Skip the auto shop - Our mechanics make house calls

Q: rattling sound in the engine

asked by on

rattling sound when car is put in gear. mechanic recommends replacing timing chain tensioner. how mych would it cost? tnx

My car has 1900000 miles.

A: Hello there; many faults will cause a knock...

Hello there; many faults will cause a knocking noise when your 2012 Toyota Sienna is put into gear. The timing chain tensioner is one of the many possibilities. Other possible faults would be the flexplate, belt tensioner, idler pulley, engine mounts or a misfire condition. If you need assistance, a certified YourMechanic technician can be dispatched to your location to inspect your vehicle’s rattling noise, and replace the timing chain tensioner if necessary.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Loud squealing sound - 2014 Toyota Tacoma

Hello. Your description sounds like a clutch release bearing - aka throwout bearing. With only 30,000 miles, you might want to check in with Toyota. I don't know if they would consider it part of their powertrain warranty or if...

Q: Clutch pedal in Toyota pickup goes to the floor

When the clutch pedal is applied in a system such as yours, a piston is actuated in the clutch master cylinder, forcing fluid to act upon the pushrod of the slave cylinder. The slave cylinder's pushrod then activates the clutch...

Q: How do I program and reset Remote Start?

Remote start is a helpful feature. Remote Start allows you to start your vehicle before you get into it and keeps it running for a certain amount of time. This is particularly helping in hot or cold weather conditions because...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.