Q: The engine is making rattling very high noise when you start the engine and constant.

asked by on

The engine is making very loud rattling noise while the engine is running. Also the oil gauge goes down while slowing down and stopping, even thought the oil is clean and full. Once you drive, the oil level goes up. The noise is so loud, that we do not use the vehicle. The vehicle was at the body shop to replace the radiator and the door. Before the repair of body work, the vehicle engine was running OK. The oil level was constantly checked, but the repairman said that when the vehicle came to them, it had no oil. There were no oil leaks.

My car has 141628 miles.
My car has an automatic transmission.

The fact that the oil pressure drops when slowing down or stopping would suggest that the oil pressure is lower at lower engine RPM’s. This means that the oil level volume is low. The oil capacity in an engine is designed to correlate with oil pressure at any given RPM. When it is full, there should always be constant oil pressure assuming there is no oil leaks. I would suggest having an expert from YourMechanic come to your home to diagnose your vehicle and make appropriate repairs to your vehicle.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. The engine is making rattling very high noise when you start the engine and constant.

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: Is my fuel pump bad?

This means your fuel pump is coming on like it should. The pump will cycle on for a few seconds and then turn off if you just turn the key to on. This should happen each time you cycle the...

Q: Car won't start after adding oil to I added oil drove for like 3 blocks and it died now it just turns over but will not start

Hello. The oil light is telling you the vehicle has low oil pressure. How low was the oil when you had to add it? If you have not check it since it stalled you should do that first. If it...

Q: Radio not very loud at full volume

Hello there. Many faults will cause your 1999 Ford Expedition to have low output from the stereo. The most common faults would be blown speakers, a failing radio, or a wiring harness fault. A qualified Technician such as one from...

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...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...