Skip the auto shop - Our mechanics make house calls

Q: Engine is knocking and it shakes the car while idle.

asked by on

I was approaching a red light and my car started to stutter when it downshifted to first gear. When I came to a complete stop it started to shake and cut off. I managed to pull over add some fluids (it was really low on oil and ATF) . Crank it back up to take it home and it seemed as if it was having trouble when it shifts out of first gear. I had to let off the gas in order for it to shift gears. And let's not forget to mention the clackng noise when the car is started. Before it was only when I accelerated. What could be the problem?

My car has 242000 miles.
My car has an automatic transmission.

A: Hello there, you have a few different thing...

Hello there, you have a few different things going on with your 2006 Ford Fusion. The clacking noise you have described on start up is most likely rod knock from low oil. If the oil level is left low and the engine is continued to be driven mechanical damage can result. It is a similar story for the transmission, it is not usual to have shifting problems when the fluid level drops whether from a leak or wear and tear. A qualified technician such as one from YourMechanic should inspect the noise in your vehicle immediately to determine what is going on.

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・Save up to 30%

Get a quote

What others are asking

Q: Not able to drive or reverse.

There could be broken linkage in the column/console, a broken shifter cable, a broken u-joint, or any of several other possible causes. A certified mechanic should be able to take a look at it and diagnose the problem, and if...

Q: When I come to an abrupt stop, the engine stumbles like it wants to stall. Any thoughts?

A low transmission fluid level from a leak is more likely to cause the transmission to slip, especially on hills. If the torque converter clutch of the electronics that control it are sticking on, this situation may cause the engine...

Q: How do you operate the rear Reading lights?

If your car is equipped with Reading lights in the rear, they’re built into the rear Dome lights. You’ll find one on each side (driver and passenger). These lights are designed to provide illumination for passengers in the back seat,...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.