Rough initial idling on RX350
#1
Pole Position
Thread Starter
Join Date: Jun 2006
Location: CA
Posts: 283
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
I experienced this exact problem, did a search on the net and found the following:
Why does Lexus RX350 idle very rough in gear and standing still for the first 3 minutes or so after sitting all night?
No answer was given. Anybody know why or have this problem?
Why does Lexus RX350 idle very rough in gear and standing still for the first 3 minutes or so after sitting all night?
No answer was given. Anybody know why or have this problem?
#3
Pole Position
Thread Starter
Join Date: Jun 2006
Location: CA
Posts: 283
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Rougher than normal, sounds like an older car. It goes away and becomes quiet after a little while. It's obviously computer-controlled, but it happens only after it sits overnight.
#4
Driver School Candidate
Join Date: May 2006
Location: TX
Posts: 42
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
I take that when you say rough means higher rpm and louder than normal. I'm not a car expert, but all my cars idle at higher rpm and louder when cold. Even just leaving the car overnight can cool down the engine enough to have a cold start. As long as the engine returns to normal idling rpm after a few minutes, I wouldn't worry about it.
#5
Pole Position
Thread Starter
Join Date: Jun 2006
Location: CA
Posts: 283
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
It doesn't happen when the engine is running (in park), but when it's in gear. It's quiet when in P and becomes loud when shifted to D. I'm in California and it doesn't get cold at night.
#6
Intermediate
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Next time when you drive.. start it.. put it D then record the idle... for about 2-3 mins.. See what kind of results you get
I'll try it tomorrow...
When you haven't driven the car for about 5 hrs or something or is has been sitting over night- the car is cold (engine is not warmed up). The car usually has a higher idle than when its warm..
I'll try it tomorrow...
When you haven't driven the car for about 5 hrs or something or is has been sitting over night- the car is cold (engine is not warmed up). The car usually has a higher idle than when its warm..
#7
Driver School Candidate
Join Date: Jun 2006
Location: CA
Posts: 25
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Originally Posted by 32kcolors
It doesn't happen when the engine is running (in park), but when it's in gear. It's quiet when in P and becomes loud when shifted to D. I'm in California and it doesn't get cold at night.
Trending Topics
#8
Pole Position
Thread Starter
Join Date: Jun 2006
Location: CA
Posts: 283
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Originally Posted by akkidy
Do you have the AC on?
#9
Driver School Candidate
Join Date: Jun 2006
Location: CA
Posts: 25
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Originally Posted by 32kcolors
Yes, it's usually on. Is that the culprit? My wife took the car this morning so I wasn't able to check it.
#10
Driver School Candidate
Join Date: Jun 2006
Location: CA
Posts: 25
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
32kcolors, I just checked mine today and it seems that the noise I was referring to got nothing to do with the engine but rather with the power steering when turned fully to the right or left and held in that position for a while. I believe that's normal for all cars and actually should not be done so as not to damage the power steering.
I did notice that rpm is higher on cold start, but I don't hear or feel anything out of the ordinary to be a concern at all. As long as your high idling is steady and not erratic, and then the idling gets smoother when the engine gets warmer, you should not be concerned.
I did notice that rpm is higher on cold start, but I don't hear or feel anything out of the ordinary to be a concern at all. As long as your high idling is steady and not erratic, and then the idling gets smoother when the engine gets warmer, you should not be concerned.
Thread
Thread Starter
Forum
Replies
Last Post
MattLS400
LS - 1st and 2nd Gen (1990-2000)
190
03-18-21 03:28 PM