Fast Driving and car Idling Heartbeat

[Ozzay]

Post gasket seal change and spark plug change...

My car after some fast driving (revving it out) at idle it will sit at around 600-900rpm but then rev counter goes a little up and down and you can feel the car shaking like its pulsating (when stopped and idling and in drive).

Not sure what it could be. Oil change about 1200 -1400 miles ago new filters etc. All connections hoses seem to be on fine. 

Other than this aside from the hydraulic lifter noise car seems to be OK.

 

[Mr Vlad]

I did a post about high unstable idle revs. I sorted it out and posted how I did it. Can't remember how I did it or where the post is. Search the forum within gen 2 IS. Did you unplug any multi plugs whilst doing the spark plugs? It sounds like it was the case and the ECU needs to re learn.

[Ozzay]

27 minutes ago, Mr Vlad said:

I did a post about high unstable idle revs. I sorted it out and posted how I did it. Can't remember how I did it or where the post is. Search the forum within gen 2 IS. Did you unplug any multi plugs whilst doing the spark plugs? It sounds like it was the case and the ECU needs to re learn.

Probably disconnected a lot during the gasket seal replacement and put it back together. Reset ECU again or just leave it you think. I will see after a week if that's what your saying. Anyways Vlad what oil you been using brand and grade? You done a flush?

[Mr Vlad]

My car has a full lexus service history and in the very near 2 years I've had it that's where its gone and going. As for your idle I'll try and find my post and post it here for you but don't hold your breath lol.

[Mr Vlad]

 

 

Try this.