Q: car shakes badly after start when sitting briefly but is okay after sitting hours

asked by on

My son went to his apartment for lunch yesterday and after 45 mins he started it to drive back to work. It was shaking so violently that he could not drive it. He said, "feels like the engine is going to fall out". He got a Uber rider to work, then home, and started it again. It behaved normally (it had sat for hours). He drove it to AutoZone and left it running while they checked the codes, which indicated cylinder misfire and bad fuel injections (P0202 and P302). He bought a cleaning product and filled up with gas, but the car shook violently again at starting at the gas station. He waited an hour and it still shook, so got a friend to pick him up and went home. He went back this morning and car started normally and he drove it 30 minutes to allow the cleaning product to mix with fuel. He is waiting to see if this product helps, but I'm concerned.

My car has 115000 miles.
My car has an automatic transmission.

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. car shakes badly after start when sitting briefly but is okay after sitting hours

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 have a 2016 Dodge Charger Scat Pack. Had wheels, tires, and springs installed and since then the car makes a bloop noise.

The noise is probably a consequence of an improper installation of the aftermarket parts and/or the parts are incompatible (inappropriate) for the vehicle design. Generally speaking aftermarket replacement parts are less desirable than OEM parts. Once you start installing vehicle...

Q: Service engine soon light came on after the traction control light came on and the slip light was constantly on

This light comes on when the computer has detected that something may be malfunctioning in the traction control system. The traction control system monitors the steering and stability of the vehicle and engages when loss of traction has been detected....

Q: thermastat stuck removed now the car isnt regestering hot but can hear boiling from motor

First off, you need a working thermostat in the car for it to function properly. If you removed the thermostat to fix an overheating problem, you will need to install a new one and begin the process of diagnosing the...

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 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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...