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E36 M3 (1992-1999) {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999


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Old Tue, Mar-07-2017, 12:45:22 AM   #1
Bmwpower603
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Default Dealer diag parts questions

I brought my car to the dealer today to have my friend who works there inspect my 1998 M3. He said it needs upper strut mounts, power steering lines, and shift shaft seal.

Not a bad list. But he told me to get front and rear coil overs. Since I can install them myself without a lift. And most kits come with the mounts...

Can someone lead me in the right direction for coil overs?

Also, I know that my power steering pump makes a high pitch screeching noise at start up. Until it gets warm. Could this just be the leaky lines ? Or could this be the pump?

Vehicle has 114k


Thank you !
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Old Tue, Mar-07-2017, 02:00:22 AM   #2
Richardsperry
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Default Re: Dealer diag parts questions

Get a new friend. Lol

The noise is probably a tensioner.
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Old Tue, Mar-07-2017, 02:09:50 AM   #3
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Default Re: Dealer diag parts questions

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Originally Posted by Richardsperry View Post
Get a new friend. Lol

The noise is probably a tensioner.

I was thinking it could be a tensioner also, or simply a belt. So I did both belts. Still have the awful noise.

And as for the coil overs. Are you saying I should just replace the mounts and keep the original BMW shocks ?

I can probably post a video of the noise.

Here it is.


Last edited by Bmwpower603; Tue, Mar-07-2017 at 02:19:53 AM.
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Old Tue, Mar-07-2017, 02:26:44 AM   #4
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Default Re: Dealer diag parts questions

I would not just buy coilovers just because your upper strut mounts are worn. Id also bet at 114K they're unlikely to be bad. if they are, you can replace the shock mounts at home easily with a floor jack and a rented spring compressor. A halfway decent set of coilovers that include camber plates are $1500 and up compared to new mounts at about $100 each IIRC. Also you have to take into account that coil overs totally change a car... for the most part worse unless the car is a track car or you have very very good roads and like to feel every imperfection. Most people for daily drivers do Koni SA shocks and struts, paired with H&R Sport springs with ground control camber plates or stock mounts.

The power steering pump could be squealing from being low on fluid if the lines are leaking. Leaking lines on these are extremely common and should be replaced. I'd check the fluid level for now and top up, if low, to avoid burning up the pump.

Also have to agree that your friend is just trying to waste your money.
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Old Tue, Mar-07-2017, 02:56:11 AM   #5
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Default Re: Dealer diag parts questions

Mmmm I don't know if I would go so far as to say the coilovers make a car worse. By my definition, they make it better. But if you're trying to stay stock just do the upper mounts.
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Old Tue, Mar-07-2017, 03:13:06 AM   #6
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Default Re: Dealer diag parts questions

I had the same noise last year...it was a tensioner. I did all drive belts and pulleys.

Re: the suspension. The question is really for you....what do you want? What do you do with the car? Track, AutoX? I have a 100% oem suspension. It was replaced by the previous owner who gave the dealer an open checkbook. (Struts, control arms, bushings all over, etc). It is perfect for my taste and driving. Firm but fair. The only thing I would change is a slightly lower ride height but to me it's not worth losing the "fairness" for just that. I'll live with it.
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Old Tue, Mar-07-2017, 03:34:55 AM   #7
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Default Re: Dealer diag parts questions

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Originally Posted by EY84002 View Post
I had the same noise last year...it was a tensioner. I did all drive belts and pulleys.

Re: the suspension. The question is really for you....what do you want? What do you do with the car? Track, AutoX? I have a 100% oem suspension. It was replaced by the previous owner who gave the dealer an open checkbook. (Struts, control arms, bushings all over, etc). It is perfect for my taste and driving. Firm but fair. The only thing I would change is a slightly lower ride height but to me it's not worth losing the "fairness" for just that. I'll live with it.
I plan to just use the vehicle as a daily driver during the warmer months here in NH.

Did you replaced both tensioners? Or just the pulleys / rollers?

Thank you for the help
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Old Tue, Mar-07-2017, 10:44:14 AM   #8
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Default Re: Dealer diag parts questions

Once you have the belts off you can tell which tensioner or pulley is bad, but if it's me, I'd replace them all. (but I'm made of money, and hate doing jobs twice.)
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Old Tue, Mar-07-2017, 12:46:05 PM   #9
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Default Re: Dealer diag parts questions

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Originally Posted by Richardsperry View Post
Once you have the belts off you can tell which tensioner or pulley is bad, but if it's me, I'd replace them all. (but I'm made of money, and hate doing jobs twice.)
how's the vette?
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Old Tue, Mar-07-2017, 02:37:27 PM   #10
Richardsperry
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Default Re: Dealer diag parts questions

WAY too much car...It's always bored. It's very fun, but if you actually use it, you're going to jail.
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Discussing Dealer diag parts questions in the E36 M3 (1992-1999) Forum - {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999 at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)