Skip the auto shop - Our mechanics make house calls

Q: SUV jerks while driving, braking, and accelerating

asked by on

It seems like my car is always having problems, ever since buying it. A tune up was performed recently and some things fixed, but since then my SUV still jerks while driving. It jerks a little when I start driving and also as I’m driving and brake and accelerate - jerks all those times. I changed the transmission fluid - no help. Lately, I’ve noticed that when accelerating to 30 mph, it will go down to around 25 mph and then back to 30 mph by itself. The same scenario happens at 50 mph. Sometimes I smell a burning odor while driving, but it’s random. Sometimes it goes away. It seems like it’s outside. Also, when my gas gets low, the check engine light comes on. What will solve all these problems?

A: You may have an issue with your catalytic c...

You may have an issue with your catalytic converter not allowing the flow of exhaust that is necessary to maintain a good running engine. If you had a tune up done recently then your ignition system should be working properly. If your catalytic converter is clogged, this will force exhaust gases back into the engine and therefore will 'choke' the engine or prevent it from breathing properly.

I would recommend having your catalytic converter checked out by a certified mechanic to determine whether or not it is clogged. If the catalytic converter is clogged, I would recommend having it replaced, as it will likely resolve the jerking issues you are experiencing while driving. If you feel like you need help with this, get some assistance from a professional mechanic who can diagnose your cars jerking symptoms and make the necessary repairs afterwards.

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: Burning smell coming from rear of van

Hi there, it sounds like your pads are rubbing against the rotor creating excess heat. Normally the pads release slightly off of rotor when the brakes are released and the wheels start moving. If the issue is still happening after...

Q: I have replaced a failed alternator once a month for the last four months, any suggestions?

Your vehicle has a recall for the alternator cable shorting on the power steering line after the insulation gets rubbed through. The recall is for inspecting and replacing the alternator and alternator wiring. The recommendation I have is to contact...

Q: Jeep won't shift from second to third

The information provided for your Jeep Grand Cherokee is limited so it is difficult to point you in the right direction. However the symptoms lead me to believe that your vehicle may have put itself in “limp mode”, meaning that...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.