Throttle body, low idle Help please!
#1
Driver
Thread Starter
iTrader: (1)
Join Date: Apr 2002
Location: California
Posts: 152
Likes: 0
Received 0 Likes
on
0 Posts
Throttle body, low idle Help please!
Hello all.
I need some help.
I have '99 GS4 with 115,000 miles on it.
I purchased it CPO w/ 38K miles on it. At 45K the throttle body went out and had it replaced under warranty. From then on i noticed the low idle, and had my car die on my while driving a few times. Lexus replaced my throttle body again at 58K which was about a year and a half ago. I continued to complain about the low idle and how my car was still dying on me. They said they couldn't find anything wrong with my car, so nothing was done. So at 112K my car dies on me again and wouldn't even start one morning, dealership says i need to clean my throttle body...which i got done. Now at 115K , engine lights turn on...and now lexus says my throttle is failing and needs to be replaced. Of course all my warranties are up. I'm not about to pay $1000 for another TB.
If anyone has suggestions I would appreciate it.
Thanks
Chris
I need some help.
I have '99 GS4 with 115,000 miles on it.
I purchased it CPO w/ 38K miles on it. At 45K the throttle body went out and had it replaced under warranty. From then on i noticed the low idle, and had my car die on my while driving a few times. Lexus replaced my throttle body again at 58K which was about a year and a half ago. I continued to complain about the low idle and how my car was still dying on me. They said they couldn't find anything wrong with my car, so nothing was done. So at 112K my car dies on me again and wouldn't even start one morning, dealership says i need to clean my throttle body...which i got done. Now at 115K , engine lights turn on...and now lexus says my throttle is failing and needs to be replaced. Of course all my warranties are up. I'm not about to pay $1000 for another TB.
If anyone has suggestions I would appreciate it.
Thanks
Chris
#3
Lexus Test Driver
Join Date: Jul 2005
Location: il
Posts: 1,015
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by CKIM
Hello all.
I need some help.
I have '99 GS4 with 115,000 miles on it.
I purchased it CPO w/ 38K miles on it. At 45K the throttle body went out and had it replaced under warranty. From then on i noticed the low idle, and had my car die on my while driving a few times. Lexus replaced my throttle body again at 58K which was about a year and a half ago. I continued to complain about the low idle and how my car was still dying on me. They said they couldn't find anything wrong with my car, so nothing was done. So at 112K my car dies on me again and wouldn't even start one morning, dealership says i need to clean my throttle body...which i got done. Now at 115K , engine lights turn on...and now lexus says my throttle is failing and needs to be replaced. Of course all my warranties are up. I'm not about to pay $1000 for another TB.
If anyone has suggestions I would appreciate it.
Thanks
Chris
I need some help.
I have '99 GS4 with 115,000 miles on it.
I purchased it CPO w/ 38K miles on it. At 45K the throttle body went out and had it replaced under warranty. From then on i noticed the low idle, and had my car die on my while driving a few times. Lexus replaced my throttle body again at 58K which was about a year and a half ago. I continued to complain about the low idle and how my car was still dying on me. They said they couldn't find anything wrong with my car, so nothing was done. So at 112K my car dies on me again and wouldn't even start one morning, dealership says i need to clean my throttle body...which i got done. Now at 115K , engine lights turn on...and now lexus says my throttle is failing and needs to be replaced. Of course all my warranties are up. I'm not about to pay $1000 for another TB.
If anyone has suggestions I would appreciate it.
Thanks
Chris
#5
Lexus Champion
Originally Posted by koolaidman
off hand i dont remember if its fly by wire but if its not u can adjust the tb cable
A: It's o.k to open the throttle wide open because all of the conditions are o.k.
B: No, it's not o.k to the wide open condition because one of the wheel is spinning.
This's just an example of the drive by wire.
#6
Driver
Thread Starter
iTrader: (1)
Join Date: Apr 2002
Location: California
Posts: 152
Likes: 0
Received 0 Likes
on
0 Posts
Thanks for the replies...
Well after running their tests I guess the computer had an error code # P0505 pop up.
So they recommend replacing the TB again. They said something about the computers in the car not getting the throttle body to work w/ the VSC to get my car to idle where it needed to be.
I've talked to corporate a few times and written letters. I called them and they said they would get back to me in a few days. That should be tomorrow. So hopefully they will be able to do something.
Recently i've noticed my low idle problem is different everday. Somedays having the AC will help other days it won't. So its pretty random.
I will try tighening the cable.
But I was also wondering if anyone out there has had this many problems with their TB on a GS400? This would be my 3rd time replacing it in 3 years.
Thanks
Well after running their tests I guess the computer had an error code # P0505 pop up.
So they recommend replacing the TB again. They said something about the computers in the car not getting the throttle body to work w/ the VSC to get my car to idle where it needed to be.
I've talked to corporate a few times and written letters. I called them and they said they would get back to me in a few days. That should be tomorrow. So hopefully they will be able to do something.
