hi ..

.my .old myvi suddenly engine off during drive....shift gear to N..car can start and drive ..
after start car can drive as normal...


cleaned throttle body ...changed recon throttle body switch sensor idle valve ..still no help...

use computer check ..no error code display.


pls help wat else parts problem ?


thanks ...

Could be fuel filter is clogged or dirty….happened to my old Kancil many years ago…after changing that filter, no more sudden death on the road

MAPS SENSOR GONNA KONG ?

kepala ignition kot..dah check cable2 dia?

may ask the workshop to check ..

what is map sensor?


u meant the key start hole?


thanks....

Bro, you need mechanic to troubleshoot as your knowledge not enough to receive advice from otai2 above.

yes ..will send to workshop for checking ..
just open here see any one facing the same problem b4 or not so can have some clue....

thanks...

The sensor beside air fillter..mine got problem the car die while idle..some times when auto to 2 gear the gearbox jerk...

isn't called map sensor?

thanks ..

isn't called map sensor?

thanks ..


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Yes...try plug in more tight for more secure reading to the ecu..
Ah yes forget to tell u...try see any leak from the black hose. Any vaccum leak also will make the ecu wrong reading with other sensor...mine i change to silicone..old car with high heat inside engine no good for rubber hose...mine 16 year many have crack ..1st encounter was the hose..then aircond sensor tube broke(rm95)cannot glue back need to replace..the silicone hose cheap only rm3 per feet you only need max 12feet to replace all the hose.try repair the hose 1st

fuel pump pressure low

Yup send for mechanic to check better

MAF sensor fault normally wont coz engine to stall, it will coz fuel ratio error.

With nowdays car with more sensor better send to workshop had them use odb2 computer check for u better

If no error code, u cant check anything.

if some hose crack ..the engine off may happened frequently?mine drive 2.~ 3days no problem ..but it can happen in any time ...

which part caused fuel pump pressure low?


already checked with odb2 computer check ..but no error code show..


ya ...now car let the 4man drive to see the problem for few days ...hope during 4man drive engine off happened.
so they can know more details ...


thanks ...

The fuel pump is weak maybe. Usual symptom is the car takes a longer time to crank and start. There are also possibilities the fuel filter is clogged.

no ..every time start ..very smooth ...
if engine off in driving ..gear shift to N ..start again then can move ..crank n start as normal ..no take longer time..

thanks ..

update ..last saturday ..,4man changed the O2 sensor ..4man drive saturday ..sunday ..monday ..
car running without suddenly engine off ..

just bring back the car today ..and will monitoring ...

thanks ..


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bad o2 sensor or even removing it will only cause the CEL to light up (this will give error code), it won't cause engine to stall
since u mentioned no code before, doubt it's the culprit
what's the symptom before the engine stalls?

Is the batt healthy and has water to drink if necessary? Are the batt contacts clean and free from white deposits?
Because Maivee has this V sense on batt, if batt disconnect more than 10 sec it auto dies off.

no symptom ...if die ..just die like that ..like turn off key ..

bat condition in good as check by 4man..

thanks ...

dash, radio & ac all gone? or just engine only?

dash ..all logo icon lights up ..just like turn key to 1step b4
crank to start ..

radio ..ac ..no noticed off if remember correct...

thanks ..

bad ignition switch?
since no error logged and car restarts fine

not sure...but after changed o2 sensor ..engine off suddenly not happen yet...

thanks ...

Had the same issue. The culprit was bad alternator. My mechanic got it refurbish. No issue until now.

can describe a bit how the problem happening?


thanks...

Seem like u found the reason. Try driving that car for a long trip to verify.

ya ..ya ..the 4man drive long distance..he told no suddenly engine off ...

after many days drive ..still doing good ..
still monitoring ..


thanks ...

Done. Seremban - Kuala Kangsar. No more issue.

Fuel pump, happened to me, few times, b4 it totally kong

Should give her a car wash as present

i meant ..b4 changed ..car hard to start ? drive got sound ,
.....or just engine off tiba2 in driving?
then easy to star again the car ?

fuel pump , so car easy to start every time ?
engine stop while in driving? then easy to start back engine.?

thanks ...

First thing you need to do is change pomen. O2 sensor is the last thing to check for engine suddenly dying. Worst case for O2 sensor issue is high FC.

Did the pomen even check the fuel pump? Or the fuel injector clogged?

If alternator issue, it can easily be checked with multimeter.

However, if the issue really resolved...then I need to learn more.

FC like usual..not really monitor it ..
4man no tell me they check or no check for..fuel pump ..fuel injector clogged...

battery and alternator they checked ...no problem ..

do u think O2 sensor wont caused car engine suddenly dying?

till today still good...

actually the O2 sensor was faulty with engine logo light up ..4man asked to try see engine off happened or not ..if wont happened then will change new O2 sensor ...

thanks ....

update...

after few days...today happened ...car no engine off but dash board got few icon light up ...but not sure which one ..press oil pedal..car can moving ..the dash board light turn off ....

U already change the spark plug and plug/coil cables?

not yet change by 4man...

