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Old 01-11-2007, 09:15 AM   #31
Alex Dee
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MASS AIR FLOW SENSOR if its only "missfiring" before 3300RPM its ur mass air flow sensor did u just put a air intake on???????????????? the sensor is not sending the proper signal for the amount of fuel needed to the motor
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Old 01-11-2007, 09:21 AM   #32
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^^ good point.. that would also cause stumbling.. unfortunately big $$$ to replace..
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Old 01-11-2007, 10:30 AM   #33
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Quote:
Originally Posted by Flav_cool
What codes?
The ECU codes, if it's a misfire, it'll tell you what cylinder, if it's the AFM, it'll tell you. What year is your car?
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Old 01-11-2007, 10:50 AM   #34
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His car is a 91 build.
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Old 01-11-2007, 11:17 AM   #35
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Yup 91 build.

Ok guys, updates...

Went to charlie's shop today (nice place btw) so I could try one of his coils...guess what...STILL ****ED. Also, I noticed when I got there there was a bit of what I'm guessing was oil underneath the head of the coil (but not in the hole, just on the flat part around the hole that goes down; it would be visible even if you don't remvoe the coil), right at cylinder 3.

I further confirmed it by moving both spark plug and coil from 3 to 2, but it's still disconnecting 3 that makes no difference in how the engine runs. (BTW, i call 3 the 3rd one from the front of the car, but I noticed today they are actually numbered differently, i think 321 456 from the front of the car to the back so it seems like "1" is the official one screwing up)

He didn't have time to check it out today, so I'm going back tomorrow. thinair, which cylinder was not working for you b/c of the ABS codes? Can I check any "ECU codes" myself?

NOTE: my previous post where I said I was testing how the engine ran by quickly stomping on the gas from 2kRPM in neutral and seeing how far the rev went. I realized this is not a good way to test, b/c it's very dependent on how much you press the gas. Anyway, I could hear the difference between 1 bad/not-firing cylinder and 2. 2 was an even a lower sound and harder vibrations.
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Last edited by Dr. Flyview; 01-11-2007 at 11:22 AM.
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Old 01-11-2007, 05:53 PM   #36
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get a new engine.
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Old 01-11-2007, 05:58 PM   #37
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Quote:
Originally Posted by mirek
get a new engine.
nice depressing post budddyyy....
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Old 01-11-2007, 06:33 PM   #38
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why dont you just hand your car over to Bimmersport or RMP and get em to check it out since all your tests and replacing havent solved your problem....i was stumped on something like this is what i would do.
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Old 01-11-2007, 06:34 PM   #39
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Quote:
Originally Posted by e30_kid89
why dont you just hand your car over to Bimmersport or RMP and get em to check it out since all your tests and replacing havent solved your problem.
READ man READ.
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Old 01-11-2007, 06:54 PM   #40
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Quote:
Originally Posted by mirek
get a new engine.
Actually mirek, a non vanos m50 is MUCH MUCH better than your 2 litre.

I have no problem with you being negative, just get your facts straight

ABS will just prevent your car from going past a certain speed, it doesn't turn off one particular cylinder.

Flaviu, be nice, devon is trying to give you some advice.
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Old 01-11-2007, 07:50 PM   #41
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Quote:
Originally Posted by propr'one
Flaviu, be nice, devon is trying to give you some advice.
Sorry, who's devon? If it's e30_kid89, I know, but it ticks me off when I've mentioned something and it wasn't read.

What's the worst case scenario on these symptoms? Cylinder's bad in some way? Engine rebuild?

How much is a complete engine rebuild actually? And would it suffice to make the engine good enough to be boosted?
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Last edited by Dr. Flyview; 01-11-2007 at 07:53 PM.
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Old 01-11-2007, 08:29 PM   #42
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Quote:
Originally Posted by Flav_cool
Sorry, who's devon? If it's e30_kid89, I know, but it ticks me off when I've mentioned something and it wasn't read.

What's the worst case scenario on these symptoms? Cylinder's bad in some way? Engine rebuild?

How much is a complete engine rebuild actually? And would it suffice to make the engine good enough to be boosted?
Why rebuild when you can get another m50 for like 800 bucks? (thats the last price I saw one going for)
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Old 01-11-2007, 08:53 PM   #43
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Quote:
Originally Posted by Flav_cool
Sorry, who's devon?
Some hot chick who's in a lot of movies.
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Old 01-11-2007, 09:22 PM   #44
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^^^^^^^^^^^ OT BAN BAN BAN BAN!!!!



anyways. flav, i know what you're saying bro, but its not like you catch what i'm saying 100% of the time.

worst case scenario? yeah, new engine time. If you're losing enough compression in #3, its gonna be a problem.

Boots, non vanos m50's can go for more than that. However, flav' would only have to buy the motor itself, and not a complete motor (no need for accessories, ecu, etc, if he's buying the same motor)


But why are we talking about buying motors. you dont even know what's wrong yet
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Old 01-11-2007, 10:42 PM   #45
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Quote:
Originally Posted by propr'one
Boots, non vanos m50's can go for more than that.
I paid $600 for a non-vanos M50 with all accessories, front subframe, control arms, brakes, wiring harness, and ECU. So while they CAN go for more, the CAN go for less .
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