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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 01-13-2014, 01:36 AM   #1
Diazz
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Join Date: Jan 2010
Location: Sweden
Posts: 197
My Ride: Bmw 325Ci -01
M54B25 Doesn't want to rev while in gear!

Hey everybody!

This morning when i was going to work i noticed while i was trying to accelerate my car didnt really want to.

In neutral it revs perfectly fine, but in gear it starts to shudder and doesnt really wanna go, it would take me miles to rev all out on one gear. It sounds a bit rough but no screeching or something like that, sortof like it's running on 5 cylinders. Or as if a caliper is stuck really hard (But it's not, the car rolls just fine downhill)

But again, in neutral it just runs like normal, i have had the (very occasional) misfire in idle, the car kindof starts to vibrate and the car is sounding like a diesel. I have not yet had the chance to do any kind of testing yet because i had to leave the car so i was hoping i could get a few tips to look for when i get to it.

The car is a 325ci -01 with a manual gearbox, thank you so much for any help!
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Old 01-14-2014, 08:54 PM   #2
lszlszx
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Join Date: Jan 2013
Location: Socal
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My Ride: 328i
Is the SES light on?
Are your fuel pump/filter original?
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Old 01-15-2014, 04:50 AM   #3
Diazz
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Quote:
Originally Posted by lszlszx View Post
Is the SES light on?
Are your fuel pump/filter original?
Is the Ses light the yellow enginelight? In that case yes!
I do not know about the pump/filter, but it was freezing at the time maybe there is water in the filter? Seems like a reasonable reason for why it only happens whilst in Gear, thank you so MUCC!
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Old 01-19-2014, 05:15 PM   #4
Diazz
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Join Date: Jan 2010
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My Ride: Bmw 325Ci -01
Update, i poured some ethyl alcohol (i think it's called that, another name here) in my gas which is meant to disolve ice and stuff and the car runs great after having that through the system, so it all points to the filter, will switch asap Thank you so much for your help!
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