Why does my Toyota RAV4 make a whirring noise when cold start?
It isn’t unheard of to have piston slap on the V8 if have that engine, but hearing the noise is the first step in diagnostics for the technician. If you can, have the dealer keep the car overnight and try it in the morning. Good luck! 2007 RAV4 w/the V6 mentioned in this article…and the rattle / whirring / noise during a cold start-up.
Why does my Lexus V6 rattle when I cold start the car?
The first cold start of the morning some Toyota and Lexus V6 owners, especially those who have the 2.5L or 3.5L V6, notice a loud rattle the first few seconds after startup. The noise disappears after the car builds oil pressure. The most common cause is the variable valve timing camshaft gear assembly leaking down oil pressure as it sits.
Why does my Toyota Highlander make a noise?
Sorry , this is a 08 Toyota highlander 3.5l The noise lay inside the intake camshaft gears, not the exhaust. While the exhaust gears are subject to failure on their own (the outer 5-point bolts loosen up and the gear disassembles itself), this root cause of the issue is the intake camshaft gears.
Why does my Lexus make a noise when I start the engine?
The noise lay inside the intake camshaft gears, not the exhaust. While the exhaust gears are subject to failure on their own (the outer 5-point bolts loosen up and the gear disassembles itself), this root cause of the issue is the intake camshaft gears.
It isn’t unheard of to have piston slap on the V8 if have that engine, but hearing the noise is the first step in diagnostics for the technician. If you can, have the dealer keep the car overnight and try it in the morning. Good luck! 2007 RAV4 w/the V6 mentioned in this article…and the rattle / whirring / noise during a cold start-up.
Why does my car rattle on a cold start?
When from a cold start I get this annoying startup rattle for 1-2 seconds then it’s gone. Engine is very quiet after this initial rattle. Car drives fine etc. As I am aware this is a widespread problem but nobody has a definitive answer to solve this.
What makes the engine rattle in a Toyota?
Other versions of the engine with these cam gear can also have issues with check engine lights and ticking noises from the engine while it runs. Toyota repair bulletin T-SB-0094-09 covers this more in depth (it’s a big procedure requiring engine removal).
Is it normal for a VW engine to rattle?
I’ve certainly heard the same thing from many modern VW/Audi engines and professionally I consider it normal and harmless, although I find their 4 cylinder engines to be absurdly noisy in general and find that startup noise and general engine noise unacceptable personally.