says 6 hours
@@showrunner2183 Hey there, no where near 6 hours. I think it took about 4 and that was because I was filming it. If was was just working regularly, maybe 2 hours. I think the reason I was able to get it done so fast was the O2 sensor trick I pulled off. I wasn't sure if it was going to work, but it did. So I didn't have to disconnect the O2 sensors (the connectors are inside the car) so that's what saved me a bunch of time. You don't have to cut like I did, just get a deep o2 socket like this one amzn.to/3Uq1h2V. I actually had one, but forgot I had it LOL :)
@@GarageKing thanks for these detailed responses
@@showrunner2183 Anytime !!!