Q: Why is my engine making a knocking noise.1997 Saturn SL2

asked by on

So the car is turning on but the timing chain is off, but is making a quick knocking sound.

My car has 190000 miles.
My car has an automatic transmission.

Hello. If you know that the timing chain is off then the engine should not run. If the timing is correct but the chain is loose due to other issues then that may be the knocking noise that you are hearing. Most of the time if the timing chain is off then there will be no compression in the engine and it can also cause some engine damage. If the chain is simply loose due to a failure in the timing chain or a tensioner issue then that may be the knocking noise you are hearing. I usually check the compression first and also remove the front cover to inspect it to see what it needs. If you need to have this engine knock checked, consider YourMechanic, as a certified mechanic can come to you to [diagnose why the engine is making this noise] https://www.yourmechanic.com/services/noise-from-engine-or-exhaust-inspection

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. Why is my engine making a knocking noise.1997 Saturn SL2

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: Q: Knocking sound.

A knocking sound within the engine is likely caused by low oil. I would first start by checking the oil level to ensure it is full. If the oil is low, you can top it off and see if anything...

Q: What is the trigger wire to my factory amp in my ( i believe its an ls2 or sl2 ) 2000 saturn

I would recommend looking at a wiring diagram for the radio system of your vehicle to determine the exact cause of this issue. Diagnosing this issue would be nearly impossible without doing so unfortunately.

Q: Car has trouble starting with the a quarter of gas left

Hello. There is usually a tray inside the fuel tank located under the fuel pump. This is used to get fuel to the pump when the gas is low or if the car is on an incline. This tray could...

Related articles

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...
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...
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...