Walang Power sa Initial ng 2nd gear

**reym** · January 18th, 2010 09:50 AM

Hi Team,

The car is a chevrolet spark 1.0 EFI.

Na checked na fuel filter ok naman, na ayos na clutch cable dahil dati nabibigla kaya namamatay.

Ngayon pag 1st gear ayos naman, pag shift ng second gear parang hinihila pa ng konti pa atras kotse bago umarang kada. Pag press ng accelarator for a few seconds parang walang response.

Thanks a lot.

**jick.cejoco** · January 18th, 2010 11:12 AM

Originally Posted by reym

Hi Team,

The car is a chevrolet spark 1.0 EFI.

Na checked na fuel filter ok naman, na ayos na clutch cable dahil dati nabibigla kaya namamatay.

Ngayon pag 1st gear ayos naman, pag shift ng second gear parang hinihila pa ng konti pa atras kotse bago umarang kada. Pag press ng accelarator for a few seconds parang walang response.

Thanks a lot.

your concern is termed hesitation. with your engine size, of course it will take time to attain the right amount of torque before it can go. the questions are: do you get better response with a similar vehicle? is the malfunction indicator light on while driving?

**meledson** · January 18th, 2010 11:59 AM

what RPM ka mag shift up?

Kung sobrang baba ng PM, mag vibrate ang engine at mayroon hesitation. taasan pa ang shifting point.

**reym** · January 20th, 2010 03:12 PM

I have an owner jeep with a 3k engine (1.0) which I could shift from first to 2nd gear with rpm as low as 1000 and it doesn't hesitate. With the spark , I shift at 1,500 rpm with aircon off but a whole lot of hesitation.

**meledson** · January 20th, 2010 03:48 PM

Originally Posted by reym

I have an owner jeep with a 3k engine (1.0) which I could shift from first to 2nd gear with rpm as low as 1000 and it doesn't hesitate. With the spark , I shift at 1,500 rpm with aircon off but a whole lot of hesitation.

3k engine ay 1200 cc? If I am not mistaken 4 cyliners ang 3K. 3 cylinders ang spark.

kung mababa ang gearing, pupuwede na maaga mag shift. pero kung mataas, kailangan na mas mataas ang rpm bago mag shift up. may effect din kung low speed or hi speed ang differential.

pag nag shift ka at 2,000 rpm sa spark, ok naman? ang problem ay hindi kung ano ang rpm pag shift kundi ay kung ano ang rpm on the new gear. So kung may hesitation na ang makina at 1000 tapos nag shift up ka at 2,000. possible na mas mababa sa 1000 ang rpm.

very early shifting up ay masama sa makina. this is called lugging the engine.

Siyempre, depende din sa incline ng daan, type ng daan at kung konti o marami ang pasahero.

**oj88** · January 20th, 2010 06:13 PM

On my brother's Getz (1.1L), I have to shift around or above 2,500 RPM to get it to haul ass. Takes some getting used to, especially if you're used to driving more powerful cars.

**niky** · January 21st, 2010 10:44 AM

It all depends on gearing. 1.5k rpm is way too low for a modern car with long gearing. Especially with modern engines, which are tuned to run lean at part throttle at low rpms to save gasoline, compared to older carburetted engines, which literally hemmorhage gas by comparison (which is why EFI engines are so much more efficient in traffic).

**10323015** · January 22nd, 2010 11:15 PM

pakiramdaman mo din sir. pag sobrang nanginginig, then you shifted waayy too early. pag ayaw umakyat ng rpm kahit medyo nakatapak sa gas pedal, you shifted quite soon (or mabigat yung auto dahil may sakay, or nasa inclined road ka, or both)

might be on the way you shift lang, as what almost all who posted says.

on 1.6 liter engines, 2k rpm is good. on cars with smaller displacement, it may need a little more ohmp/vroom to go, especially if the gearing is long.

**aejhayl17** · January 22nd, 2010 11:25 PM

pwede din clutch sliding.... it happened to my ZZ few years ago, kahit 4k rpm na, mahina hatak whenever im shifting to higher gear, and also on engine breaking...hindi naghihingalo ang makina pero naghehesitate ang hatak. tumataas ang rpm pero di umaarangkada,. this is for all gears ah, hindi lang sa segunda. nashare lang po

but dahil sa 1.0L ang makina, malamang isang dahilan din yun kaya parang bitin.

**10323015** · January 23rd, 2010 07:33 AM

Originally Posted by aejhayl17

pwede din clutch sliding.... it happened to my ZZ few years ago, kahit 4k rpm na, mahina hatak whenever im shifting to higher gear, and also on engine breaking...hindi naghihingalo ang makina pero naghehesitate ang hatak. tumataas ang rpm pero di umaarangkada,. this is for all gears ah, hindi lang sa segunda. nashare lang po

but dahil sa 1.0L ang makina, malamang isang dahilan din yun kaya parang bitin.

sliding clutch disk is a possibility, from based from what the owner said, hmm, unlikely.

kung sliding disk, rpm should rise, but the speed stays the same or even goes down (on inclined roads)

you can test this yourself naman eh: bring the car to, say 15 kph. then shift to 3rd gear. then floor the gas pedal (or push a little deeper) if the rpm goes up without the corresponding speed increase, then, it's likely a slipping clutch disk na.

good luck!