My car is like jerking some of the time there are no service lights and it is serviced regularly

I suggest you have a transmission specialist look at it. The jerk could be the transmission 'slipping'. A wrench light usually means a service is needed. The specialist will be able to service the transmission and find any other issues.

I would need to drive this to try and diagnose it.

There are a few possible reasons why your 2002 Mitsubishi Montero Sport might not go right after shifting into drive or when at a stop won't take right back off and jerks really hard when it does. Transmission problems: The transmission is responsible for transferring power from the engine to the wheels. If the transmission is faulty, it can cause a variety of problems, including difficulty shifting gears, jerking, and stalling. Clutch problems: The clutch is responsible for engaging and disengaging the transmission from the engine. If the clutch is faulty, it can cause a variety of problems, including difficulty shifting gears, jerking, and stalling. Engine problems: The engine is responsible for providing power to the transmission. If the engine is faulty, it can cause a variety of problems, including difficulty shifting gears, jerking, and stalling. Electrical problems: The electrical system is responsible for powering the various components of the vehicle, including the transmission. If the electrical system is faulty, it can cause a variety of problems, including difficulty shifting gears, jerking, and stalling. If you are experiencing these symptoms, it is important to have your vehicle diagnosed by a qualified mechanic to determine the root cause of the problem. Once the cause of the problem has been identified, the mechanic can recommend the necessary repairs. Here are some tips to help prevent these problems from happening in the future: Have your transmission serviced regularly: The transmission fluid should be changed according to the manufacturer's recommendations. Have your clutch serviced regularly: The clutch should be inspected and adjusted according to the manufacturer's recommendations. Have your engine serviced regularly: The oil and filter should be changed according to the manufacturer's recommendations. Have your electrical system checked regularly: The electrical system should be inspected for any signs of wear or damage. By following these tips, you can help to prevent transmission, clutch, engine, and electrical problems from happening in the future.

Check your transmission fluid. Usually if your rig starts shifting hard ( big Jerking motion) it's a sign that your transmission is terminal and the ring is going between the gears

number 4 misfire check either plug or coil --as to jerking if vehicle is not running correct [misfire ]it will not drive smooth trac light --it can be related to the misfire or check abs and brakes and power braking will set off traction control and puts a strain on brakes and c/v axles

If it has been regularly serviced and tuned up It sounds that it could be a TPS...( Throttle Position Sensor )...or perhaps an 02 sensor...Oxygen sensor...Idle Air Control valve will keep the idle up until vehicle gets warm then it brings the idle down..there are a few things that could cause this....However If any of these are at fault they should flash a trouble code...I have seen times when no code flashed ...Your type vehicle is special....I would check for recalls......In fact don't waste time trying to repair it without trouble codes...Take it to a dealer.

thinc ur alternator is bad too--its not chargn properly--too low voltage--havit load tested--the test they giv for free in part store doesnt doit---------jerking from the inadequate spark

I guess you don't know about Check Engine Lights
They have been on all vehicles for over 30 years
Take car to a repair shop
They will check for codes & tell you the fault present,
when check light came on.

make sure the spark plug wires are all on if they are all on pull the off and look for black lines called carbon tracking from a cracked plug or bad wire just serviced doesn't mean anything if the service light stays on get it scanned and the code can tell you what cylinder is misfiring

Yes, it most likely will be a costly proposition if you take it to the dealer. It's difficult to diagnose a problem with most vehicles in this situation due to the many possibilities. The FIRST thing you could do is to find out what the engine control unit (ECU or Engine computer) is detecting as a problem. This is usually a free service that is performed by local auto parts companies like Autozone etc. Try that first to see what component is failing then you can move on from there.