325E Blowing black smoke stalling iratic idle

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   ZEROK, are you in America? With it being the 325E then it did use a CAT and as such also used an O2 Sensor, the CAT's weren't introduced on this side of the pond until 91/92, therefore the confusion.You do have an O2 sensor in the exhaust, no12 here -  http://www.realoem.com/bmw/showparts.do?model=1254&mospi d=47308&btnr=18_0173&hg=18&fg=10 
If they tested the O2 sensor then I take it it was confirmed as OK? If it was OK then I would start looking at what was then recommended re the Coolant temp sensor or the AFM.
Rob

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Madrab Members Profile Send Private Message Find Members Posts Add to Buddy List Really Senior Member II Joined: 21-November-2003 Location: Scotland Status: Offline Points: 569	Topic: 325E Blowing black smoke stalling iratic idle Posted: 15-May-2006 at 11:01
	ZEROK, are you in America? With it being the 325E then it did use a CAT and as such also used an O2 Sensor, the CAT's weren't introduced on this side of the pond until 91/92, therefore the confusion.You do have an O2 sensor in the exhaust, no12 here - http://www.realoem.com/bmw/showparts.do?model=1254&mospi d=47308&btnr=18_0173&hg=18&fg=10 If they tested the O2 sensor then I take it it was confirmed as OK? If it was OK then I would start looking at what was then recommended re the Coolant temp sensor or the AFM. Rob
	1990 E3o 325i Touring and she's definately a she! Pain in the ass sometimes but goes like a bunny :oD

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zerokid555 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 09-May-2006 Status: Offline Points: 7	Posted: 13-May-2006 at 18:18
	Some on told me the o2 sensior was down by the exaust and someone actualy checked it. hot or cold its the same sht. the o2 sensior made no difference in helpin it same sht any comments are much opreshiated 2 the issue

Madrab Members Profile Send Private Message Find Members Posts Add to Buddy List Really Senior Member II Joined: 21-November-2003 Location: Scotland Status: Offline Points: 569	Posted: 13-May-2006 at 18:18
	Yeah, check the CTS for resistnce cold and warm. The AFM can cause this type of problem when the track inside gets worn too. Do be careful tho running it like this, you can get severe petrol wash down the bores into the oil. I had water contamination in my ECU that caused the same types of symtoms and ended up adding a litre of petrol to the oil, ended up rattling a wee end bearing.
	1990 E3o 325i Touring and she's definately a she! Pain in the ass sometimes but goes like a bunny :oD

madman Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member II Joined: 26-July-2005 Location: WEST SUSSEX Status: Offline Points: 224	Posted: 12-May-2006 at 16:35
	Mate a 1984 wont have an O2 sensor but it will have a coolant temp sensor which will cause it to overfuel do you notice that it runs better hot or cold as thiswill make a hell of a difference as to what the problem is

zerokid555 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 09-May-2006 Status: Offline Points: 7	Posted: 11-May-2006 at 16:15
	yes that is what i thought overfueling. i talked to some people they said it is an oxygen sensor on its way out that is what causing all my problems.

LuxAuto Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member II Joined: 10-April-2005 Status: Offline Points: 225	Posted: 11-May-2006 at 06:00
	were the plugs very sooty? If so, the car is being over fueled. And what do you mean you did not overfuel? I would check the ignition timing as well.

zerokid555 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 09-May-2006 Status: Offline Points: 7	Posted: 10-May-2006 at 19:52
	Yes the smoke is actualy black. Did not overfuel. i took blugs out they were black.. changed them fired up on 1st trie but same **** .

LuxAuto Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member II Joined: 10-April-2005 Status: Offline Points: 225	Posted: 10-May-2006 at 07:38
	Black smoke would indicate a rich mixture, i.e. you're over fueling. Take out the plugs, what do they look like? Are you sure it is black smoke? Not being patronising but some people call blue smoke black, but whether smoke is black or blue has a big bearing on the state of your engine.

zerokid555 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 09-May-2006 Status: Offline Points: 7	Posted: 09-May-2006 at 21:55
	My 1984 bmw 325E is blowing black smoke and stalling, irratic idleing. What could this be? I have checked the fuel pressure regulator cold start injector and thermo switch and all seemed fine. Any sujestions?