E46 318i (M43) RPM not smooth/ticking (Problem Solved)

[jackmok]

Hi ppl! I just want to share one of my pain in the axx experience with my E46. When I bought this car 3 years ago, it started ok, but few month later, the RPM starts to tick very minorly (no fault codes). My wife who drives cant notice, just felt powerless. When u floor the accelerator, up gentle slope (i.e. shears bridge), at 3rd gear 60kmh, the RPM will stay around 2200RPM and and fluctuating up and down 10-20RPM. Sometimes (most of the times), on straight road, 2nd or 3rd gear, WOT or 3/4 throttle, similarly the RPM refuses to accelerate like a normal car should, the RPM will go up and pulse, up and pulse up and pulse, very minimal but irritating enough for me to notice.

I changed many things to troubleshoot, I changed fuel filter, fuel pump, check vac leaks, fuel pressure reg (although this fellow is not the cause, but it solved my "difficult to start" problem), camshaft position sensor, MAF...

Recently, I changed the pre-cat o2 sensor, and my 2 years problem is solved! The acceleration is smooth, no ticking RPM, the car seems much livelier.

Then I bought a bluetooth OBD 2 scanner to read codes. And pops up a "p0340 powertrain cps A circuit bank 1", immediately I recalled that I changed my original Camshaft position sensor with a cheap ebay one when my RPM ticks, and CPS is failing. I immediately changed back to the OEM one (supposedly not spoil), clear the fault code, and no more fault code! Car drive even better!

Hope anyone with similar problem can benefit from my experience.

Cheers!

 

[Red_Bean_Bun]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

Any pics of your ride ?

 

[jackmok]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

Any pics of your ride ?

My profile pic..... Which part r u interested to see! I got many of my car photos....

 

[wt_know]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

all this because of O2 sensor ... diagnostic tool cannot pinpoint the problem initially?

Hi ppl! I just want to share one of my pain in the axx experience with my E46. When I bought this car 3 years ago, it started ok, but few month later, the RPM starts to tick very minorly (no fault codes). My wife who drives cant notice, just felt powerless. When u floor the accelerator, up gentle slope (i.e. shears bridge), at 3rd gear 60kmh, the RPM will stay around 2200RPM and and fluctuating up and down 10-20RPM. Sometimes (most of the times), on straight road, 2nd or 3rd gear, WOT or 3/4 throttle, similarly the RPM refuses to accelerate like a normal car should, the RPM will go up and pulse, up and pulse up and pulse, very minimal but irritating enough for me to notice.

I changed many things to troubleshoot, I changed fuel filter, fuel pump, check vac leaks, fuel pressure reg (although this fellow is not the cause, but it solved my "difficult to start" problem), camshaft position sensor, MAF...

Recently, I changed the pre-cat o2 sensor, and my 2 years problem is solved! The acceleration is smooth, no ticking RPM, the car seems much livelier.

Then I bought a bluetooth OBD 2 scanner to read codes. And pops up a "p0340 powertrain cps A circuit bank 1", immediately I recalled that I changed my original Camshaft position sensor with a cheap ebay one when my RPM ticks, and CPS is failing. I immediately changed back to the OEM one (supposedly not spoil), clear the fault code, and no more fault code! Car drive even better!

Hope anyone with similar problem can benefit from my experience.

Cheers!

 

[Red_Bean_Bun]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

It's an m43 ...... Need experience and patience to diagnose.

 

[brosiss]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

send to Doc Rod, he E46 expert.

 

[Kaka99]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

thanks jack,

i have rpm tickling problem during idling too. i realized it during traffic stops and rev-ing up.
i am driving a E90 2006 model. i wonder what may be the problem and how much u actually spent to rectify it?
i have weak engine start-up, it sounds as if the battery is weak, the initial start up in the morning is weak sometimes may have to even press 2 times " START " button to start.

Can i have any advice ? Thank you so much brother. u can pm or reply here. thanks

 

[ac323]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

thanks jack,

i have rpm tickling problem during idling too. i realized it during traffic stops and rev-ing up.
i am driving a E90 2006 model. i wonder what may be the problem and how much u actually spent to rectify it?
i have weak engine start-up, it sounds as if the battery is weak, the initial start up in the morning is weak sometimes may have to even press 2 times " START " button to start.

Can i have any advice ? Thank you so much brother. u can pm or reply here. thanks

starter issue?







cheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeers

 

[vexxus]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

starter issue?

cheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeers

Understand E90 have got the starter failing problem, a lot have the starter replaced.

 

[Kaka99]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

Understand E90 have got the starter failing problem, a lot have the starter replaced.

Thank brothers for the replies.
i shall send my e90 to the workshop for more diagnosis.

 

[vexxus]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

Thank brothers for the replies.
i shall send my e90 to the workshop for more diagnosis.

No worries.

I had mine replaced too, but not because starter failure, due to myself dunno how to start a bimmer.....

 

[jackmok]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

thanks jack,

i have rpm tickling problem during idling too. i realized it during traffic stops and rev-ing up.
i am driving a E90 2006 model. i wonder what may be the problem and how much u actually spent to rectify it?
i have weak engine start-up, it sounds as if the battery is weak, the initial start up in the morning is weak sometimes may have to even press 2 times " START " button to start.

Can i have any advice ? Thank you so much brother. u can pm or reply here. thanks

RPM up and down... I dono why, but I learnt something, always diagnose first. If no fault code, then must find sifu.... Hard start in morning, I had similar problem, it was due to fuel regulator near fuel rail. I changed, prob solve. But also could be fuel filt n fuel pump, but don't think ur young car wil hav such problem.

 

[Wenhui_06]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

Hi all, need help to solve my problem. Car at time when stopped at traffic light, moving off the car will suddenly die off and had to restart a few time before the engine will crank. Anyone can advise what is the problem. Thanks.

 

[Wenhui_06]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

Hi all, anyone can assist or know which workshop is good at diagnosing E46? Thanks.

 

[seanskye]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

My choice is R2D.....

 

[Wenhui_06]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

My choice is R2D.....

Hi, where is the location and who do I look for? Thanks.

 

[Red_Bean_Bun]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

Ah Wee at BVO.

Hi all, anyone can assist or know which workshop is good at diagnosing E46? Thanks.

 

[MW]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

Both r at PML....best diagnostic company for BMW

 

[seanskye]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

Both r at PML....best diagnostic company for BMW

Actually totoseow workshop also good!

 

[Wenhui_06]

Re: E46 318i (M43) RPM not smooth/ticking (Problem Solved)

Ah Wee at BVO.

Hi, any contact number to contact them. Thanks alots bro.