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hi, have a problem today. hope you guys know what it is. kia forte 1.6sx of 5 years and 4 months old, 77Kkm mileage. Today the car jerks at idle at red light, and i can see that RPM slight jumps up and down, like 400rpm - 700rpm. Usually it is idle at 400rpm without up and down. The jerk is about every 4 seconds, not constant jerking. can feel the car tremble. When i press the throttle to accelerate during travelling, the car will jerk again, and does not accelerate instantly as normal. after a while it accelerates to a higher cruising speed, then it's OK again. During jerking, the engine light flashes like 10 times. when the jerk stops, engine light becomes off again. I just changed engine oil and engine filter 2 months ago. Is this worn spark plugs, or ATF due to change (coz it's been a while), or both, or something else? Thanks.

Theres a 'Gong-gong' sound when pressing my brakes. back and font... I noticed a few days ago only... Hmm my car is quite new 6 mths and 10k only?(all stock) wat do you think is wrong?

Warning: Doing this will cause your car to behave in unbelievable manner or even take off! Did anyone tried on auto car with both gas and brake pedal?

yesterday went drinking with friends so i took a cab to meet them instead of driving. got a wish cab and the thing is, the cab driver keeps pressing and letting off the gas.. i realised he pressed the gas whenever the RPm hits 2.5 and let the gas off when it hits 3. I felt like riding on a boat on a wavy ocean, seriously i though my stomach was protesting... wanted to throw out. y did he do that? save petrol? can save mei?

I came across quite a number of car forums that actually discussed shifting/engaging gears with pressing the clutch! http://forums.nasioc.com/forums/showthread.php?t=555076 http://www.superhonda.com/forum/archive/in...p/t-110759.html http://www.f-body.com/forum/showthread.php?t=1913 http://www.yotor.org/wiki/en/ma/Manual%20t...20technique.htm These posts seem to suggest that shifting/engaging gears without pressing the clutch can be done...and if done right, cause no wear and tear on the gear box. If done wrong, you'd probably hear a grinding sound, which means that your gear box (tranny and synchro) is taking a beating). What I want to know is this (which is the reason why I went in search for this topic anyway) - the abovementioned threads talk about clutchless gear shifting while the car is in motion. In my case, I had accidentally engaged the gear without pressing the clutch when my car was stationary (in fact, the engine was switched off). Will this be detrimental to the gearbox? I ask this because I didn't even know I had accidentally engage the gear as there wasn't any grinding sound at all. I only realized I had engaged the gear when I turned on the ignition and the car jerked forward and stalled. Any expert opinion on this will be GREATLY appreciated.