Car started 'jerking' when pushing accelerator. Can't tell if it's coming from transmission or traction control. Trac control light came on, then temperature gauge dropped from warm to cold, then service engine soon light came on.
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When you say it "jerks," this description could fit several actual symptoms. If by "jerks" you mean the engine misfires, it could be caused by the need for a major tune-up (including plug wires and distributor cap), or it could be a problem with fuel delivery, contaminated fuel, or defective components in the fuel system.
I assume the CHECK ENGINE light is on (and has probably been illuminated for some time now). Begin by doing a readout of the stored codes, and use the results to begin your diagnosis.
If by "jerks" you mean the transmission is slipping (engine revs but car slows down or doesn't accelerate), you have a transmission issue. If the transmission fluid and strainer/filter have not been replaced within the past 5 years or 50,000 miles, have a complete transmission service performed.
If by "jerks" you mean that the steering wheel wobbles or pulls, you have a problem with the front suspension.
If by "jerks" you mean that the car shudders or pulls when you apply the brakes, you need brake work.
I think I covered all of the "jerks." ;)
we cant drive car, so jerking is not clear to a non driver.
first off , ill guess there is no odd noises.
and that means jerking can be 2 things (sure more but)
engine jerks, does it only?
or transmission slips then stops slipping resulting in a jerk.
get it serviced, with persons that can drive and experience this live.
Depending on how it jerks, (your question is pretty vague) could be fuel filter starting to clog up or running out of fuel, tires are out of alignment, (if jerking side to side), clutch might be worn if a manual transmission.
Determine whether the jerking is engine or transmission related. One way to determine if it is the transmission lock up converter is acting erratically is to down shift out of OD. And see if jerking persist. If it goes away suspect transmission to have problems with torque converter or TCC solenoid . If it doesn't go away determine whether or not the engine sounds to be misfiring. If so vehicle may require a tune up. Many vehicles can be diagnosed for free at your local Auto Zone.
Your idea of a clutch problem is correct. you will need to replace the clutch,pressure plate, throw out bearing and have the flywheel turned or replaced on car. Sorry to tell you this but it will have to be done to correct your problem. shop around to find a good quality clutch repair kit with all the parts that you will need. and remember in shopping that all companys have different warrantys on there products. hope this will help you.