Car "coughs" during morning cold start

[Blacknight05]

Re: Car "coughs" during morning cold start

What's the market rate to replace fuel pump?

 

[Blacknight05]

Re: Car "coughs" during morning cold start

Help!! My car still coughing during start up.

Changed my battery, spark plugs, ignition coils and 2 days ago, even the fuel pump and fuel filter. What else should I change?

 

[Choo Yao Chuen]

Re: Car "coughs" during morning cold start

Bro, why don't you send it in for a check-up?
Sorry i can't help. I not mechanic

 

[Ahbengdriver]

Re: Car "coughs" during morning cold start

Help!! My car still coughing during start up.

Changed my battery, spark plugs, ignition coils and 2 days ago, even the fuel pump and fuel filter. What else should I change?

CHANGE THE CAR

 

[Ninja]

Re: Car "coughs" during morning cold start

i had the same problem last week

car parked overnight, next morning first crank, car started, idle was not stable, going up and down between 300 - 1500, and worst still miss firing to compliment with....

after few attempts, still the same....no code appear, 1 hour later try again.... swee swee liao no problem... and it swee swee throughout the day.

next day same problem again..... came across red bean bro advise push the start button 3 times w/o pressing the brake and it worked...

decided to send to ws the next day, and same thing happened again in the first crank of the day, after applied red bean bro method, when trying to move off, step on the gas, the vibration started again....very jia luck...

send to ws, scanned, 'piston 1 and 4 mis-fired' and 'eccentric shaft sensor faulty',
so ws recommend to replace ignition coil and spark plugs, as the later was more intensive
coils and plugs replaced and faulty code was erased, tested the car all good, drive home happily.

next morning first crank, nbz issue was back... call ws, he said send back, need to replace the eccentric shaft sensor liao no choice...and he will refund the ignition coils money back...

eccentric shaft sensor changed, engine oil and filter changed and clean some oil sludge , and i told him not to remove the coils since already installed.

happy driving till now.

 

[Red_Bean_Bun]

Re: Car "coughs" during morning cold start

i had the same problem last week

car parked overnight, next morning first crank, car started, idle was not stable, going up and down between 300 - 1500, and worst still miss firing to compliment with....

after few attempts, still the same....no code appear, 1 hour later try again.... swee swee liao no problem... and it swee swee throughout the day.

next day same problem again..... came across red bean bro advise push the start button 3 times w/o pressing the brake and it worked...

decided to send to ws the next day, and same thing happened again in the first crank of the day, after applied red bean bro method, when trying to move off, step on the gas, the vibration started again....very jia luck...

send to ws, scanned, 'piston 1 and 4 mis-fired' and 'eccentric shaft sensor faulty',
so ws recommend to replace ignition coil and spark plugs, as the later was more intensive
coils and plugs replaced and faulty code was erased, tested the car all good, drive home happily.

next morning first crank, nbz issue was back... call ws, he said send back, need to replace the eccentric shaft sensor liao no choice...and he will refund the ignition coils money back...

eccentric shaft sensor changed, engine oil and filter changed and clean some oil sludge , and i told him not to remove the coils since already installed.

happy driving till now.

Your's must be a N55 engine ...... N54 got no voltronic ..... So no eccentric shaft sensor .......

But if really do the eccentric shaft sensor - along the way check the valve cover gasket ......

 

[Blacknight05]

Re: Car "coughs" during morning cold start

CHANGE THE CAR

Not giving up yet. The car has undergone massive makeover and also codings by Codewerx. It's still fun to drive, despite the longer than usual crank, no irratic rpm fluctuation at all.

Suspect the fuel line in engine bay, anyone has this same issue?

 

[Red_Bean_Bun]

Re: Car "coughs" during morning cold start

Would check either the fuel pressure regulator or the vacuum line for the regulator ..... That keeps the pressure in the fuel pump in.

Not giving up yet. The car has undergone massive makeover and also codings by Codewerx. It's still fun to drive, despite the longer than usual crank, no irratic rpm fluctuation at all.

Suspect the fuel line in engine bay, anyone has this same issue?

 

[Ninja]

Re: Car "coughs" during morning cold start

Your's must be a N55 engine ...... N54 got no voltronic ..... So no eccentric shaft sensor .......

But if really do the eccentric shaft sensor - along the way check the valve cover gasket ......

gasket changed also

 

[Blacknight05]

Re: Car "coughs" during morning cold start

Would check either the fuel pressure regulator or the vacuum line for the regulator ..... That keeps the pressure in the fuel pump in.

Hi Tony, can you quote me the prices to replace these? Must replace either part or both together? Thanks.