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Catalytic converter options gs450h 2007

 
Old 02-18-19, 01:54 PM
  #16  
samsonn25
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Thats a thought, I brought it over to Meineke to do the 2 mid pipe sections for $250 instead of going for a used OEM midpipe or an aftrermarket stainless steel one.

Last resort is the dealer that can probably do in 1 hour book time but they want you to buy their factory o2 sensor for $250 LOL
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Old 02-18-19, 01:57 PM
  #17  
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Originally Posted by lynchy View Post
This may sound like a copout but, I'd recommend taking this to an exhaust shop. These guys remove O2 sensors all the time and seem to be able to reach places I never can. It was easier in my case as I replaced my exhaust manifolds with 2 the from the wreaking yard and they already had the sensors removed. New ones screwed right in.
How involved was exchanging the exhaust manifolds, besides reaching the header bolts on the extra flange, and the 2 rusted bolts on the front of the mid pipe?
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Old 02-18-19, 02:31 PM
  #18  
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For me 3 hrs each side. Had to get up from under the car and it is tight. Should save an hour each side of it is up on a.proper car hoist. Then U have the unknown (I had no trouble) like if U break a studs, nuts playing difficult to remove, etc. Exhaust shops do this all the time and are cheaper than the dealers. Source some Denso 02 sensors and have them fit the whole thing. Here in AU it (4 sensors) was gonna cost $1250aud for the set and then $2200 for the manifolds, Amazon cost $500aud for O2 and wreaker $500 for low KMs exhaust factory used manifolds including cats.
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Old 02-20-19, 03:38 AM
  #19  
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2-3 hours Thats alot of time! I was hoping to get away with $60-80 in Labor, and I have the replacement part.

We had it on a lift last week and tried to get it from the bottom up can barely see and reach it because space is so tight and my guy was afraid it might snap so they stopped. And also broke a u-joint in the process.

Its hard to get the right tool on it and the leverage with an extension because of the suspension in the way. Maybe the correct way is to take the exhaust manifold off, and the 2 bolts connecting to the mid pipe look rusty as hell and prob snap.

Imma try another shop tomorrow.

Last edited by samsonn25; 02-20-19 at 04:00 AM.
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Old 02-22-19, 03:44 AM
  #20  
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I got it done at meineke, and they charged me 1.5 hours at $100/hr shop rate for the labor,plus shop supplies and taxes about $171 out the door,
and they used my part that I bought online for $20.

NO MORE O2 cel

Now for the cat inefficiency code P0420

Last edited by samsonn25; 02-24-19 at 06:11 AM.
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Old 02-22-19, 02:11 PM
  #21  
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Great news! Great to hea​r. Enjoy your ride.
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Old 03-13-19, 04:24 PM
  #22  
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Im still getting the low efficiency cat code. Perhaps it is being fouled because of carbon and sulfur because I drive 95% of city driving and the cats dont get hot enough because it starts and stops all the time. I might try the Cataclean or Seafoam next month and see what happens.
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Old 03-20-19, 09:01 AM
  #23  
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Just a thought, since I'm getting both p0420/p0430s from time to time... but I have an exhaust leak that I have to handle first:

When looking for exhaust manifolds, many aftermarket ones (including magnaflow with a cat fitted) are marked as compatible with both the IS250, IS350 and GS350. The 450h just so happens to be using a GR engine as well, so...
Again, just a thought at this point. Still trying to locate if anybody has actually fitted a manifold from another RWD GR-equipped vehicle.

If they're compatible, then... way more parts to pick. I don't know if the cats are the same, though. The manifold gaskets are definitely the same - ******* parts reference confirms this.

Last edited by Lwerewolf; 03-20-19 at 09:04 AM.
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Old 03-25-19, 01:07 AM
  #24  
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Yes the gaskets are the same but I checked the part numbers and they are different. The cats may or may not be the same and the tubing might be different. Because there is more stuff in the way because of the hoses and such for the hybrid that the regular gas engine doesnt have in the way.

I'm in that dilemma now with 229k pronto the car is worn out. And I might look for a lower milega replacement. But I'm gonna change the downstream o2 sensor first just to make sure it's not giving a bad signal to trip the code.
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Old 03-25-19, 09:15 AM
  #25  
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Originally Posted by samsonn25 View Post
Yes the gaskets are the same but I checked the part numbers and they are different. The cats may or may not be the same and the tubing might be different. Because there is more stuff in the way because of the hoses and such for the hybrid that the regular gas engine doesnt have in the way.

I'm in that dilemma now with 229k pronto the car is worn out. And I might look for a lower milega replacement. But I'm gonna change the downstream o2 sensor first just to make sure it's not giving a bad signal to trip the code.
Part numbers don't match between the is250 and 350 either, even though aftermarket headers/manifolds seem to be compatible for both. Might have something to do with environmental regulations - might even be that the cats themselves are the same, just some regulatory BS preventing the parts from being the same. At any rate, something to keep in mind.
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