What causes "mahina ang hatak"?

[randyV]

Hello po. I have a problem with my car's accelaration. Ang hina ng hatak. My car is a Nissan 4-speed A/T ECCS 1.6L engine. Had its oil changed recently but still mahina pa rin ang hatak . Nalinis na rin ang air filter at spark plugs nito. Medyo nakakatakot lang magovertake baka mabitin. I have to shift from D to 2 para lang makahatak pero parang kulang pa rin. Ano po kaya ang puwedeng gawin para lumakas ang hatak nito? Xtra unleaded po ang gas ng car ko.

Salamat.

[vinj]

Go with a tune-up first by changing your spark plugs (Are you using the correct plugs?) and adjusting your timing and check/change your fuel filters. if it persists, have other items like the MAF sensor checked/cleaned (make sure the mechanic is knowledgeable on this). Do you get any erratic idling? Does the car have a hard time revving to high RPMS (this is symptom of a miscalibrated or busted MAF sensor)?

When was the last time the ATF was changed?

[chris_d]

I dont see any problem, just floor the gas when overtaking.

[randyV]

Go with a tune-up first by changing your spark plugs (Are you using the correct plugs?) and adjusting your timing and check/change your fuel filters. if it persists, have other items like the MAF sensor checked/cleaned (make sure the mechanic is knowledgeable on this). Do you get any erratic idling?

When was the last time the ATF was changed?

I haven't had my ATF changed from the time I bought the car (6 months ago) though I checked it and its within the optimum level. Color is reddish and clear. Idling is at 1,100 rpm when the engine is cold but goes down to 800 rpm when hot.

I'm not sure if I'm using the correct plugs but a mechanic said that the plugs are ok when he cleaned it. Air filter was also cleaned. Maybe I should have the fuel filter checked, adjustment of timing then the MAF sensor checked/cleaned.

Thanks Bro!!

[babyjoaqui]

same thing happened to my nissan cefiro last week...check mo ung exhaust system bka barado...ung sa akin sobrang dumi ng catalytic converter d tuloy makalabas ung hangin.

[speedyfix]

check the timing and clean the maf... that should help.

[vinj]

Usual plugs for the GA16 engine is NGK BKR6E.

On the MAF sensor, it's sensor right after the airbox. it's sensitive and should not be touched nor adjusted. it can be cleaned with electric contact cleaner. Try dropping by a Nissan CASA and have them do a CONSULT readout on the engine to see if everything is running up to spec... a shop like Speedyfix or Autotechnika can also do an engine scan.

[randyV]

Usual plugs for the GA16 engine is NGK BKR6E.

On the MAF sensor, it's sensor right after the airbox. it's sensitive and should not be touched nor adjusted. it can be cleaned with electric contact cleaner. Try dropping by a Nissan CASA and have them do a CONSULT readout on the engine to see if everything is running up to spec... a shop like Speedyfix or Autotechnika can also do an engine scan.

How much po kaya magpa CONSULT check sa CASA? May shops po ba ang Speddyfix at Autotechnika near Diliman?

Salamat.

[speedyfix]

nope, sa shaw lang kami.

[MasterZerg]

just a noob question... when you say check timing.. what does it mean thanks...

[andre]

Depende yan sa AT transmission ng Maufacturer. All 2nd Gen CRV AT has that problem. All of my friends who owns one are complaining, including myself. There's a lag when flooring the accelerator.

[MasterZerg]

anong mga usual cause when it comes to check the timing?

[speedyfix]

on older cars with distributors you check the timing on a regular basis. pero kung di naman ginalaw yung distributor ok lang to not touch it.

on newer cars with wasted spark and or coil on plug ignition systems it is the computer that controls the timing and it cannot in most cases be adjusted by the user.

[yudyin]

great info guys! parang parehas din kasi kami ng problem sa a32 cefiro. kinakapos sa power tapos pag namatayan ng makina ang hirap istart, e bagong palit lang yung spark plugs. baka minsan mapadaan ako kila sir speedy sabay na din sa royal purple! XD sinusubukan ko ngang i floor yung revolution pero hanggang 4 lang yung abot e... haaay

[v6dreamer]

Go with a tune-up first by changing your spark plugs (Are you using the correct plugs?) and adjusting your timing and check/change your fuel filters. if it persists, have other items like the MAF sensor checked/cleaned (make sure the mechanic is knowledgeable on this). Do you get any erratic idling? Does the car have a hard time revving to high RPMS (this is symptom of a miscalibrated or busted MAF sensor)?

