Skip the auto shop - Our mechanics make house calls

Q: A possible misfire but don't know for sure - 2007 Chevrolet Cobalt

asked by on

When I'm driving the car it drives fine idles fine but when I give it some throttle the car jerks hard just once and won't do it again until the next day. It seems to only do it when the motor is cool. It never happens when idle or after I've been driving for some time only a few minutes after start up in the morning. Could the be a misfire or something else? Another question is it dangerous to the life of my car?

My car has 124000 miles.
My car has a manual transmission.

A: Hi and thanks for contacting YourMechanic. ...

Hi and thanks for contacting YourMechanic. This problem seems to be with the transmission and not the engine. When driving the vehicle around all day, the transmission gets all of the fluid to all the clutches inside and operates them normally. When trying to perform a hard acceleration with the engine cold, not only it is hard on the engine, but it is hard on the transmission.

The transmission fluid may have air in it after starting the vehicle and causes the transmission to shutter a little when demanding heavy throttle. I recommend starting the vehicle and not driving it around until the engine has some time to warm up. If you have not performed a transmission oil flush and filter change, I recommend changing the transmission oil and filter. If you need assistance in changing the oil or checking out your transmission, then seek out a professional to diagnose the jerking problem so that this can be addressed appropriately.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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 went to get an oil change, and the mechanic noticed a leak in my transmission. This was on Saturday. They put more fluid in it.

There could be a leak on the input shaft, output shaft, oil pan, dipstick grommet, or the seal on the shifter linkage could be leaking. I recommend seeking out a professional, such as one from Your Mechanic, to help you...

Q: Intermittent failure to respond to throttle

Hello - wow, an older classic! Your 300TE utilizes Bosch Continuous Injection System (CIS) which varies fuel pressure more dynamically than more contemporary injection systems. I would suspect fuel pressure is the problem, both for the inability of the engine...

Q: dead battery plus jerking

Hi there. If the alternator is not charging the battery and not providing enough voltage into the system then you will get this jerking. If there is not enough power in the system, then the computer will have trouble shifting...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...