leeys 1st Gear September 28, 2016 Share September 28, 2016 Hi bros,need some advice on my car jerking issue,my car is a 9 year old toyota corolla fielder with 34k mileagePreviously it has jerking issue during acceleration(only jerks between 2000-2500rpm),after I went to a workshop and changed the fuel pump/fuel filter/fuel regulator/gas pedal sensor,the issue was solvedHowever,these 2 days,I started ferrying my friends,one of them is 160kg and the other is around 85kg.When I accelerate on slopes or to overtake,the car will jerk(between 2000-2500rpm again)and lose power until I release the gas pedal,and accelerate againWhen my 160kg friend got off the car,the car has no issues and got the power again,I would like to ask if heavy weight could cause the jerking issue?thanks bros ↡ Advertisement Link to post Share on other sites More sharing options...
Neost 6th Gear September 28, 2016 Share September 28, 2016 Check your ignition cables. Sounds like misfire piston Link to post Share on other sites More sharing options...
Fitvip Supersonic September 28, 2016 Share September 28, 2016 Check your spark plugs and ignition coils! Link to post Share on other sites More sharing options...
Hamburger Hypersonic September 28, 2016 Share September 28, 2016 And has very little to do with heavy friends. Coil pack and SP is about to kong out anyway. Link to post Share on other sites More sharing options...
Little_prince Supersonic September 28, 2016 Share September 28, 2016 Wow. 9yr old only 34k mileage??? Link to post Share on other sites More sharing options...
leeys 1st Gear September 28, 2016 Author Share September 28, 2016 sorry forgotten to mention that i already changed spark plugs and did ATF flush also Check your ignition cables. Sounds like misfire pistonSorry car noob here,is ignition coil and ignition cable the same thing? And has very little to do with heavy friends. Coil pack and SP is about to kong out anyway. spark plugs changed last month,but ignition coils has never been changed beforeWow. 9yr old only 34k mileage???yup,its a opc car,mostly only drive on weekends Link to post Share on other sites More sharing options...
Kb27 Supersonic September 28, 2016 Share September 28, 2016 Sorry car noob here,is ignition coil and ignition cable the same thing? If yours is the standard ignition, (not coil-on-plug), then you have ignition coils, which is connected by spark plug cables ( usually about 1 ft long), then the spark plugs. Ignition coils and spark plug cables can wear out, causing misfire. Link to post Share on other sites More sharing options...
Pocus Turbocharged September 28, 2016 Share September 28, 2016 (edited) If the coils are ok have your gearbox checked, maybe one of the gear speed has issues and slipping. Take note when this issue happen which gear are you in (butt feel as there's no indication in the dashboard) Switch from D to L and see if it happens. Check your ATF levels too to make sure not leaking.. Edited September 28, 2016 by Pocus Link to post Share on other sites More sharing options...
leeys 1st Gear September 28, 2016 Author Share September 28, 2016 (edited) If yours is the standard ignition, (not coil-on-plug), then you have ignition coils, which is connected by spark plug cables ( usually about 1 ft long), then the spark plugs. Ignition coils and spark plug cables can wear out, causing misfire. Yup will get them checked at the workshop this weekend If the coils are ok have your gearbox checked, maybe one of the gear speed has issues and slipping. Take note when this issue happen which gear are you in (butt feel as there's no indication in the dashboard) Switch from D to L and see if it happens. Check your ATF levels too to make sure not leaking.. Hopefully not gearbox issue,gearbox overhaul is 2k+,it always happen in D and around 2000-3000 rpm,Ok will try this matter later Edited September 28, 2016 by leeys Link to post Share on other sites More sharing options...
