IS200t - Boost issue
07-13-18, 12:01 PM
#61
Lexus Champion
i imagine though your 2nd, 3rd regulators were newer than my car so I'm not sure how the build date can have anything to do with it. maybe the humidity in FL? I'd still like to crack one open and see what's inside. is the valve being clogged by soot? is there a filter backing up inside??
07-13-18, 12:45 PM
#62
Lexus Test Driver
I would love to open one up. Have dremel
07-14-18, 11:10 AM
#63
07-14-18, 02:27 PM
#64
Lexus Champion
07-16-18, 10:09 AM
#65
Lexus Test Driver
Just by looking at the part it seems the elongated part houses some sort of piston or plunger that regulates the in/out plumbing at the bottom based on signal from the computer. But just a guess. I'd probably start cutting at the round housing part.
07-25-18, 08:36 PM
#67
Got the part in but I have no clue where to start to install it myself. Can anyone give me some guidance? Is there anything in the way that I need to remove first or is it easily accessible without removing anything? I can't even see where the stock location is by looking inside the engine bay.
07-29-18, 12:57 AM
#68
So I finally got to replacing the valve but I wont be able to send you the broken one because I didn’t remove it from the car. The screws to remove it are in a really tough to get to spot so I just left it in there and put the new one at the top of the engine bay
07-30-18, 08:58 AM
#69
Lexus Test Driver
Got the part in but I have no clue where to start to install it myself. Can anyone give me some guidance? Is there anything in the way that I need to remove first or is it easily accessible without removing anything? I can't even see where the stock location is by looking inside the engine bay.
07-30-18, 01:49 PM
#70
Lexus Champion
I still have the original regulator in place due to that issue as well. I relocated the replacement in an easily accessible spot as you can see on my earlier post.
07-30-18, 03:40 PM
#71
I like the location of yours much much more than where I put mine. What did you use to get it to stay there? I just zip tied mine around the stock intake tube and it looks really ghetto lol I need to move it.
07-30-18, 07:21 PM
#72
Lexus Champion
01-10-19, 09:55 AM
#73
Driver School Candidate
Join Date: Jan 2019
Location: FL
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Hi Everyone,
I am wondering if the issue I am experiencing is the same being discussed. See attached video for example, that was wide open throttle on an open road, my boost won't go past 0. I have had the actuator assembly replaced twice times by my local dealer, but they believe that nothing is wrong and that my gauge is just malfunctioning.
The car is driving like trash, I literally have to floor it to get up to cruising speeds.
https://imgur.com/a/hJisn5t
I am wondering if the issue I am experiencing is the same being discussed. See attached video for example, that was wide open throttle on an open road, my boost won't go past 0. I have had the actuator assembly replaced twice times by my local dealer, but they believe that nothing is wrong and that my gauge is just malfunctioning.
The car is driving like trash, I literally have to floor it to get up to cruising speeds.
https://imgur.com/a/hJisn5t
01-30-19, 06:59 PM
#74
Intermediate
Hi Everyone,
I am wondering if the issue I am experiencing is the same being discussed. See attached video for example, that was wide open throttle on an open road, my boost won't go past 0. I have had the actuator assembly replaced twice times by my local dealer, but they believe that nothing is wrong and that my gauge is just malfunctioning.
The car is driving like trash, I literally have to floor it to get up to cruising speeds.
https://imgur.com/a/hJisn5t
I am wondering if the issue I am experiencing is the same being discussed. See attached video for example, that was wide open throttle on an open road, my boost won't go past 0. I have had the actuator assembly replaced twice times by my local dealer, but they believe that nothing is wrong and that my gauge is just malfunctioning.
The car is driving like trash, I literally have to floor it to get up to cruising speeds.
https://imgur.com/a/hJisn5t
The throttle body could be getting stuck such that it is not opening enough for pressure to build in the intake manifold.
Have you completed a leak check? If there is a leak downstream of the turbo, the air would be exposed to atmosphere resulting in 0 boost.
01-30-19, 07:08 PM
#75
Intermediate
Were you ever able to get your hands on the part to open up? I am wondering which mechanism(s) is acting up to cause oscillating boost. The rocking motion to me seems to be occurring at a certain frequency. This makes me wonder if the ECU is able to accommodate for this change quickly enough to adjust injection to prevent out of line fuel/air ratios.