Rough initial idling on RX350
Thread Starter
Pole Position
Joined: Jun 2006
Posts: 283
Likes: 1
From: CA
Rough initial idling on RX350
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?
Driver School Candidate
Joined: May 2006
Posts: 42
Likes: 0
From: TX
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.
Thread Starter
Pole Position
Joined: Jun 2006
Posts: 283
Likes: 1
From: CA
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.
Intermediate
Joined: Apr 2002
Posts: 324
Likes: 44
From: British Columbia
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..
Driver School Candidate
Joined: Jun 2006
Posts: 25
Likes: 0
From: CA
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.
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Driver School Candidate
Joined: Jun 2006
Posts: 25
Likes: 0
From: CA
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.
Driver School Candidate
Joined: Jun 2006
Posts: 25
Likes: 0
From: CA
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.
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