I need help.. My car power loss 4 more times!
- Thread starter jaskin
- Start date
Re: I need help.. My car power loss 4 more times!
yuen,
if there is a strong petrol smell from the exhaust when the problem occurs, there is a strong likelihood that the ignition system is faulty. one or more cylinders are not firing. and the problem can be either a faulty spark plug cable or spark plug. try to isolate the problem with the set-by-step procedure below:
1. locate the ignition coil (this is not the faulty component since the car will still start and run)
2. locate the spark plug cables
3. disconnect one spark plug cable and start the engine
4. note the presence of the symton
5. reconnect the spark plug cable
6. repeat steps 3 to 5 for each spark plug cable
you can isolate the problematic cable/spark plug pretty quickly with this method. dont know which engine your car has but you will have to remove some engine covers to gain access to the ignition system.
an alternate and more straight way is to replace all the spark plugs as the problem can be due to a faulty spark plug. this is quite cheap too. if the problem persist, then the spark plug cables should be changes but this will be a costlier move.
disclaimer: the above steps, successfully used to diagnose a similar sympton and isolated a faulty spark plug cable, should be carried out at the readers' discretion and the contributor shall not be held responsible for any damage to the readers' vehicle or injury to the readers who are carrying out the procedures.
yuen,
if there is a strong petrol smell from the exhaust when the problem occurs, there is a strong likelihood that the ignition system is faulty. one or more cylinders are not firing. and the problem can be either a faulty spark plug cable or spark plug. try to isolate the problem with the set-by-step procedure below:
1. locate the ignition coil (this is not the faulty component since the car will still start and run)
2. locate the spark plug cables
3. disconnect one spark plug cable and start the engine
4. note the presence of the symton
5. reconnect the spark plug cable
6. repeat steps 3 to 5 for each spark plug cable
you can isolate the problematic cable/spark plug pretty quickly with this method. dont know which engine your car has but you will have to remove some engine covers to gain access to the ignition system.
an alternate and more straight way is to replace all the spark plugs as the problem can be due to a faulty spark plug. this is quite cheap too. if the problem persist, then the spark plug cables should be changes but this will be a costlier move.
disclaimer: the above steps, successfully used to diagnose a similar sympton and isolated a faulty spark plug cable, should be carried out at the readers' discretion and the contributor shall not be held responsible for any damage to the readers' vehicle or injury to the readers who are carrying out the procedures.
SMYUEN said:
piggyboyz
Core Group Members
Re: I need help.. My car power loss 4 more times!
That is your engine misfiring !
The engine misfire for a lot of reason. These days the ECU is so smart that the moment it detcts fault, it will shut the bank of cyclinders, either 1,2,3 or 4,5,6 so u ended up having the engine shuddering...
Go back to PML and they can hook up the diagnoistic to see what component went wrong....
SMYUEN said:
That is your engine misfiring !
The engine misfire for a lot of reason. These days the ECU is so smart that the moment it detcts fault, it will shut the bank of cyclinders, either 1,2,3 or 4,5,6 so u ended up having the engine shuddering...
Go back to PML and they can hook up the diagnoistic to see what component went wrong....
piggyboyz
Core Group Members
Re: I need help.. My car power loss 4 more times!
The new ECU on the current batch of car will not allow the injectors will carry on firing the moment the lamda sensor picks it up.. The individual or the whole bank of cycliner will be shutted off leaving only the rest of the cyclinder to work. This is to protect the cat from being killed by all the unburnt petrol.
The rest of the cycliner that is working ok will continue to propel the car but the car will go into the "limp home" mode and u will realised that cruising is still possible but u will never go past 90kph mark....
U can try to shut the car since the car will reset itself everytime before it fires up but if the fault is permanent, then it will be picked up by the ECU again and shuts the injector immediately.....
peterlaw said:
The new ECU on the current batch of car will not allow the injectors will carry on firing the moment the lamda sensor picks it up.. The individual or the whole bank of cycliner will be shutted off leaving only the rest of the cyclinder to work. This is to protect the cat from being killed by all the unburnt petrol.
The rest of the cycliner that is working ok will continue to propel the car but the car will go into the "limp home" mode and u will realised that cruising is still possible but u will never go past 90kph mark....
U can try to shut the car since the car will reset itself everytime before it fires up but if the fault is permanent, then it will be picked up by the ECU again and shuts the injector immediately.....
piggyboyz
Core Group Members
For those who are interested to read more on our Engine Management system, here's the link.... http://www.bimmernut.com/~micah/images/330zhp/9 part1 engine management.pdf
But do note that the E46 M54 engine is one step more superior as it has got the MS43 software oredi.....
But do note that the E46 M54 engine is one step more superior as it has got the MS43 software oredi.....
Tanzy said:
Its been sorted out.
Its the OWS iridium spark plugs that I got from BVO. Think one or a few of them went koyak.
And they changed back to the original BMW ones and the cost plus labour, diagnostics and what not is $260!!!!
*fainting*
They say they got no goodwill when it comes to this cos it was my own doing.
!@^#&(@&#^(
Btw, pls dont call me good doctor lah.. wah lau.. so "hidden meaning" one...
SMYUEN said:Its been sorted out.
Its the OWS iridium spark plugs that I got from BVO. Think one or a few of them went koyak.
And they changed back to the original BMW ones and the cost plus labour, diagnostics and what not is $260!!!!
*fainting*
They say they got no goodwill when it comes to this cos it was my own doing.
!@^#&(@&#^(
Btw, pls dont call me good doctor lah.. wah lau.. so "hidden meaning" one...
Hi,
I had exactly the same problem with the OWS plugs. Also set me back $200+ for new plugs/labour at PML.
Apparently due to 1st generation OWS plugs, and if you bring back the plugs to BVO, they might change for you 2nd gen ones. But I haven't tried it yet, so don't quote me.
However, I find the engine with the stock plug less smooth and lacking power compared to the Iridiums. What do you think?
DC3,
Hi,
Sigh... real lesson I learnt today. Didnt know about the 2 generations of OWS plugs. Mine is now on "original BMW" NGK spark plugs - honestly, I havent felt any difference leh. In fact, I feel it is pulling smoother now! Unless of course my 6 OWS plugs were all not suitable!
Damn pain man - no rhyme of reasons kenna $265 !!! If you add in the cost of the OWS its another $120!
Sigh...Thats the cost of the ACS tailpipe I am eyeing. Sigh.. sigh... sigh...
Hi,
Sigh... real lesson I learnt today. Didnt know about the 2 generations of OWS plugs. Mine is now on "original BMW" NGK spark plugs - honestly, I havent felt any difference leh. In fact, I feel it is pulling smoother now! Unless of course my 6 OWS plugs were all not suitable!
Damn pain man - no rhyme of reasons kenna $265 !!! If you add in the cost of the OWS its another $120!
Sigh...Thats the cost of the ACS tailpipe I am eyeing. Sigh.. sigh... sigh...
The Mixmaster
Well-Known Member
When you buy the OWS spark plugs at BVO, do you need to say that you want the 2nd generation one?