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Stone-IslandV8
Really Senior Member II
Joined: 31-January-2003
Location: North Somerset
Status: Offline
Points: 3015
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Posted: 12-October-2003 at 22:04 |
Def made a difference on mine.
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Gentlemen I may not have a brain but I do have an idea
Past; E39 540T/E46 328CI/ E39 535/ E39 520/ E36 M3/ E36 318iS jet black Mtech/ E46 320d/ E36 318iS diamond black/ E36 318iS blue Mtech kit
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MONO
Really Senior Member II
Joined: 04-August-2003
Location: United Kingdom
Status: Offline
Points: 560
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Posted: 02-November-2003 at 18:52 |
Dudes,
An update. I took my car to the local stealers to get new O2 sensors an a oil leak sorted.
I got the car back and it seems to run a bit better now, it still hesitates around 2,000rpm but doesnt seem to misfire like it used to do. It still doesnt feel 100% right but I have given up now!
It's strange as with some of the really cold nights below 4C it seems to run better. The tickover seems to hunt a bit but it's driveable now
I was thinkin of the supersprint Decat pipe cos I hate the cat! it sounds sh*t cos it's cheap quality and it is probably affecting the running to.
It's strange cos no one has come back to me with a resolution!!?? be good if I sort it myself, gonna get one of those manuals and feck about with it. Is there anyway to test the coils?? As I have a sneaky feeling it might be one of those playing up??
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andygriff
Groupie
Joined: 27-October-2003
Location: United Kingdom
Status: Offline
Points: 76
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Posted: 02-November-2003 at 20:28 |
Hi Guys,
All 3.0 M3's have a slight hesitation characteristic during the warm up phase, mainly around 2200RPM. This is a consequence of the combined effects of emission requirements and the VANOS operation. The severity of this "characteristic" can be greatly affected by outside influences such as incorrect valve clearences, throttle banks out of balance and individual cylinder mixture adjustment. These 3 items must be 100% before you go any further and should be done only by a BMW dealer, and preferably by a BMW technician who has been working on this engine since it's introduction and therefore received training in these areas.
Other factors which could also contribute to this problem are as someone suggested, coil problems (easily checked by BMW dealer using oscilliscope) - although I would expect faulty coils to cause worse problems when the engine is hot. Induction air leaks allowing unmetered air into the intake system - could cause lambda faults to be stored in DME and uneven idle when hot depending on severity of the leak - try spraying around the area where the inlet manifold joins the head with a little WD40 or brake cleaner when the engine is idling hot. Any variation in idle speed could indicate a problem in this area. Also, the throttle potentiometer should be replaced at every Inspection 2 service on the S50 engine and can cause all sorts of problems if defective.
Finally, might sound like a silly statement but make sure all the basics are OK such as spark plug condition, air and fuel filters etc.
Hope this helps.
Andy.
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MONO
Really Senior Member II
Joined: 04-August-2003
Location: United Kingdom
Status: Offline
Points: 560
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Posted: 02-November-2003 at 21:36 |
Hey Andy,
Cheers for the info, My car has full Stealer history. It had the inspection 1 service 3 weeks ago which they did the valves and plugs and checked the cold start issue, the DME came out with fault codes for the O2 sensors, that's why i changed them. The potentiometer was changed at the last inspection 2 bout 15K ago.
I was wondering do they ever balance the throttle bodies at any of the services?? mine dont look like thay have ever been touched?? I know from owning bikes that it is key to balance these regularly as it affects idle etc... but never really seen this on cars???
I would like to get em done, any thoughts and if this is a item that is done in a service as I suspect it is not!
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andygriff
Groupie
Joined: 27-October-2003
Location: United Kingdom
Status: Offline
Points: 76
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Posted: 02-November-2003 at 21:52 |
Hi Mono,
No, this is not done at the time of service. It would push the cost of servicing through the roof ! Following the set up of the throttle banks the CO should also be adjusted as these engines have a tendency to "lean off" over a longer period of time. This is a dealer job. I carry out this on any E36 M3 if a customer is complaining of rough running. It's also a good excuse to check the throttle butterflys for distortion (More carbon deposits in front of one butterfly compaired to the other in the same throttle body) as this can cause additional running problems. Also a good time to replace the fuel hoses at the back of the block as these really suffer with the heat. Ensure the intake 'O' rings are replaced when the intake manifold is removed too.
Andy.
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MONO
Really Senior Member II
Joined: 04-August-2003
Location: United Kingdom
Status: Offline
Points: 560
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Posted: 02-November-2003 at 22:04 |
Dude,
That sounds great!! where bouts are you cos you can come and sort my car out!!
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andygriff
Groupie
Joined: 27-October-2003
Location: United Kingdom
Status: Offline
Points: 76
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Posted: 02-November-2003 at 22:16 |
I'm in Jersey ! Sorry Man.
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MONO
Really Senior Member II
Joined: 04-August-2003
Location: United Kingdom
Status: Offline
Points: 560
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Posted: 02-November-2003 at 23:17 |
never mind!!
Hey dont you have a 7mph speed limit over there?? or is that guernsey??
