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.

A: Hi there, thanks for writing in. I’d be hap...

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

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: Door ajar light stuck on

Hello there, a variety of faults will cause your 2006 Scion xB to have the door ajar light on at all times. The likely faults would be a failing door switch, shorted wire, or a damaged wiring harness. If the...

Q: I'm only getting 5.5v to the fuel pump

Hi there. If you are only getting 5.5 volts at the red wire with the black stripe and battery voltage at the relay, then you have a bad connection in the circuit. You should also have battery voltage at fuse...

Q: My Toyota Venza after sitting a day or 2 won't start, the battery was checked at the Toyota dealership and they said it is perfect

Hello there, many potential faults will cause your 2013 Toyota Venza to not start after sitting. You have done well in having the battery tested already as this rules it out. The most common issues are aftermarket accessories such as...

Related articles

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.