16 IS200T strange engine noise! help!

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Jan 21, 2019 | 08:21 AM

#46

E46CT

Lexus Test Driver

Joined: Mar 2016

Posts: 9,509

Likes: 2,576

Quote:

Originally Posted by EXE46

I have an issue with my IS200T. As of late, there's been a hesitation to accelerate. The other day, car completely shut down, luckily i was just moving from a stop light and going into a gas station. Car lost power, I slowly pulled in and Check engine light came on. Added some gas, checked fluids, all seem fine.Also, I only put premium grade gasoline in this thing. Car currently has less than 28k miles so it's not like service is due either. Restart car and it drove normal but it still has been hesitating to accelerate. I will take it in this month for the 30k Mile service and report to the service people. I made sure i took a video with the check engine on.

Would not recommend this motor to anyone, just get an IS350. Luckily my lease ends next summer and with Lexus pull ahead program I should be out of this car in May.

Are you 200T folks remembering to replace the spark plugs. If i'm not mistaken Lexus says they should be replaced at 30k. If you are tuned, half that.

I'm at 27k so far, original everything, no ill effects. I'll be letting the next owner (or dealer) replace the plugs though =D

Jan 21, 2019 | 10:01 AM

#47

Sheddy

Racer

Joined: Feb 2012

Posts: 1,729

Likes: 409

From: South FL

Quote:

Originally Posted by Max838

Have the same issue with that valve. So just curious where was it located before you placed it next to the dipstick

The valve is located on the intake manifold. See the diagram below with part number 25819.

Jan 21, 2019 | 03:33 PM

#48

EXE46

Lead Lap

Joined: Sep 2016

Posts: 581

Likes: 27

From: Sofla

My car was loosing power and shutting off at around 27k. I bury my foot and it would go into limp mode and loose complete power, consequently had to shut down and restart. Lexus had to replace spark plugs and fuel injectors. This motor sucks, would not recommend. Stock motor, no mods but driven like I would my old BMW (not like your typical toyota driver).

Did toyota forgot how to build a good turbo motor?

Jan 23, 2019 | 12:04 PM

#49

LouisV

Pit Crew

Joined: Apr 2017

Posts: 164

Likes: 10

From: Ontario

Quote:

Originally Posted by vanillatag

I have exactly the same noise issue, and it is indeed the vacuum valve regulator is making that noise. It seems this particular part is not very reliable. I am currently waiting for my 2nd replacement of this part.

The first time I had it replaced was around 10,000 miles. Now at 15,000 miles, the new part is making the same noise again. I just brought the car to the dealer last week and I am currently waiting for the replacement

other then the noise, how do you know you have the issue?

Jan 23, 2019 | 12:53 PM

#50

Sheddy

Racer

Joined: Feb 2012

Posts: 1,729

Likes: 409

From: South FL

Quote:

Originally Posted by LouisV

other then the noise, how do you know you have the issue?

Thanks to CL member Patchez.

Jan 27, 2019 | 07:30 PM

#51

hanomag251

10th Gear

Joined: Jan 2015

Posts: 10

Likes: 4

From: CA

Quote:

Originally Posted by Sheddy

The valve is located on the intake manifold. See the diagram below with part number 25819.

Could you tell us how you got to the valve? Its buried deep inside. Did you have to remove the intercooler overflow tank and hoses?

I might have to keep replacing it myself after the warranty expires.

Jan 28, 2019 | 11:21 AM

#52

pngo

Intermediate

Joined: Jan 2019

Posts: 390

Likes: 82

From: San Diego

Can anyone with experience with this failed part help me identify if the noise in this video sounds like it?

I hear an audible “chatter” noise but I’m not really picking up a fan noise.

Engine Noise Video

Thanks!!

Last edited by pngo; Jan 28, 2019 at 12:10 PM.