Q: My car would shake violently when starting, and now it won't start at all.

asked by on

Last week I was taking deliveries for work. 3 times, it would shake quite violently upon startup. After that, it would let me drive. I arrived at a delivery, and when I went to leave, my car would not turn over. We had AAA tow it to a mehanic who said that he found nothing wrong, and that it could have been condensation in the gas tank. Today it ran fine to work and back, about 40 miles total, but when I went to leave again it would not turn over.

My car has 130000 miles.
My car has an automatic transmission.

Hi there. The technician you went to could be on to something there with the shaking and possibly having moisture in the fuel tank. However, it sounds like you could be having an intermittent electrical component fault which can be difficult to trace when everything is working properly.

If the vehicle does not turn over, then the starter is not engaging. Check for a loose battery terminal first and have a battery test performed with a digital tester to determine the cold cranking amps and state of health.

The starter could be faulty with worn contacts internally. Sometimes they complete the circuit, sometimes they don’t. Worn contacts can create intermittent problems and require replacement of the starter assembly to repair. There could also be a relay, ignition switch, or wire harness fault.

Inspecting these items requires the use of a digital volt/ohm meter and the electrical wiring diagram. I strongly suggest acquiring a qualified technician to perform an inspection and avoid replacing unnecessary parts. If you would like to have this scoped out by an expert, a certified professional from YourMechanic can come to your car’s location to diagnose the hard start and follow through with repairs.

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. My car would shake violently when starting, and now it won't start at all.

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: Where is the neutral safety switch located on a 2005 Chevy impala

The switch is mounted on the top of the transmission case and is visible as you look down into the right rear portion of the engine compartment (as you stand facing the front grille). It will be roughly below the...

Q: Q: Fuel pump not getting power

The only quick fix I can think of is to check the inertia switch on the left side of your truck. It is a switched designed to shut off the fuel pump in the event of a crash. As they...

Q: No power at fuel pump fuse

Hi there, thanks for writing in about your 2007 Dodge Nitro. It is probably a faulty fuel pump relay which is located in the TIPM (Totally Integrated Power Module). It is not removable as it is soldered in place. You...

Related articles

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.