Trex101 3rd Gear September 29, 2016 Share September 29, 2016 Hi bros,need some advice on my car jerking issue,my car is a 9 year old toyota corolla fielder with 34k mileage Previously it has jerking issue during acceleration(only jerks between 2000-2500rpm),after I went to a workshop and changed the fuel pump/fuel filter/fuel regulator/gas pedal sensor,the issue was solved However,these 2 days,I started ferrying my friends,one of them is 160kg and the other is around 85kg.When I accelerate on slopes or to overtake,the car will jerk(between 2000-2500rpm again)and lose power until I release the gas pedal,and accelerate again When my 160kg friend got off the car,the car has no issues and got the power again,I would like to ask if heavy weight could cause the jerking issue? thanks bros Sound like stale fuel or fuel filter, you can try pump in new petrol and try drive your heavy friend around and see if it happen again. maybe a bottle of injector cleaner too to clean the injector up. Link to post Share on other sites More sharing options...
leeys 1st Gear September 29, 2016 Author Share September 29, 2016 (edited) Sound like stale fuel or fuel filter, you can try pump in new petrol and try drive your heavy friend around and see if it happen again. maybe a bottle of injector cleaner too to clean the injector up.just changed fuel pump/filter/regulator last friday and pumped full tank on monday i have never cleaned the fuel injector before,i will try it this weekend Edited September 29, 2016 by leeys Link to post Share on other sites More sharing options...
Unfair 3rd Gear September 29, 2016 Share September 29, 2016 If you have changed so many of the ignition/fuel components, i suspect its the clutch slipping in the CVT gearbox. Link to post Share on other sites More sharing options...
Buadongdong Twincharged September 29, 2016 Share September 29, 2016 TS, how come a 34k km mileage car can have so many problems? Doesn't add up leh. Even though it is 9yrs old but the parts should be pretty new and not much wear and tear should be expected mah.. You sure your friend didn't reset/tamper with the Odo? 1 Link to post Share on other sites More sharing options...
leeys 1st Gear September 29, 2016 Author Share September 29, 2016 (edited) If you have changed so many of the ignition/fuel components, i suspect its the clutch slipping in the CVT gearbox.i am going to check ignition coil and the fuel injector,some bros here think it could be misfiringTS, how come a 34k km mileage car can have so many problems? Doesn't add up leh. Even though it is 9yrs old but the parts should be pretty new and not much wear and tear should be expected mah.. You sure your friend didn't reset/tamper with the Odo?Yup I am sure he didnt tamper the odo He only drives every weekend and goes to malaysia once/twice every year Apparently,i checked on the internet and with some mechanics,cars that is parked for a long time and seldom drive,gets alot of problems Edited September 29, 2016 by leeys Link to post Share on other sites More sharing options...
Celicar Turbocharged September 29, 2016 Share September 29, 2016 yup,its a opc car,mostly only drive on weekends Check mileage. Link to post Share on other sites More sharing options...
Neost 6th Gear September 30, 2016 Share September 30, 2016 TS, how come a 34k km mileage car can have so many problems? Doesn't add up leh. Even though it is 9yrs old but the parts should be pretty new and not much wear and tear should be expected mah.. You sure your friend didn't reset/tamper with the Odo? under usage is also a problem. Got 1 stage my car travels less than 5km a day. The car battery went karpu 2 times in 4 months. Not enough time to charge up. Hence, got to go joyride on weekend. Link to post Share on other sites More sharing options...
karenkay Neutral Newbie October 21, 2016 Share October 21, 2016 Hi bros,need some advice on my car jerking issue,my car is a 9 year old toyota corolla fielder with 34k mileage Previously it has jerking issue during acceleration(only jerks between 2000-2500rpm),after I went to a workshop and changed the fuel pump/fuel filter/fuel regulator/gas pedal sensor,the issue was solved However,these 2 days,I started ferrying my friends,one of them is 160kg and the other is around 85kg.When I accelerate on slopes or to overtake,the car will jerk(between 2000-2500rpm again)and lose power until I release the gas pedal,and accelerate again When my 160kg friend got off the car,the car has no issues and got the power again,I would like to ask if heavy weight could cause the jerking issue? thanks bros I am currently driving a toyota vios and have similar issue as well, i don't think is due to your friend or the weight. I have jerking issue during acceleration and vibration when at stationary position for multiple times. So i decided to send my car to agent for a check and realized is sensor issue. I guess is better to send your car for a check if same issue happens again. 1 Link to post Share on other sites More sharing options...
SGCMmaomao 6th Gear October 21, 2016 Share October 21, 2016 I ever have this issue b4, end up is engine mounting.. u check it out lo.. but ur mileage very very low though ↡ Advertisement 1 Link to post Share on other sites More sharing options...
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