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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 03-16-2015, 10:52 AM   #1
randthomp78
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Engine or trAnsmission? Please help:

Hey guys, I'm new and this is my first post. I have a 2004 330 CI auto, convertible, when you first start the car you must let it warm up for 5 to 10 minutes no matter what the temperature is outside, or if you don't you can press on the gas and the engine will rev way up & the car will barely move in gear, also if not warmed up when first taking off "sometimes "it kind of does this puttering thing as if you were pressing and releasing the gas very quickly. It seems like putting it in sport mode helps. I have changed the oil/oil filter and fuel pump and filter.
2. Another problem I'm having with it is about one out of every six starts, the engine will not turn over, you have to turn the key completely off and then do it again, it ALWAYS starts on the second try. It has been suggested that I try changing the coil packs and spark plugs but it was also suggested that the fuel pump/filter would fix it it did not.... Please help
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Old 03-16-2015, 11:36 AM   #2
Dave1027
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1. Transmission related. Could be low fluid or clogged filter. Do a fluid/ filter replacement with Redline D4. fluid

2. Sounds like a intermittent connection in the ignition switch.
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Old 03-16-2015, 03:24 PM   #3
randthomp78
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Thanks dave1027! I had taken it to have that done, and they scared me off by saying that it could make it go completely out if it had something wrong with it when they flushed it and stuff
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Old 03-16-2015, 03:48 PM   #4
Dave1027
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Take the car to a different shop. Any shop that gives you that lame line of BS cannot be trusted to do a proper job any way.
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Old 03-16-2015, 04:07 PM   #5
randthomp78
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Okay I will check around for someone else to do it...they said it cost $150 does that sound right
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Old 03-16-2015, 04:09 PM   #6
Dave1027
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Yep, $150 is about right. Remember to use Redline D4 even if you have to supply your own to the shop.
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Old 03-16-2015, 08:29 PM   #7
randthomp78
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Ok... Why redline D4
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Old 03-16-2015, 08:51 PM   #8
TroutSC
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Do a standard fluid change ...not the flush.
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Old 03-17-2015, 08:59 AM   #9
lszlszx
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There are 3 issues:

1. Transmission won't engage when cold.
It could be as simple as low fluid level, or a more serious problem.
Try fluid change, as suggested.
What is the mileage?

2. Intermittent hesitation.
There may be a vacuum leak if this happens when cold and off idle.
Check fuel trims at idle and post them.
May be time to replace some rubbers and plastics.

3. Intermittent no start.
Possible failing ignition switch, or starter.
The only way to find out is by diagnosing when the engine won't start.
See info in my No start thread!

If you have a shop do the work, post the estimate here before you agree to anything.
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Last edited by lszlszx; 03-17-2015 at 09:01 AM.
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Old 03-17-2015, 12:06 PM   #10
Dave1027
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Quote:
Originally Posted by randthomp78 View Post
Ok... Why redline D4
Because it's a high quality full synthetic fluid that's recommended by vendors and proven to work well in these transmissions. Cost is not excessive either.
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Old 03-20-2015, 01:23 PM   #11
randthomp78
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Ok .. Thanks !
Has 151,000 + miles
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Old 04-06-2015, 10:36 AM   #12
randthomp78
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Okay, took it today to have transmission fluid change not flush. They said I would have to take it to the BMW dealership, that only they could do it....strange because it's the same place that was telling me last time that if I did I flush on it and it had a problem it could really mess it up. Now they're saying they can't do it at all. I think they are worried they may terret up because they don't know what they're doing
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