Skip the auto shop - Our mechanics make house calls

Q: Car is making a rattling while running but no noise when wheels are in the process of turning

asked by on

While driving or idling a rattling noise comes from the engine compartment but disappears while turning. Was told it was a bad power steering pump but the car steers fine. Haven't had a chance to thoroughly inspect the car yet , just wondering is anyone has had this issue to get a lead as to where to look first...thanks
My car has an automatic transmission.

A: Have the noise inspected when the engine is...

Have the noise inspected when the engine is idling to see if it is from the power steering pump or the belt to the pump is loose. Sometimes the belt will make noise until pressure is put on the belt and then the noise goes away. Try to spray the belt with some silicone spray or something like WD-40 to see if the noise seems to lessen or go away. If it goes away then have belt tightened or replaced if it has cracks. If the noise did not go away and only goes away when you turn the wheels, then the pump pressure valve is making the noise in the power steering pump and the pump would need to be replaced. I recommend having a technician look at the car in person for a proper diagnosis of the car's rattling issue. From there, they will be able to conduct the proper repairs.

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: Radio/navigation/telephone system freezes

Unfortunately, the only way to have this covered is to leave it at the dealer for an extended time to let them try and verify the problem. The technicians at dealerships will not do any work to a vehicle if...

Q: 2004 Toyota Matrix won't go into gear

Check to make sure the shift cables are reinstalled correctly. Make sure when the clutch pedal is pushed that the clutch slave cylinder is pushing the shift fork correctly. If you still have issues then contact a qualified mechanic, such...

Q: Seat belt won't work on rear driver's side.

If the seat belt will pull all the way out but simply not fasten to the latch, the latch has been compromised. Removal of the rear seat will be required and a new latch from the manufacturer installed. I would...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...