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Old 06-28-2015, 04:23 AM   #1
lahiruchandima
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Car jerks when stopped in traffic

Hi All,


I replaced the PCV valve of my Toyota Vitz 2007 some time back, due to oil level reducing. After I got the car back from the mechanic, it had this weird behavior of jerking after five or six seconds when car is stopped in traffic. Also, it jerked when shifted to drive gear from parking gear. About after a week or so, this got automatically fixed.
I repaired the car again from the same mechanic, this time a soldering job of an electrical cable which supplies power to one of the spark plugs. After I got the car back, it showed similar jerking behavior. Now its been three or four days and jerking has got resolved to some extent, but still car does not feel the same as it previously was.
I asked the mechanic whether he did anything else other than soldering the cables, but he said no. But, he should have disconnected the battery, because the time was incorrect when I got the car back.
What could be the reason for this jerking behavior?
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