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: I went to start it and it turns over but just wont start

Your Jimmy most likely has a week fuel pump. A cold motor needs more fuel to run than a fully warmed motor. With this motor you can add fuel to get it started. I suggest starter fluid because it can...

Q: What type of oil does an Audi A4 quatro 2009 use?

You can use 5W-40 synthetic oil that meets Volkswagen standards 502.00 and 505.00. Alternatively, you can use 5W-30, 0W-40, or 0W-30. If the light you are referring to is a low engine oil level warning light and the oil level...

Q: Rusted brake line - 1999 Mercury Sable

Hey there. 3/16 inch diameter brake line tubing is used on virtually all cars and trucks made in the world. The more important issue is what type of end fittings you have and type of flare (bubble, inverted, etc.). That...

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 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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...