Ls 430 Vibration

[colin4989]

Hi. Have vibration when heater on whether on ac or not, car in drive and foot on brake pedal so car is stationery. This noise disappears when I shift into neutral, take foot off brake pedal and drive or switch heating off. Can be quite a loud noise not sure if normal?

[colin4989]

Meant to say the noise comes from the between the engine area and dash board

[black400]

Is the car vibrating or the dash ?

[colin4989]

Sounds like the engine area. It's not a loose dash unfortunately

[black400]

could be missing on one of the spark plugs /engine mount a small posability.if it was me i would undo Battery fir half anhour and reconnect to reset the ecu .other wise get a diognostic done..

[colin4989]

Spark plugs just been done. Car been serviced at Lexus 1k miles ago. Interested at the engine mount. Will take into Lexus and check If it was would it not do it all the time even in neutral

[black400]

the higher revs out of net could bring it on, if just service it rules out plugs and clogged filter, lambadas sensors are another culprit but its only guess work untill you get a diog.keep us posted

[colin4989]

Will do

[colin4989]

Hi. Your shout about engine mounts might be close. I've been on this and other forums and the symptoms are the same, the only thing throwing me is it stops when I switch the heating/ac off

[black400]

may a longtrow but the Ac compresor / pump could be playing up , loose , but again it down to the revs Ac on revs up , of revs down .sit in car , IN PARK turn on ac , while watching rev counter , it rises slighly as in drive

[colin4989]

Hmmmm wonder if the ac pump staying on even if I switch it off and keep ventilation on?

[black400]

Sorry i lost page , its this that points me to a mount. Q if you put foot on trottle and rev slightly does it go away or when driveing.

[colin4989]

Yes or when I put in neutral or park

[black400]

another thing i do is when engine is vibrating look at the main block see if it is vibrating, if not its someting else , with a towel put your hand on bits and bobs and feel for vibration it may narrow

things down , .these a guesses but best i can do without being there ..i had a Jeep cherokee in for a sevice and it vibrated like hell , it came down to a oxagen sensor , running rough.ps i not a mechanic but have been dabbling in v8s for years.and always glad ti help were i can.

[colin4989]

Really appreciate it. You've given me some good pointers. Thank you

[colin4989]

Car booked in to Lexus next Monday. Will keep you posted

[colin4989]

It is apparently the plastic cover over the engine. To be fair the vibration has gone now they have packed? The cover

[black400]

Nice one a cheao fix .happy driveing