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E21, E30 General discussion and technical help for 1975-1991 3 series cars.

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Old 04-19-2006, 01:11 PM   #1
talus22

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Noises At about 3000 rpms

Alright here goes something else...
I got this high pitch either grinding or rattling noise at about 3000to 3400 rpms in each gear...It ONLY happens during acceleration and generally only during rapid acceleration...
any thoughts??
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Old 04-19-2006, 01:14 PM   #2
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Has the valve timing been adjusted lately?
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Old 04-19-2006, 07:25 PM   #3
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are you sure it disappears after 4K RPM, or is it just that the engine noise is louder than the whining.... it may be your belts, but thats a horrible answer and i have no idea.. just thought you may be observant of that
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Old 04-19-2006, 08:43 PM   #4
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Quote:
Originally Posted by talus22
Alright here goes something else...
I got this high pitch either grinding or rattling noise at about 3000to 3400 rpms in each gear...It ONLY happens during acceleration and generally only during rapid acceleration...
any thoughts??
Your description is pretty vague. I think model, mileage, year and condition of car would be great help to those of us trying to help you diagnose this from afar. (pics of car & engine compartment would be helpful too - believe it or not. There's a ton of folks here who can spot stuff in pics)
I may have you confused with another new member but aren't you the guy with the handling problem with 2 different tire/wheels too?

Last edited by c1apton; 04-19-2006 at 08:45 PM..
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Old 04-19-2006, 08:49 PM   #5
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If its a 4 cyl then ur timing chain is going bad. 800dollar fix from what i have read.

Timing?
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Old 04-19-2006, 09:24 PM   #6
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it could also be something really simple man...... check your heat shield and makesure it is all still secure (particularly around your driveshaft) i know mine was giving me shit a little while ago so i just had to tack it back up ! lets hope its something simple like that and not anything major!

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Old 04-19-2006, 09:48 PM   #7
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Check your timing chain. They're suggested to be replaced somewhere around 50-80k miles.
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Old 04-20-2006, 01:23 PM   #8
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i thought the timing chains in later 318i's were good for the life of the car. . .
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Old 04-20-2006, 10:44 PM   #9
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yah im the new guy my steering is good now that i got my new matching rims on haha ima get it checked out this weekend and ill post some pics up tomorrow thanks yal
its an 88 325e with 159,000k miles on it.

Last edited by talus22; 04-20-2006 at 10:54 PM..
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Old 04-21-2006, 01:00 AM   #10
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Originally Posted by celsdogg
i thought the timing chains in later 318i's were good for the life of the car. . .
the chain itself is. I think it was some internal that held on the chain on or tensioned. Not sure exactly. I know something would start rattling at around 3k rpm..and it would be annoying. Thats what i thought he was talking about.

Since its a 88 325..it cant be a M42. So...idk.
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Old 04-24-2006, 12:02 AM   #11
talus22

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Quote:
Originally Posted by witeshark
Has the valve timing been adjusted lately?
Nope BUT i took it in and they said it was the valve timing that was making the noise...they did adjust it and its a lil quieter but not gone away...they said thats all they could do though....said it wasnt a bad thing that it happens with some older cars.....
IS this true???
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Old 06-27-2006, 11:58 AM   #12
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Yes it is true. Alot of the older 12valve motors will start ticking as the cam and the ecentics wear.
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Old 06-27-2006, 02:16 PM   #13
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Yes it is true. Alot of the older 12valve motors will start ticking as the cam and the ecentics wear.
its 16 valve.
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Old 06-27-2006, 03:35 PM   #14
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^^^ the M42s might be 16 valve, but the M20s are 12
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Old 06-27-2006, 08:15 PM   #15
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Quote:
Originally Posted by celsdogg
^^^ the M42s might be 16 valve, but the M20s are 12
ic.

well i stand corrected.
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