Skip the auto shop - Our mechanics make house calls

Q: My vehicle is shaking when I drive past 50 mph

asked by on

so my car has recently been having problems it started with it not wanting to start one day i noticed while i was driving it, the engine shook for a few seconds. i then went to get my regular maintenance oil change since i was a month overdue. the next day i was driving to work and as i was entering the entrance ramp for the highway my engine started shaking again for a few seconds my check engine light flashed on and then back off again. i took it to my local auto zone to get a reading and no codes came up

My car has 180000 miles.
My car has an automatic transmission.

A: Hi there. From the description you have giv...

Hi there. From the description you have given, the drivability problem your vehicle has may be a fuel delivery problem. This would account for your vehicle not wanting to start that one day. Next day, you were entering the highway attempting to accelerate your vehicle shaking and the Check Engine Light flashing.

The Check Engine Light flashing was the ECM (electronic control module) recognizing engine misfires. I am surprised the ECM did not store a fault code P0300 (random cylinder misfires).

It could be start of a faulty fuel pump. It could be a restricted fuel filter. It could also be an ignition system (ie, ignition coil or spark plug) related problem. I recommend having your vehicle's intermittent drivability problem diagnosed by a certified technician, like one from YourMechanic.

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・Save up to 30%

Get a quote

What others are asking

Q: Car vibrates/shakes at 55 mph

Hello. It sounds like there is a bent rim on the SUV. The tire may slowly lose air if the the rim is bent because the tire is not able to seal properly. A bent rim may also cause the...

Q: Sluggishness and Breaks

Hello, there is a variety of causes for the vehicle feeling sluggish. If there is a Check Engine Light on the dashboard and the vehicle than diagnosis with a scan tool will be required. If no Check Engine Light...

Q: Rough idle and intermittent engine light on

Hello there, many faults can cause a rough idle and the Check Engine Light to be on with your 2007 Mazda 3. The first course of action would be to check what code is stored in the ECU. This code...

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...
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...
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...