Skip the auto shop - Our mechanics make house calls

Q: Rattling in engine and won't turn on

asked by on

I was driving my car and I realize that I had it in low. I drove about 30 seconds in low at 40 mph until I realized why it was being so loud. I pulled over and turned it off. I turned it back on and it didn't want to start and there was a rattling under the hood. I proceeded to drive to see if it was okay, it would rattle out of first gear and was fine when I was driving. When I came to a low idle, it would shut off on me and eventually wouldn't turn back on.

My car has 113000 miles.
My car has an automatic transmission.

Hi there, thanks for writing in. I’d be happy to help.

There are a few possible causes of this, but by far the most common would be a failing timing belt. If it is loose or broke, then this will occur. I would definitely start by checking the oil level. If the oil level is low then it may be a major engine failure. If the oil level is fine then I would scan the computer for codes just to see if anything comes up, such as a valve timing code, which would mean there is a timing belt issue. At first it sounded like it may be a transmission issue, but that wouldn’t cause it to stall.

If you would like help diagnosing this engine issue, consider having an expert automotive technician from YourMechanic come to your home or office to inspect your vehicle for you, and make any repairs as needed.

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!
  1. Home
  2. Questions
  3. Rattling in engine and won't turn on

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: Should I replace my engine or buy a used car?

Considering that the price to replace your engine and the cost to purchase a new vehicle are in the same price range, I would choose the option that takes less time. This will remove this headache from your life sooner....

Q: Truck won't start

If this is the factory light on the dash that says "theft" and is blinking fast, then your theft system is activated. You may need to try another key first after locking all of the doors and waiting a half...

Q: Car rattling upon acceleration.

The noise you may be hearing is either the catalytic converter is rattling from being broken up inside it. You may be hearing an engine ping that sounds like a rattle from the engine. It could also be one of...

Related articles

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...
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 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...