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andygriff
Groupie
Joined: 27-October-2003
Location: United Kingdom
Status: Offline
Points: 76
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Posted: 04-November-2003 at 13:53 |
It's a 40 MPH limit - But France is only an hour away on the boat, my father has a house there, and they don't have speed cameras !
Andy.
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MONO
Really Senior Member II
Joined: 04-August-2003
Location: United Kingdom
Status: Offline
Points: 560
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Posted: 04-November-2003 at 21:28 |
cool,
Sounds like I would be there on my bike then!
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andygriff
Groupie
Joined: 27-October-2003
Location: United Kingdom
Status: Offline
Points: 76
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Posted: 05-November-2003 at 18:24 |
Yeah, I take my VFR837R over for a good thrash now and then. Great roads and very little traffic too. You just have to watch out for those bloody French !
Andy.
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MONO
Really Senior Member II
Joined: 04-August-2003
Location: United Kingdom
Status: Offline
Points: 560
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Posted: 05-November-2003 at 20:01 |
cool!
The french are better than the brits and there are less of them!! + the women look better to!!
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Stone-IslandV8
Really Senior Member II
Joined: 31-January-2003
Location: North Somerset
Status: Offline
Points: 3015
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Posted: 05-November-2003 at 20:47 |
Til they lift their arms!!!
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Gentlemen I may not have a brain but I do have an idea
Past; E39 540T/E46 328CI/ E39 535/ E39 520/ E36 M3/ E36 318iS jet black Mtech/ E46 320d/ E36 318iS diamond black/ E36 318iS blue Mtech kit
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MONO
Really Senior Member II
Joined: 04-August-2003
Location: United Kingdom
Status: Offline
Points: 560
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Posted: 12-November-2003 at 19:07 |
Dudes,
After havin the car back for a while it is getting worse!! it is even doing it now when warmed up!!
It is booked back in at the stealers for 2nd December until they sort it!! It will be going in for 3 days this time cos I want it fixed!! I have even offered to take them out for a spin to show em what it is doing so no excuses, this time!!
I wonder what the problem is??
p.s. everytime I pop into the stealers I always see a 3.0L coupe in!!! strange or what!!??
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MONO
Really Senior Member II
Joined: 04-August-2003
Location: United Kingdom
Status: Offline
Points: 560
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Posted: 07-January-2004 at 20:16 |
Dudes..... me again!!
I am taking my car to Ajec racing in Gloucester tomorrow to have a look at my motor. The problem seem to have extended to when the car is hot now with a misfire at 2-2500rpm then clears at 3000rpm.
It has been into the stealers for a total of 8 days now and it aint fixed.....to be honest I would have done a better job of it myself.
Anyways, wish me luck at hopefully my problem I have had for 7months will be resolved!
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Stone-IslandV8
Really Senior Member II
Joined: 31-January-2003
Location: North Somerset
Status: Offline
Points: 3015
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Posted: 07-January-2004 at 21:43 |
Bet its something simple mate
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Gentlemen I may not have a brain but I do have an idea
Past; E39 540T/E46 328CI/ E39 535/ E39 520/ E36 M3/ E36 318iS jet black Mtech/ E46 320d/ E36 318iS diamond black/ E36 318iS blue Mtech kit
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MONO
Really Senior Member II
Joined: 04-August-2003
Location: United Kingdom
Status: Offline
Points: 560
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Posted: 08-January-2004 at 18:52 |
Still not sorted, took it there today 180 mile round trip oh yeah and on the way in the gales and pissin rain a stupid bitch decided to go into the back of me motor at the lights!!! her foot slipped off the clutch apparently!! luckily there was no damage!! feck knows how cos I went flying forward!
The car came back with 3 faults O2 sensor, knock control, carbon canister vent valve flap. There is nothing wrong with the O2 sensors cos they are new and also the knock control sensor triggers when the engine aint running right as well.
The guy reckons one of the coils is breakin down, didnt have any new coils lying around so tried a few second hand ones but still had the same problem but misfired differently! To be fair the guy was a nice dude and knew his stuff. I reckon it is the coils to......
So I ordered a carbon canister vent valve flap and 1 new coil, I am going to put it on each cylinder and see if it sorts it. The 6 coils are £300!! so I dont want to throw more money away!
christ knows how to fit that vent flap thingy just hope it is simple.
Why cant anyone sort me car!!!! I am ending up doin it me self again!!
Edited by MONO
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MONO
Really Senior Member II
Joined: 04-August-2003
Location: United Kingdom
Status: Offline
Points: 560
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Posted: 03-February-2004 at 18:16 |
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Chris Miller
Really Senior Member I
Joined: 20-September-2003
Location: United Kingdom
Status: Offline
Points: 445
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Posted: 03-February-2004 at 19:22 |
Hi
Glad to see you are sorted at least that is good news.
Chris.
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Stone-IslandV8
Really Senior Member II
Joined: 31-January-2003
Location: North Somerset
Status: Offline
Points: 3015
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Posted: 03-February-2004 at 23:26 |
Good news mate, it'll be 'well' then for the next meet!!
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Gentlemen I may not have a brain but I do have an idea
Past; E39 540T/E46 328CI/ E39 535/ E39 520/ E36 M3/ E36 318iS jet black Mtech/ E46 320d/ E36 318iS diamond black/ E36 318iS blue Mtech kit
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