Q: Jeep revving, hesitating, and jerking

asked by on

I have a Jeep Grand Cherokee Laredo with over 107,000 miles. A few weeks ago it revved up once when I shifted into drive. I thought maybe my foot had hit the gas pedal accidentally, so I thought nothing of it. About that same time it hesitated slightly when I yielded at a crossroad. So, last week, while driving on the interstate, it started slightly bumping forward. It repeatedly did this the entire way home and on the next day. Sometimes it would be fairly forceful, lurching or jerking forward, and acting like it was going to stall, but it doesn't. Of course, there are no warning or Check Engine lights, and it won't do it for the tech when it is in the shop. My guess is it's a transmission issue, but I can't check the transmission fluid because it is sealed.

The symptoms you describe on your Jeep Grand Cherokee lead me to believe that you may have a cam or crankshaft position sensor intermittently failing. If the computer does not know the location of the cam and crankshaft, then it is not able to tell the engine how to perform. This results in the symptoms that you have described with your Jeep. It is also possible for the cam and crankshaft position sensors to fail without displaying a Check Engine Light. To be 100% certain, it may be time to enlist the help of a certified mechanic to go over your vehicle with you. They will be able to perform an extensive test drive to duplicate your Jeeps concerns. They will take this information to assist in identifying exactly why your vehicle is hesitating and jerking. From there, they can assist in making the necessary repairs to get your Grand Cherokee operating smoothly again.

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. Jeep revving, hesitating, and jerking

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: Car wont start up again once its warm 2005 Jeep Grand Cherokee

Hello - the first thing to check is for problem codes, whether the Check Engine light is on or not. Checking for spark during one of these "warm, won't start" conditions in the next step. Your symptoms are likely a...

Q: Lose power in eceleration or RPM gage don't go into gear smoothly

Hello. A loss of power can be caused by many things. If you have a Check Engine Light and code for an oxygen sensor then I would start there. A faulty oxygen sensor on either bank can cause all sorts...

Q: Failed to downshift to lower gear

Greetings. The humming noise is likely caused by a faulty PCV valve or oil trap hose. The engine of the vehicle produces a lot of suction and the PCV valve and hose is made to regulate some of the suction...

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 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...