So I have this thread started last week asking about balance shaft. I think it's not my problem.

I can only feel my vibration during idle. Stop light, parked but not moving..

here's my new observation.. my idle RPM is at lowest 600-650rpm, in my previous cars (mostly honda's) it was at 750-800rpm figures taken with engine fully warmed up.

Could this be why I have this vibration? Anyone by any chance checked their idle RPM?

Thanks

 

Once my car is warmed up it idles at 600 rpm. No vibration though.

 

I'll check mine today.

 

I'll also check mine tonight when I go to work. I do know that it idles at an insanely low RPM while at 70 MPH.

Which engine do you have? I guess that it wouldn't help you if you have the I4.

 

I think he has the I4 since he was asking about the I4 balance shafts in another thread.

Anyway, mine idles at 750 rpm fully warmed up. As I mentioned in the other thread, very smooth.

 

I see. I did check mine tonight on the way to work and it always seemed to stay around 750-800 when at idle.

 

You guys are making me second guess myself. I thought mine idled at 600 rpm, I'll double check at some point here and report back. IDS mode in sport. V6 SH-AWD.

 

Here is mine once warmed up, right at 600.

 

Thanks! It's indeed very low. Any vibration during idle?
Thanks

 

Nope, no vibration whatsoever. If you have some noticeable vibration get a tech to ride along with you.

 

My I4 TLX has the same issue in the ECON and Normal mode. Never driven in the Sport and the Sport + modes.

During idling, specifically waiting for signals, RPM reduction has been occurred several times (the engine was fully warmed) regardless of air-conditioning. At that time, not all, my TLX started to vibrate. Also my TLX has experienced 500RPM once.

So I drove it to a dealer service and let them find any issue relating with this. But they just compared my TLX's computer with their TLX, even though I showed some photos, which were taken at ~600 RPM conditions. And they concluded that "No error code was detected. No problem."

I think I have to take more photos when the RPM decrease around 500 RPM.

 

Didn't see this thread till now. I have a similar problem on my 2.4.

- when Fan ON, the car idle ~700rpm. Can feel the car vibrate at stop.
- if you turn OFF the fan, after the car is warmed up, the idle goes down to 600rpm. Vibration gets worst. I can even feel the vibration in the (brake) paddle.

Been in and out the dealearship in the past 2 months. With all new engine/transmission mounts, even a brand new transmission the vibration remains.

Now the dealer is saying this is "normal" after failed to address the problem.