any mods to exhaust or is it stock?

 

any changes to your in-n-out burger? animal style perhap? or animal style fries?

let me know....and now you're making me hungry.

 

well i do have an intake on, but the car did it a couple times before i put the intake on.. hmm.. thanks for those links "E" ..

 

I had this same problem. Mine used to shudder during idles and even when i was driving sometimes.

I took it to the dealer and they ran a bunch of tests. Apparently, this is all linked to the "engine crank nose start up" problem.

They replaced cam gears and valve springs i think.

No longer shudders during idles.... startups... or driving. I can give a full list of things they changed when I get my car back (in the dealer for recalls).

 

i've had that problem along time ago. but nowadays i've been noticing the drop in RPMS frequently while stopped ALOT.. the little rumble shake. nobody still doesnt know what it is?

 

Took the car in for the service campaign and I mentioned the shaking. My SA said Lexus is aware of the problem but there's not a lot of complaints to warrant another campaign. He mentioned about replacing the cam gear as well. BTW, part(s) is a special order.

So for you guys who have this issue, make sure to tell the dealer or LEXUS. Have them order the parts first before you get an appointment.

My car is still in the dealer because they have to wait 2 to 3 days for the parts to come. I left my car Saturday at 11AM. Service campaign job done by Monday afternoon. SA advised me to leave the car so they could start fixing the "shaking problem" as soon as they receive the parts. Car will be ready by midweek next week per SA.

Hopefully they fix the problem.

Will let you guys know exactly what they replace/fix when I see the work invoice.

 

Really. Interesting I will have to mention this to my dealer since this has been happening to me as well on and off every now and then when at stop signs or red lights.

 

this will rarely happen to mine too at a stop light, it's like a slight shiver. i have an 09 250.

 

your car is brand new though...

 

Check your Vtec Fluid.

 

Pulled up the paper work for this repair from way back. Hope this helps:

EG7027 ENG KNOCK @ COLD STRT 06-07 IS250/350

2 13050-31121 Gear Assy, Camshaft
1 11328-31030 Gasket, Timing Chain
4 11159-0P010 Gasket, Camshaft Bea
2 90430-A0001 Gasket
1 23915-46011 Insulator, Fuel Pump
1 11214-31020 Gasket, Cylinder Hea
1 11213-31040 Gasket, Cylinder Hea
3 17176-31050 Gasket, Air Surge Ta

65178 Camshaft Gear Defective, Performed TSBI EG017-7 R-R Both Bank1 and Bank2, Intake camshaft gear sub assy.
--------------------
Found Miss Fire Codes P303, P304 and P306

Repairs per TSB EG019-06

24 13750-31020 Adjuster Assy, Valve
24 90501-30030 Spring, Compression
24 13741-0p010 Retainer, Valve Spri
4 90430-16012 Gasket
4 90430-16016 Gasket
17 90105-06323 Bolt, Flange
4 90105-08456 Bolt, Flange
2 90119-06980 Bolt, w/Washer
1 04111-31530 Gasket Kit, Engine O