SAIP - Service Campaign (JLG) '10-'13 / Update: No mileage or year restrictions
#391
Driver School Candidate
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I had this problem over the weekend on '12 gx 460 with 85k miles.
Found the parts myself online for $350. Took out the bad ones in 30 minutes. Then i came accross this thread.
Called Lexus Monday morning, they agreed it's an extended support item with coverage to 10yrs after vehicle purchase date or 150k miles. I sent the parts back and took it to the dealership.
My local Toyota service manager says he sees this problem every so often on any Toyota V8 from 07 forward.
I called Toyota to see if my 08 sequoia was also covered. Yes, it is, although they won't make any repairs proactively. The vehicle must exhibit the prescribed symptoms first. Then they have to verify it at a dealership.
Found the parts myself online for $350. Took out the bad ones in 30 minutes. Then i came accross this thread.
Called Lexus Monday morning, they agreed it's an extended support item with coverage to 10yrs after vehicle purchase date or 150k miles. I sent the parts back and took it to the dealership.
My local Toyota service manager says he sees this problem every so often on any Toyota V8 from 07 forward.
I called Toyota to see if my 08 sequoia was also covered. Yes, it is, although they won't make any repairs proactively. The vehicle must exhibit the prescribed symptoms first. Then they have to verify it at a dealership.
#392
Driver School Candidate
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Also curious: the Toyota dealership quoted me $1100 for the whole service with parts. I triple-checked that he was doing the whole job. That's far lower than the $3800 i've seen others pay in this thread. He said the placement of the components in the engine bay of the gx 460 just makes it all take less time to do. Perhaps parts prices have fallen too?
#393
Racer
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Sivert55, so are you having the GX fixed at Toyota dealer or at Lexus? I'm surprised at the difference in price. Wow!
#394
Super Moderator
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That is a huge difference in price between the Lexus and Toyota dealer. If mine goes bad I'll have it done at a Lexus dealer assuming it is still within the warranty period since that is more convenient.
#395
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So the filter is intact but yet there is gunk, gaskets failing? So happy to to just shut this poor system down with a lifetime warranty bypass. If the bypass fails I can go back to this system until I get a bypass replacement.
Did you notice any gaskets in place or missing when you removed this sirvert55? What else could this be?
#396
Super Moderator
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Yeah... look at those pieces that look like gasket material. I wonder where that came from? That got infused with some material along the way. That is a bizarre one if the foam is still intact.
#397
Super Moderator
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Almost like the gasket on the air valve face got sucked in when valve got stuck closed.
#398
Driver School Candidate
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Does anyone know what they used for the filter medium? My pumps and valves were replaced in 2015 at 55k miles. Just shy of 88k miles now. Pulled the pump cover and the filter was in perfect shape as was the fan. Curiosity got the best of me and I pulled the drivers side valve. Full of dirt. I cleaned it up and pulled the hose, which was also full of dirt. I'm guessing it's not the filter material that's failing but the filter is not doing a good job of keeping out fine particles. Passenger side valve was not as bad but the hose was dirty.
I bought an external breather style filter, but I think I prefer an oiled foam filter. I rubbed a little grease on the inside of the pump cover that should collect any dirt. I'll run it for a few weeks and see how it looks. If it's bad I'll switch to the uni filter and retest.
I bought an external breather style filter, but I think I prefer an oiled foam filter. I rubbed a little grease on the inside of the pump cover that should collect any dirt. I'll run it for a few weeks and see how it looks. If it's bad I'll switch to the uni filter and retest.
#399
Super Moderator
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Seems to be a lot of potential failure points with this air injection system.
#400
Racer
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No kidding...it looks like this thing can fail at any given moment LOL. I just sprayed a very light coat K&N oil on the Uni filter hoping to catch any fine dust that may passthrough the element. A friend saw my filter and asked me to get one for his Tundra too.
#401
Driver School Candidate
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I started my car and the check engine light and slip indicator light came on and stayed on with the 4LO blinking. Now the car seems to be in Limp Mode. Not sure if I should have the car towed to the mechanic or safe to drive it is about 40 miles.
#404
Driver School Candidate
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So the filter is intact but yet there is gunk, gaskets failing? So happy to to just shut this poor system down with a lifetime warranty bypass. If the bypass fails I can go back to this system until I get a bypass replacement.
Did you notice any gaskets in place or missing when you removed this sirvert55? What else could this be?
-Sivert55
#405
Driver School Candidate
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Yes, the filter material in the air pump was completely intact and remarkably clean.
As I said, i had the service done at a Toyota dealership by a technician who had done this exact same work on Toyota V8s. He said he sees gaskets looking like that all the time. He suspects it's due to the condensation that gathers in those aluminum valve bodies every time the vehicle cools down and sits in the humid air outside overnight, with no way for the condensed water to get out, no drain. The valves are identical between Lexus and Toyota 4.6 and 5.7 V8s. The fans, I think, were twinned in some later 5.7L V8s to provide more air volume, though. So the air pump part was specific to my 4.6 in this case.