Noises At about 3000 rpms - United Bimmer Community

**talus22** · 04-19-2006, 01:11 PM

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??

witeshark · 04-19-2006, 01:14 PM

Has the valve timing been adjusted lately?

**xsperf** · 04-19-2006, 07:25 PM

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

**c1apton** · 04-19-2006, 08:43 PM

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?

**Numark318i** · 04-19-2006, 08:49 PM

If its a 4 cyl then ur timing chain is going bad. 800dollar fix from what i have read.

Timing?

**Cellardoor** · 04-19-2006, 09:24 PM

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!

-Hutch-

Storamin · 04-19-2006, 09:48 PM

Check your timing chain. They're suggested to be replaced somewhere around 50-80k miles.

**celsdogg** · 04-20-2006, 01:23 PM

i thought the timing chains in later 318i's were good for the life of the car. . .

**talus22** · 04-20-2006, 10:44 PM

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.

**Numark318i** · 04-21-2006, 01:00 AM

Quote:

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.

**talus22** · 04-24-2006, 12:02 AM

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???

**hartgeh27** · 06-27-2006, 11:58 AM

Yes it is true. Alot of the older 12valve motors will start ticking as the cam and the ecentics wear.

**Numark318i** · 06-27-2006, 02:16 PM

Quote:

Originally Posted by hartgeh27

Yes it is true. Alot of the older 12valve motors will start ticking as the cam and the ecentics wear.

its 16 valve.

**celsdogg** · 06-27-2006, 03:35 PM

^^^ the M42s might be 16 valve, but the M20s are 12

**Numark318i** · 06-27-2006, 08:15 PM

Quote:

Originally Posted by celsdogg

^^^ the M42s might be 16 valve, but the M20s are 12

ic.

well i stand corrected.