O2 sensor causing rough idle?
#1
Driver School Candidate
Thread Starter
Join Date: Apr 2009
Location: tx
Posts: 21
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
could a faulty 02 sensor contribute to a rough idle and even cause the engine to stall? This just started happening, even tho the CEL has been on for several months. tks
#2
Lexus Champion
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Yeah thats possible,it depends on what is triggering the light to come on. Get the code checked and post on here so we can point you in the right direction.
#3
Pole Position
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Give us a code, but your problem sounds like the IACV valve see this post from other site. A good cleaning fixes it most of the time.
http://us.lexusownersclub.com/forums...c=7408&hl=iacv
https://www.clublexus.com/forums/rx-...-write-up.html
http://us.lexusownersclub.com/forums...c=7408&hl=iacv
https://www.clublexus.com/forums/rx-...-write-up.html
#4
Moderator
![](https://www.clublexus.com/forums/images/ranks/rank-mod2.gif)
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
I would get the read and if there are more than one error code, then clear it. On first re-occurrence of CEL get another read. Dont loose the first read in case things go worse. The reason I suggest the second read is that the system may already be in a corner based on the basic problem and you may have secondary issues being reported in the first read.
I hope this makes sense.
Salim
ps: Usually CEL is not catastrophic, but ignoring it is not right. Example, you may loose you cat and the repair cost can snowball. Vehicle is telling you something, do not ignore ... at least get is read and then determine what the risks are.
I hope this makes sense.
Salim
ps: Usually CEL is not catastrophic, but ignoring it is not right. Example, you may loose you cat and the repair cost can snowball. Vehicle is telling you something, do not ignore ... at least get is read and then determine what the risks are.
#5
Driver School Candidate
Thread Starter
Join Date: Apr 2009
Location: tx
Posts: 21
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
darn! my code reader is not working! anyhow I cant recall the actually code it was one of the pre cat 02 sensors, (Mill bank something?). I will clean the IACV valve check back. thanks
#7
Super Moderator
![](https://www.clublexus.com/forums/images/ranks/rank-smod2.gif)
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
The code readers can sometimes go haywire. I had an issue with my Actron recently, but it turned out it was a bit dirty on the connection. However, I know others that have had issues as the vehicle has gotten older (or the battery) and have switched to a an OBD2 scanner that has a battery. I plan to get one of those shortly to be able to read other information out of the vehicle.
Trending Topics
#8
Driver School Candidate
Thread Starter
Join Date: Apr 2009
Location: tx
Posts: 21
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
I've missdiagnosed the issue. It only occurs when the AC is ON. I've posted a new thread. thanks
BTW I did clean the IACV valve but that didnt resolve it.
BTW I did clean the IACV valve but that didnt resolve it.
#9
Moderator
![](https://www.clublexus.com/forums/images/ranks/rank-mod2.gif)
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
CEL is on or off now?
Salim
Salim
Thread
Thread Starter
Forum
Replies
Last Post