Car starting problem

[dvng]

it's the fuel pump. Remove the rear seats, get someone to turn the key to on without starting the car and listen at the fuel pump to see if its pumping petrol. Before that check the fuse of fuel pump.

 

[ali.firdauz]

starter problem? Maybe there is no cranking sound?

bro, a bit history would help to know your problem. Not all problem are the same.

my ride difficult to start..first 1 had cranking but not started...tried again..produced no sound..sometimes i need to try 5 or 6 times to start the engine..if lucky 1 or 2 times the car can be started..

Firstly i though it could be battery, so i changed it..But still same..I diagnosis the engine stated crankshaft prob..and the same time the mechanics said starter problem...

so, i confused. which one the main caused?

 

[jarance]

my ride difficult to start..first 1 had cranking but not started...tried again..produced no sound..sometimes i need to try 5 or 6 times to start the engine..if lucky 1 or 2 times the car can be started..

Firstly i though it could be battery, so i changed it..But still same..I diagnosis the engine stated crankshaft prob..and the same time the mechanics said starter problem...

so, i confused. which one the main caused?

Normally, BMW car will start during the first crank. If you cannot start the engine, you do have some problem.

1. Crankshaft problem - Yes, crankshaft failure will automatically cut out the ignition coil (firing) and the fuel pump. This is a fail safe feature of the BMW. I have experience intermittent problem with crankshaft sensor with my E36. Sometime, the car cannot start but after a few minutes then the car can start. After a few months later, the car cannot start at all. Got it change and the car start immediately.

2. Starter problem - When you turn the ignition key to crank position, the starter should cranked. If it can crank one time and cannot crank the second time, please check the starter relay. It could be worn out. The cranking of the engine draw about 200 amps. High chance of the relay get worn out is there. There is a method to bypass the relay with a jumper wire to crank the engine. Your mechanic should know how to do it. I think your mechanic is also right in saying you have a starter problem.

3. Battery - Since you have change the battery, just check the terminals for any loose connections.

4. Another thing that you might considered is the fuel pump or the fuel filter.

 

[kcyong33]

E46 cannot start

Tq Jarance for the detailed reply. Mine couldn't start today after it started w/o prob earlier. An hour later it started again.
Going to try again later tonite.
I see yr location "Klg, PD, Jimah, TgB"--gas -fired power stn huh?
Keep up the good work!!!

Normally, BMW car will start during the first crank. If you cannot start the engine, you do have some problem.

1. Crankshaft problem - Yes, crankshaft failure will automatically cut out the ignition coil (firing) and the fuel pump. This is a fail safe feature of the BMW. I have experience intermittent problem with crankshaft sensor with my E36. Sometime, the car cannot start but after a few minutes then the car can start. After a few months later, the car cannot start at all. Got it change and the car start immediately.

2. Starter problem - When you turn the ignition key to crank position, the starter should cranked. If it can crank one time and cannot crank the second time, please check the starter relay. It could be worn out. The cranking of the engine draw about 200 amps. High chance of the relay get worn out is there. There is a method to bypass the relay with a jumper wire to crank the engine. Your mechanic should know how to do it. I think your mechanic is also right in saying you have a starter problem.

3. Battery - Since you have change the battery, just check the terminals for any loose connections.

4. Another thing that you might considered is the fuel pump or the fuel filter.

 

[jarance]

Tq Jarance for the detailed reply. Mine couldn't start today after it started w/o prob earlier. An hour later it started again.
Going to try again later tonite.
I see yr location "Klg, PD, Jimah, TgB"--gas -fired power stn huh?
Keep up the good work!!!

KcYong, You are welocme. have you managed to solve yr problem?
Check the fuel pump as well.

No lah - Not Gas Fired but some other power station..(done 6,600MW) :listen:

 

[More]

the same problem goes to me lst week..lst night i towed my car the workshop..the formen said mayb the culprit is the fuel pump..mine oso e36 325 (95)

 

[More]

ohh..my mech..jst called..its the timming sensor the culprit..n it cost abt RM200..

 

[kcyong33]

Problem still there, intermittently though. Wll be sending to local w/shop to see if they can find the culprit.
Any NS beemer can recommend a gd workshop in Sban??

 

[boys toy auto]

hi bro , can the engine crank ,if can it could be the fuel pump or the ignition (firing) problem .i've got this problem it was the ignition coil it never starts when the engine is hot . good luck and dont worry.

 

[kcyong33]

Hi Bro. Engine can crank, just didnt start at the end of cranking. When jump start, it start alright. This may sound like battery prob but not likely as it started subsequently after a while.
Hopefully w/shop will tell me the prob on monday. TQ Bro.

hi bro , can the engine crank ,if can it could be the fuel pump or the ignition (firing) problem .i've got this problem it was the ignition coil it never starts when the engine is hot . good luck and dont worry.

 

[kcyong33]

Hi Bro. Engine can crank, just didnt start at the end of cranking. When jump start, it start alright. This may sound like battery prob but not likely as it started subsequently after a while.
Hopefully w/shop will tell me the prob on monday. TQ Bro.

hi bro , can the engine crank ,if can it could be the fuel pump or the ignition (firing) problem .i've got this problem it was the ignition coil it never starts when the engine is hot . good luck and dont worry.

 

[erica34]

happened to my e34 last saturday. parked at uptown for a short while, came back and car couldn't start. engine didn't crank at all when i tried to start car. all electricals worked fine. similar to trying to start car in "D". had lunch then tried but still the same. went to Optimum and they brought battery. car started on first try when they came. doubt it was the battery as i looked at battery voltage and it was 12.3 so should be sufficient to turn over engine. anyways, they added second relay. did a search at bimmerforums and found the following thread.

http://forums.bimmerforums.com/forum/showthread.php?t=304777

i'm thinking mine could be the same due to highly similar signs and it was hot that afternoon and car started normally after about an hour. engine had probably cooled down. will get starter solenoid replaced as precaution if possible, else the entire starter.

[EDIT] Didn't have to use spare battery brought by mechanics. Car started normally...

 

[tawfiq]

Hi i am driving a 328 E36 1997.

My car stalls when I brake at traffic light or stiop to pay toll. At high speed the RPM fluctuates and the car speeds up and slows intermittently. The starting of the car is also not smooth.

The problem started after I changed the piston valves as the engine oil was also getting in the engine.

Now my mechanic is saying it is due to crankshaft sensor problem. What to do?