When was the last time the ATF was changed?

Plus 1 ito!

Check your tranny fluid. Flush mo na ang tranny fluid pati narin yong filter ay papalitan mo narin dahil barado na yan. Did you know that Transmission is one of the most neglected parts of the car? Most owner are concentrated only on the engine maintenance, but not on the tranny.

As you stated maganda naman ang andar ng kotse mo at pinaayos mo pa, so go other way around.....you dont have nothing to loose.


* Yudyin.......great info guys! parang parehas din kasi kami ng problem sa a32 cefiro. kinakapos sa power tapos pag namatayan ng makina ang hirap istart, e bagong palit lang yung [COLOR=blue! important][COLOR=blue! important]spark [COLOR=blue! important]plugs[/color][/color][/color]. baka minsan mapadaan ako kila sir speedy sabay na din sa royal purple! XD sinusubukan ko ngang i floor yung revolution pero hanggang 4 lang yung abot e... haaay

Check your fuel filter baka clogged lang yan at kinakapos ng gas kaya namamatayan ng makina. Start uli yan kapag bumaba na ang mga dumi na nakabara sa outlet ng fuel filter mo at babara ulit kapag takbo na naman ang gas papunta sa makina. Pa check mo rin ang fuel pump at presuure regulator baka nagloloko na. Kapag malamig ang fuel pump aandar pero kapag uminit na nagloloko parang kapos ang takbo at namamatay at hirap naring aandar hanggang lalamig na naman ang pump.

[eyshmechanic]

Hello po. I have a problem with my car's accelaration. Ang hina ng hatak. My car is a Nissan 4-speed A/T ECCS 1.6L engine. Had its oil changed recently but still mahina pa rin ang hatak . Nalinis na rin ang air filter at spark plugs nito. Medyo nakakatakot lang magovertake baka mabitin. I have to shift from D to 2 para lang makahatak pero parang kulang pa rin. Ano po kaya ang puwedeng gawin para lumakas ang hatak nito? Xtra unleaded po ang gas ng car ko.

Salamat.

i think based on your accounts walang problem sa makina ang posible problem is yung torque converter.

[speedyfix]

have the tranny flushed. it might improve the hatak lalo na if the old fluid is burned na.

[yudyin]

thnaks for the info guys! :P papacheck ko nga siguro yung fuel filter

[smirky20]

isa sa mga important sensor na pinagkukunan ng reference signal ng computer ay ang MAF sensor. MAF sensor ang sumusukat sa volume ng air then the signal it produce will be the reference signal ng computer for air and fuel mixture. pag sira or marumi ang MAF sensor walang power ang engine.

sa automatic transmission naman ang VSS and TP sensor naman ang pinagkukunan ng reference signal ng ECU para sa shifting nya. pag sira yung either sa dalawa, ma eexperience mo yung poor shifting ng gear, minsan delayed minsan naman advance.

mas maganda na pa check mo na yung PCM/ECU kung may present na DTC (Diagnostic Trouble Code). hindi lang consult ang pwede sa mga nissan pwede rin yung ibang scan tool tulad ng carman scan vg, ang disadvantage lang ng carman compare sa consult is hindi nakakapagprogram ng ECU, BCM, and Immobilizer pero pwede naman sa kahit anong sasakyan Asian and American.

[Jan2X]

Usual plugs for the GA16 engine is NGK BKR6E.

On the MAF sensor, it's sensor right after the airbox. it's sensitive and should not be touched nor adjusted. it can be cleaned with electric contact cleaner. Try dropping by a Nissan CASA and have them do a CONSULT readout on the engine to see if everything is running up to spec... a shop like Speedyfix or Autotechnika can also do an engine scan.

sir speedy, magkano po ba kaya ang engine scan? corolla Gli A/T po.
Thanks!