Suggest this as final resolve.

how much for the plug and plug cable?

4man changed the 2nd hand o2 sensor ..want to confirm then only change new..
4man dont wantt simply change but problem remain ..

if want the best value for money, can try outsourcing it yourself at part store. a myvi, many shop sell the parts.

yes ..parts is cheap if buy own self ...but 4man not happy for just installation only ..

mine also got this issue, after self-check connector to the battery loose. battery terminal thinning don't know why. Tighten it by adding piece of plastic. temp fix only, now seems ok.

not sure what is your foreman, but my nearby workshop is ok if I bring all my parts.

already check the battery terminal ...very tight ..should be not this problem....

u know the 4man very well? haha...

thanks ...

just known the shop since years ago even I just drop the car off for service and pickup back when it is done.

great 4man...but cost for change parts how they calculated ?

my myvi also having high fc and engine reduced power,can it be the o2 sensor but no cel

This post has been edited by Theeban: May 10 2023, 11:52 AM

believe can go to workshop that get ECU Reader, can check which error, or need engine tuning

car sent in workshop again for 4man check and drive ..

Did the pomen scan with ODB2 then KNOW that the O2 sensor is faulty or he just say O2 sensor when the light is up?

Granted, old MYVI does have O2 sensor issue but it is not always the car especially when engine die all of a sudden.

I think you need to send the car to another workshop for second opinion.

my O2 sensor with no problem , scan odb2 with no error code..
so 4man try change O2 sensor with engine icon light up and test see car still engine off when indriving or not.
4man don't want simply changed parts that not the culprit.

since they diagnose so long and without ask for money ..so will let them slowly check ...


thanks ...

Possibly alternator/battery

easy to check

4man already checked ...still in good condition


thanks

your kind of case where the issue is not clear cut, it's best don't buy your own parts. you can check the price and negotiate with the workshop but let him earn a bit.

because if you buy the part and it's faulty or not the problem part you need to settle the return yourself if can. some shops if install already cannot return. better let the workshop earn a bit but if not the problem then u no need to pay for that part they can take it out

actually shop earn many too for the parts...

Compressor and Alternator as low RPM this two buat kacau ... try off AC and see if it still happens


This post has been edited by mewhoyou: May 12 2023, 10:04 AM

i just sense the foreman is not fully competent.

driving without AC?

this kind suddenly die ..without any error code ..
4man did something that potential then try ...
they cannot confirm to identify which parts causing the problem ...need longer time to find out...

you can check online price and negotiate with him. if you think too expensive then go other place. if he can solve your problem and swap out a lot of things for you to test, it think it's fair

don't know. sometimes too cheap workshop also problem

ya ya..4man take more than a month to figure out wat hi the root cause.
yes swap part and monitor without change yet

There are specified ways to diagnose for unknown issues. And sometimes it does take months for workshop to find the culprit. The proper way is using OBD2 and check the readings and graph. This a very complicated process that no many in Malaysia can do.

Old school method still find but takes a bit more of trial and error. However, I see your pomen like main tembak until like just try everything.

Anyway, good luck man. Do update here what have been tried and eventually what is the fix.

haha...ya ..try n error ...

ok ..will update if found the root cause ...

today get back car ..4man changed new O2 sensor ...cost RM285

monitoring again...


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changed 2x ady

1st one 4man put O2 sensor with engine logo light up ..he told no engine off issue ..

2nd change new O2 sensor ..then monitor again

i think 4man dont know what to do ..so just change new O2 sensor see how ...
4man dont want change fuel pump ..plug..plug cable ..he think not the root cause ..items price not cheaper ..


thanks ...

fuel pump rm 130 only.
Takes 15mins to replace if whose unit

https://www.lazada.com.my/products/100-orig...3103719337.html

DIY RM130 ...if 4man RM350 at least

Can datalog and check the readings.

normal workshop 4man know how to interpret the datalog? saw them just check got error code or not only..
not that expert ...

Some can... it depends on their experience and familiarity with the particular engine.
Conti cars 4man normally have higher skills for this because of the complex and weird problems conti engines have.

However if i was diagnosing a Myvi... and since there is so many Myvis around.
I would first datalog a good problem free Myvi vacuum, MAP, O2 reading, Injector duty cycle, ignition timing, cam angles for example.
Then compare with the problematic Myvi and see if the readings are similar or way off.

I've my own scan tools, and those workshops normally have better and more expensive scan tools compared to mine.

have own scan tools ?can share what model ?expensive?
where is your location ?if close can help me to scan ?

thanks ..

If using one off, it's expensive lah... I'm using Thinkcar scanner, the cheapest one.
Not mistaken cost RM 100+ and there is annual subscriptions fee based on function and car brand.

I'm in Melaka

thinkcar have few models ..your one which model ?
just plug and play to do the diag test ?need additional purchase ?
can plug in real time monitoring ?

Melaka too far ..I'm from kedah..


thanks ...

Thinkcar Thingdiag mini
Plug to car OBD2 port and connect to the Thinkcar app on phone.
Additional purchase is annual subscription fee based on the car manufacturer and also function you want.

Yes, can real time monitoring.