Q: Engine shakes intermittently after warmed up with car in "drive" at a stop. Single shakes at a time.

asked by on

Hello,

My instructor at the technical school sprayed my throttle plate (butterfly) with cleaning fluids to clean plate and throttle body. There was just some carbon buildup inside.

Later we (students only) changed the spark plugs with NGKs that came originally on the car. No torque wrenches were used. Coil packs for cylinders 4 and 6 had been incorrectly connected and led to P0300. We corrected the problem. Engine ran for a minute or so on 3 or 4 different engine starts with the issue before we swapped connectors.

A couple days later I notice that while my car is stopped while in drive, the car engine does a single shake. It happens again the following day. Both times were after I had taken short trips and warmed up the engine. Just yesterday I took the car on a long trip and every time I came to a stop, the single shakes occurred often. So it definitely happens after engine is warmed up.

Runs fine on the highway. I even get the same fuel economy as before.

Any ideas?

Thanks!

My car has 149600 miles.
My car has an automatic transmission.

Hi there. There could be an issue with the fuel system or with the ignition system on your vehicle. It seems that the engine is having a minor misfire. Check the spark plug wires and see if any of them have a split in it causing them to go to ground. Also, make sure that the wires are attached to the spark plugs correctly. The engine and transmission mounts will also make the bumping feeling as the engine is hesitating from high mileage. Check to see if the mounts are loose or worn. If you need further assistance with your engine shaking, then seek out a professional, such as one from Your Mechanic, to help you.

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. Engine shakes intermittently after warmed up with car in "drive" at a stop. Single shakes at a time.

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: My 06 malibu had slow acceleration only in first gear i had a mechanic change the shift solenoids now in reversa and neutral it on

The transmission may have additional problems and should be scanned for additional codes first. If there are additional service codes then you will need to have those codes diagnosed. The vehicle should not move in neutral unless it is pushed....

Q: My car pulls to the side when I leave acceleration and when I'm braking. What could be the real problem?

For the vehicle to move to the right as you accelerate, that would be an engine and transmission mount that is either loose, damaged, or broken. For the vehicle to pull as you brake, there could be an issue with...

Q: How do I replace the high-mount brake light?

Your car has three brake lights – driver side, passenger side and the high-mount brake light, which is sometimes called a third brake light. While it’s not necessary to drive legally (unlike the other two brake lights), it does provide...

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 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.
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.