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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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Old 02-04-2005, 08:58 AM   #1 (permalink)
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I am doubting that the ECM is fauly, but how do I make sure before I buy a new one? is there a specific test for ECM?

BMW 320i, 1994 (6 cylinders , 2 liters).

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Old 02-04-2005, 10:59 AM   #2 (permalink)
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no help guys!
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Old 02-04-2005, 04:42 PM   #3 (permalink)
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ecm? what is that? more info would be helpful

electronic control module? only way I know how to tell if it's dead is to hook it up to a big machine called a moddic or something like that to test.
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Old 02-05-2005, 09:31 AM   #4 (permalink)
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Yeah... Electronic Control Module....

All fingers are pointing to it...

Are you suggesting I send for a check at the dealers?
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Old 02-05-2005, 02:54 PM   #5 (permalink)
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either the dealer or a shop that has the proper equipment to test it.. my ews system went out last week and is being replaced right now. good luck man. what are the symtoms of your car btw?
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Old 02-06-2005, 01:13 AM   #6 (permalink)
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ok... whats your problem.. I'm pretty good with electronics... atleast e36 stuff...

Ask jrhaile... lol

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Old 02-06-2005, 01:16 AM   #7 (permalink)
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^ solved my problem from across country on the phone lol... he's da man
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Old 02-08-2005, 03:39 AM   #8 (permalink)
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sorry for late answering:

I have a combination of weird only when it starts problems! I've been reading and asking people about it, and they suggested that it could be a faulty ECM.

Problem 1:

1. Erratic IDLE : replaced ICV, cleaned it, and tested it (electrical test) : nothing seems to be wrong! MAF : nothing seems to be wrong....
ONLY when it starts 50% of the times.

2. takes too long to start : if this happens, no erratic IDLE condition is there AT ALL... : New spark plugs, battery is checked, starter seems to be cranking properly! 50% of the times it happens.

3. No Erratic Idle, prompt starting : Erratic at 2k RPM, then when in operational temperature keeps improving... A/C on helps alot.

4. Unstable RPM at 5-6k RPM, the RPM meter is not as smooth as it was..

5. rarely (but does happen) : at 120km/hour it gives a feeling of fuel starvation (as if the engine stops momentrly)....

All the above does not happen in combination (only one problem at a time) and ONLY when cold starting the car, and then it goes away completely (NO TRACE whatsoever) ...

Any help?!
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Old 02-10-2005, 11:38 AM   #9 (permalink)
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Hey guys... no help?
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Old 02-10-2005, 01:27 PM   #10 (permalink)
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it defiantly sounds like a bad control module to me, but which one, I don't know. could be you DME unit for all I know. I'd take it to someone who has the proper equipment to test it.
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