Recently i've noticed my low idle problem is different everday. Somedays having the AC will help other days it won't. So its pretty random.
I will try tighening the cable.
But I was also wondering if anyone out there has had this many problems with their TB on a GS400? This would be my 3rd time replacing it in 3 years.
Thanks
Trending Topics
#8
Driver
Thread Starter
iTrader: (1)
Join Date: Apr 2002
Location: California
Posts: 152
Likes: 0
Received 0 Likes
on
0 Posts
More help needed.
New update 9/9/05.
I couldn't find any cracks.
But after a few phone calls to corportate. They agreed to pay half of the bill for the new throttle body. I wasn't in the mood to fight it anymore so i agreed.
The throttle body was replaced and now they are telling me one of my fuel injectors is bad and that it will need to be replaced.
I checked out my car last night after the TB was replaced, but before anything was done with the fuel injectors. The car was the exact same condition as when i first took it in. The same check engine light and the 2 VSC lights, also the car was vibrating heavily as it had been.
How do I figure out if my TB was really bad? It was only installed 2 years ago (maybe 50K miles since.) I'm thinking they misdiagnosed it. Any suggestions on how i can prove it? Because they are sticking to the story that both are bad.
Thanks for you help.
I couldn't find any cracks.
But after a few phone calls to corportate. They agreed to pay half of the bill for the new throttle body. I wasn't in the mood to fight it anymore so i agreed.
The throttle body was replaced and now they are telling me one of my fuel injectors is bad and that it will need to be replaced.
I checked out my car last night after the TB was replaced, but before anything was done with the fuel injectors. The car was the exact same condition as when i first took it in. The same check engine light and the 2 VSC lights, also the car was vibrating heavily as it had been.
How do I figure out if my TB was really bad? It was only installed 2 years ago (maybe 50K miles since.) I'm thinking they misdiagnosed it. Any suggestions on how i can prove it? Because they are sticking to the story that both are bad.
Thanks for you help.
#9
I don't think Lexus knows the root of the problem, and neither are we. I believe a lot of members here have the same problem as you have. I have a 2000 GS4 and not having the problem yet. However, my RPM at idle no AC or any thing on is always around 400 at the second tick mark. I expect the RPM to be around 550 mark. The car has not die on me yet.
#10
Lexus Test Driver
Dude that sucks!
They definely misdiagnosed and now you need to ask for your money back and go do a different mechanic.
By the way I also have a 2000 with low idle, NO AC the car dies in stop and go traffic.
Keeping the AC on has been the solution for about two years.
Hope you didn't pay yet or used a credit card.
CANCEL THAT CHECK!
They definely misdiagnosed and now you need to ask for your money back and go do a different mechanic.
By the way I also have a 2000 with low idle, NO AC the car dies in stop and go traffic.
Keeping the AC on has been the solution for about two years.
Hope you didn't pay yet or used a credit card.
CANCEL THAT CHECK!
#11
Oh no. How many mile your car has? My is 52K miles.
Originally Posted by alexulan
...
By the way I also have a 2000 with low idle, NO AC the car dies in stop and go traffic.
...
By the way I also have a 2000 with low idle, NO AC the car dies in stop and go traffic.
...
#12
Driver
Thread Starter
iTrader: (1)
Join Date: Apr 2002
Location: California
Posts: 152
Likes: 0
Received 0 Likes
on
0 Posts
I've had my car die on me about 6 times while on the road.
I happened on the offramp off the 405 on a on ramp....everywhere.
Its definetly stressful driving a car that could die anytime.
I've tried to fight that with Lexus with no luck.
Anyone know where I can take my old TB and have it checked to see if its still good?
To prove to lexus that they were wrong.
I happened on the offramp off the 405 on a on ramp....everywhere.
Its definetly stressful driving a car that could die anytime.
I've tried to fight that with Lexus with no luck.
Anyone know where I can take my old TB and have it checked to see if its still good?
To prove to lexus that they were wrong.
#13
Lexus Fanatic
Originally Posted by CKIM
I've had my car die on me about 6 times while on the road.
I happened on the offramp off the 405 on a on ramp....everywhere.
Its definetly stressful driving a car that could die anytime.
I've tried to fight that with Lexus with no luck.
Anyone know where I can take my old TB and have it checked to see if its still good?
To prove to lexus that they were wrong.
I happened on the offramp off the 405 on a on ramp....everywhere.
Its definetly stressful driving a car that could die anytime.
I've tried to fight that with Lexus with no luck.
Anyone know where I can take my old TB and have it checked to see if its still good?
To prove to lexus that they were wrong.
Thread
Thread Starter
Forum
Replies
Last Post
ankurdave
LS - 1st and 2nd Gen (1990-2000)
7
03-13-17 08:20 PM
DarwinX
RX - 1st Gen (1999-2003)
26
05-05-10 09:34 AM
TGRich
Performance & Maintenance
3
03-05-05 08:27 PM