Why does my Toyota VVT Rattle at Cold Start?
The VVT internal component could rattle when the lock-pin, which latches to the VVT housing and secures the internal components to maintain the camshaft in the most delayed position, unlatches at cold-start. Toyota conducted reproduction testing and was able to duplicate noise but was unable to duplicate the loose bolts condition.
What makes a rattling noise in the front end?
Rattling, Clunking Noise in Front End: This Noise Is Driving Us This noise is driving us bonkers. When we hit a rough place in the road, the front end rattles or clunks. If we are on a gravel road, the nose is horrible. Sounds like the front end is falling out. We replaced stabilizer links, but no improvement. New struts did not help, either.
Why does my CVT make a tapping noise?
We have been hearing a subtle rattling or tapping noise for the past 1,000 miles. We hear it at slow speeds, most often when we step on and off the gas. I think it’s coming from the tranny. Today it’s been in the shop all day to get it checked out. The tech said it was ‘strange’.
Why does my Lexus VVT make a rattling noise?
The noise is definitely not associated with typical cold start valve ticking, etc. that many people have. It is definitely coming from the intake-side of the VVT system. Toyota has identified certain Lexus models built between 2006-2011 with this VVT noise problem, and issued a voluntary recall.
Why does my car rattle on cold start?
If you hear engine rattle noise from your engine on cold start, and the engine rattle noise goes away after a few seconds, and the engine rattle noise comes from the side of the timing cover we will explain what could cause that. Most new engines nowadays are equipped with timing chain.
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.
What should I do if my car engine is rattling?
Yup, it’s another problem that causes engine rattling, especially at idle. It’s a fairly involved job to replace the valve lifters, and it’s best to change the whole set. Repair costs vary a lot, from $470 to $2,100, all because engines are so different in their parts and labor processes.
What to do when Honda CRV Rattles at start up?
Once fitted, with the actuator facing you, carefully rotate it counterclockwise until it engages the camshaft locator pin. When installed and rotated this way the VTC actuator will not lock. Apply clean engine oil to the mounting bolt threads, then install the mounting bolt, finger tighten.
The VVT internal component could rattle when the lock-pin, which latches to the VVT housing and secures the internal components to maintain the camshaft in the most delayed position, unlatches at cold-start. Toyota conducted reproduction testing and was able to duplicate noise but was unable to duplicate the loose bolts condition.
The noise is definitely not associated with typical cold start valve ticking, etc. that many people have. It is definitely coming from the intake-side of the VVT system. Toyota has identified certain Lexus models built between 2006-2011 with this VVT noise problem, and issued a voluntary recall.
Why does my car rattle when I start it up?
Bolts used to secure the variable valve timing control device can become loose, causing the vehicle to stop while being driven. Early warning for this condition can be identified as a brief rattle noise for approximately 1 second upon a cold start-up.