Engine Missfires/stutters - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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#1 (permalink) Old 08-30-2005, 08:26 AM
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Hi guys i have a bmw e36 328i 1995 convertible, and overnight i have developed a problem. Upon start up the car idles ok and if i rev it through the rev range slowly it is ok but as soon as i put my foot down a bit harder to rev it stuttters and misses all the way through the rev range.
When the car is idleing and you just quickly stab at the accelerator to rev it to 1000rpm it nearly stalls the engine. The other symptom i have is that when it is warm it it will run a little better it will idle fine and if you accelerate it will drive ok but it then has a massive flat spot as though it has been starved of fuel momentarily at around 2500-3000rpm.
I have looked at the spark plugs which are still relatively new but they look a bit sooted up.
Again this issue just happened overnight there wasnt any problems leading up to it ! please can you help me i have no idea as to what it can be?

Regards Demonoid
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#2 (permalink) Old 08-30-2005, 07:05 PM
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have you done a compression test? check your sparkplug wires also. also clean your icv.

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#3 (permalink) Old 08-31-2005, 04:31 AM
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try to get trouble codes out first if you can,



could be a plugged fuel filter , plugged cats ,bad muffler or flap , loose crank ring ,

check the above & let us know.

&lt;a href=&quot;/forum/index.php?showuser=21196&quot;&gt;<img src='http://obd2guru.com/dio/obd2guru.gif' border='0' alt='user posted image' />&lt;/a&gt;

If everithing fails try the hammer. obd2? <a href='http://www.obd2guru.com' target='_blank'>obd2guru.com</a>
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#4 (permalink) Old 08-31-2005, 06:57 AM
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Is your car a 325 or 328? As far as I know they didnt have 328 in 95.

I agree with guru run a scan, see what comes up and check fuel filter. Check your fuel and the dme relays. Knock or crank sensor could - from what Ive heard before.

Guru, what do you mean by loose rotor?

-Serge
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#5 (permalink) Old 08-31-2005, 08:12 AM
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just a thought, but does anyone know a website to find replacement cats? i've only found a few websites and they had limited model replacements.

Your Lane ------>
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#6 (permalink) Old 08-31-2005, 10:33 AM
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Thankyou for the replies i have just removed the idle control valve and gave that a clean, This didnt rectify the problem at all The next thing i shall do is replace the fuel filter and see if that makes any difference ghead .
The engine manegment light is not on but could it stilll have a log of the fault in the brain even though the engine management light has never been on?

Thankyou for your time regard Ash.
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#7 (permalink) Old 08-31-2005, 02:03 PM
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doh , u got me ,

&lt;a href=&quot;/forum/index.php?showuser=21196&quot;&gt;<img src='http://obd2guru.com/dio/obd2guru.gif' border='0' alt='user posted image' />&lt;/a&gt;

If everithing fails try the hammer. obd2? <a href='http://www.obd2guru.com' target='_blank'>obd2guru.com</a>
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#8 (permalink) Old 08-31-2005, 03:38 PM
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i have now changed the fuel filter and it still hasnt rectified the problem, is there a way that you can check the condition of the coils ie:check resistance with a multimeter if so does anybody know the figures to go by! also could the fuel pump relay cause such a fault .

quick overview of the problem, if i blip the accelerator quickly it nearly stalls and i have a major stutter/missfire/flatspot under normal acceleration around 2-3000rpm, this car is an auto 328 convertible 1995 ! any help would be a bonus and thanks to all that have already helped me

Regards Ash
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#9 (permalink) Old 09-01-2005, 03:04 AM
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first of all you will need to check the trouble codes , check your tps for flat spots with a ohm meter , should be around 4.7 k ohms from terminal 1-2 and 2-3 , check the ohmeter while you move the throttle for a glitch,

other tip ,is to make sure that your crank sensor connector is tight and

no debris around it, after that try to disconnect the cam sensor

connector and try reving the engine , i dont remember , but it shouldnt

die if disconnected while running, it should switch to parallel injection

instead of sequential,

&lt;a href=&quot;/forum/index.php?showuser=21196&quot;&gt;<img src='http://obd2guru.com/dio/obd2guru.gif' border='0' alt='user posted image' />&lt;/a&gt;

If everithing fails try the hammer. obd2? <a href='http://www.obd2guru.com' target='_blank'>obd2guru.com</a>
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#10 (permalink) Old 09-03-2005, 12:38 AM
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yeah check the fault codes, but my guess is faulty spark plugs or plug wires. also your gas could possibly have water or dirt in in, you might consider draining it and starting again from there if the plug wires and plugs turn out good.
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#11 (permalink) Old 09-03-2005, 06:06 AM
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[quote=kyle_baker,Sep 3 2005, 06:38 AM]
I asked the question earlier "would the car have fault codes if the engine management light has never been on?"
No one seemed to know i may put some injection cleaner in and thrash it down the motorway for a while to empty the fuel and refill with fresh to see if that helps my issues! If this is not sorted in a couple of weeks i may just sell it but the bodywork and interior is mint and would be hard for me to part with it .
Sometimes i wish it would totaly go wrong! intermitant/niggly issues are the worst ones, But i dont give up easily.
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#12 (permalink) Old 09-03-2005, 07:18 AM
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If you got codes, the check engine light will NOT come on. I dont think you should be lookin at the coils though. I dont think all the coils can fail at the same time. If just one did i dont think the car would act the way its acting right now. Do you smell a lot of gas? If the spark wasent right wouldnt it make sence that the gas would not all get burnt and you would smell the gas. I am thinking that you have a failing MAF, maybe. If its miss reading the air the computer gets wrong reading and the fuel and spark will be off too. But you should really have he codes checked before you do anything else.

Note: the e36 (along with all the bmws of its era and new bmws), doesnt not have spark plug wires, because each spark plug has its own coil.

-Serge
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#13 (permalink) Old 09-03-2005, 11:09 AM
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Thanks guys i put some injector cleaner in it today and hammered it up and down the motorway for 50 miles (that was fun) wasted loads of fuel but that was the idea. The car still performs well apart from this mid/rev judder that is still evident.
So i think it is time to bite the bullet and book it into get the codes checked out as you all suggested. i will let you know how it goes thankyou all again for all your time fingers crossed.
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#14 (permalink) Old 09-03-2005, 01:11 PM
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Quote:
Originally posted by Demonoid@Aug 30 2005, 02:26 PM
Hi guys i have a bmw e36 328i 1995 convertible, and overnight i have developed a problem. Upon start up the car idles ok and if i rev it through the rev range slowly it is ok but as soon as i put my foot down a bit harder to rev it stuttters and misses all the way through the rev range.
When the car is idleing and you just quickly stab at the accelerator to rev it to 1000rpm it nearly stalls the engine. The other symptom i have is that when it is warm it it will run a little better it will idle fine and if you accelerate it will drive ok but it then has a massive flat spot as though it has been starved of fuel momentarily at around 2500-3000rpm.
I have looked at the spark plugs which are still relatively new but they look a bit sooted up.
Again this issue just happened overnight there wasnt any problems leading up to it ! please can you help me i have no idea as to what it can be?

Regards Demonoid
[snapback]373334[/snapback]
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#15 (permalink) Old 09-03-2005, 01:25 PM
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As you can probably tell by the disaster ive just had trying to reply,im a newbie.My problem is exactly the same as demonoids,and i know how frustrating it is.But looking at the suggestions from you guys has given me a good start in trying to sort it out.cheers
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