Jerk Problem Seeking For Solutions

[weitak_83]

EE100 w 20V SVT

a lot of troubleshootings hv be executed but unable to overcome

always & sudden jerk or 'tarik' (once) on smooth & slow drive & disaccelerate

sometime also when fast drive & accelerate

quite frequent jerk on smooth & slow drive & disaccelerate comparing fast drive & accelerate

HELP!!!

Master or who faced this problem previously, pls recommed me d solutions.

Thanks

 

[keithkeat]

did u remove this item thermostat?

 

[weitak_83]

not sure

where is it?

how 2 check?

if removed then jerk?

 

[keithkeat]

ehhhh......i'm not sure....
inside meter, if u accelerate for some long distance, did the temp meter drop a lot......

 

[wilm3]

is it due to air cond kick in? jerk when air cond on or off? can u descript more... might be help.

 

[7Heaven]

yea if air cond on then only got jerk, it might be the air cond vacuum sensor....

 

[weitak_83]

when travel for long distance d temo meter do drop a lot

my mechanic told me that's bcoz my car is still using stock auto transmission fan

is that true?

 

[weitak_83]

is it due to air cond kick in? jerk when air cond on or off? can u descript more... might be help.

jerk regardless air con on o off?

however, not sure while on more frequent o off more frequent

hv 2 test 2 confirm

 

[weitak_83]

yea if air cond on then only got jerk, it might be the air cond vacuum sensor....

how 2 check n rectify?

 

[chinozie]

The jerking...
a lot of possibilities...

1) check your AFM...try to swap it and see how...
2) might also due to misfire ...

 

[7Heaven]

try to on off ur air cond lo, if jerking when off, then that might be the problem lo...

 

[weitak_83]

i think tat jerk may bcoz of im still using d auto ecu while my transmission is manual now.

m i rite?

 

[weitak_83]

The jerking...
a lot of possibilities...

1) check your AFM...try to swap it and see how...
2) might also due to misfire ...

wat do u mean by swap it?

how 2 solve misfire?

 

[weitak_83]

try to on off ur air cond lo, if jerking when off, then that might be the problem lo...

jerk when on = aircon vacuum sensor

jerk when off = ?

 

[7Heaven]

then might be other problem oledi lo.... u can try to check like bro shin said....

 

[chinozie]

wat do u mean by swap it?

how 2 solve misfire?

my previous SVT...timing not so good, acceleration damn lumpy...sometimes jerk...sometimes engine dies out of sudden...change the AFM...wallaaa...a OK...

misfire is a lot of thing need to check...
- firing system not so good (spark plug, cable plug, distributor component n so on), fuel delivery system got choked or not so good, normally fuel filter choked and ignition timing long way out

 

[weitak_83]

really a lot 2 checks
i almost surrender
what 2 do?
how?
any1 2 help out?
can TT Cheras on 1st Sept help?

 

[7Heaven]

hmmm... i think sure got many sifu on that day, u can bring ur ride there and let those sifu check for u lo, if still cant, then bring to workshop lo hehehe....

 

[chinozie]

yup...that might help...
don't ferget to post back the solutions...

cheers

 

[keithkeat]

really a lot 2 checks
i almost surrender
what 2 do?
how?
any1 2 help out?
can TT Cheras on 1st Sept help?

u from cheras???
actually every fri&sat we do meet up at cheras conought......lol

even tonight we do the same......i'm sure u know where is this area........
lol