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General BMW Model Discussion
All non E46 BMW model questions in here. Look below for E36, E90 and F30 specific forum. For additional model specific forums check out bimmerfest.com!

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Old 07-06-2006, 05:32 AM   #1
Kain
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Few questions about my E39 M5

I don't know if I'm just being paranoid but I keep thinking that my 2000 M5 feels slower than other E39 M5s I have driven. I took it to the dealer and they said that one of the MAFs needed replacing and they also changed the engine and transmission mounts for vibration. After they fixed that, they said they did some acceleration tests and found the car to be fine. 1st and 2nd gear the car accelerates real hard but when I hit 3rd the amount of pull decreases. Maybe this is normal. I am trying to (safely) race some cars to find out if it's really fine.

What you say?
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Old 07-06-2006, 08:47 AM   #2
yayopwr
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it feels like mine is slower than it really is too after a certain speed
but after racing a ctsv that thought died out
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Old 07-06-2006, 10:07 AM   #3
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Check out M5board.com there's lots of members from Dubai there.

You might need an IATS kit check out www.ufmotorsport.com
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Old 07-06-2006, 11:10 AM   #4
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Okay, I also noticed today that after some hard driving, the car overheated. The engine/water temp was just below the red zone. Why is this?
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Old 07-06-2006, 01:41 PM   #5
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bad thermostat
i doubt the radiator
sensors?

no check engine lights?
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Old 07-07-2006, 05:28 PM   #6
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There are no check engine lights. BTW, my engine stills seems to cause vibration. I can feel the vibration in the gear nob and the clutch pedal. The clutch is slipping a lot and needs to be replaced, you think that if I replace the clutch and flywheel the engine vibration would disapear? The dealer said the vibration was caused my engine and tranny mounts (which they replaced) but it didn't completely fix the issue.

Secondly, to me, the throttle response doesn't feel very linear.

Last edited by Kain; 07-07-2006 at 05:31 PM.
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Old 07-09-2006, 09:00 PM   #7
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best bet for the clutch is to replace with a higher clamping force UUC unit. The OEM one is no different than the one used in the 540i and it slipped after moderate usage in that one too - a lighter flywheel also does wonders for that car (if you can live with the chatter).

Before anything though, rectify your overheating problem - the V8s are strong, but unfortunately prone to head gasket failure when overheated too often. Weak points in the coolant system are the radiator, thermostat, thermostat housing, coolant expansion reservoir and water pump - so I guess pretty much the entire coolant system is weak M5 radiators suffer the same ailments as E46 ones do - crappy plastic necks on filler spouts that break off, crappy thermostat housings that crack when overheated, etc.

One thing that you're just going to have to get used to with that engine is a certain lumpiness at idle - it's a big-ass, performance tuned v8, so a certain amount of "lope" can be expected. I would suggest finding another bimmer enthusiast in the area with an M5 and beg for a drive to see if it's any different.

But yeah - the M5board.com is great source for info, I'm sure they can help you out more there.
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Old 07-10-2006, 02:25 PM   #8
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Quote:
Originally Posted by supark
One thing that you're just going to have to get used to with that engine is a certain lumpiness at idle - it's a big-ass, performance tuned v8, so a certain amount of "lope" can be expected.


The S62 is one of the smoothest high performance V8s I've ever driven.

"Lope" can be attributed to rough idle (duh), Camshaft position sensor, O2 sensors, bad MAFs. All of which can occur with or with out a check engine light.

Like I said check out M5Board. There is an on going GB for MAFs at a huge discount that what you'd pay at the dealer. Also tons of technical information.
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Old 07-10-2006, 03:07 PM   #9
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Quote:
Originally Posted by Clem


The S62 is one of the smoothest high performance V8s I've ever driven.

"Lope" can be attributed to rough idle (duh), Camshaft position sensor, O2 sensors, bad MAFs. All of which can occur with or with out a check engine light.

Like I said check out M5Board. There is an on going GB for MAFs at a huge discount that what you'd pay at the dealer. Also tons of technical information.
Depends on what you consider as "lope" - yeah it's not a big american v8, but it definitely has a different character at idle than say an inline 6 bmw engine. Perceptions can differ across people - that's why I suggested just seeing if he can find a local M5 that he can test drive in addition to checking out the M5board - there's only so much that you can describe in words.
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Old 07-10-2006, 03:20 PM   #10
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Gustav (who basically runs M5Board) seems to be quite gay. Why you ask? Because he disabled my account (not really banned) without any warning. I can login but can't post anything. I e-mailed him asking WTF is happening and he said I post useless info when all I was doing was asking stuff about my car like I am doing here. I e-mailed him back asking him WTF he meant and he never replied.
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Old 07-10-2006, 03:52 PM   #11
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Okay, I just noticed something new about my car. The rear lights (not brake lights) sometimes flicker one at a time as in turn on and then off when the lights are suppose to be off. Does this mean my car has some sort of electrical issue?

EDIT: Few other things you should know.

1. My instrument cluster is unresponsive. Meaning the speedometer moves in "steps" of 2-3 km/h and the rpm gauge gets stuck around 6000 rpm and I can hit the rev-limiter when it is only showing like 6200 rpm. Same goes for the fuel gauge, when I was re-fueling it was moving up in "steps" too.

2. The throttle does not feel very linear.

3. The engine temp gauge went just below the red zone during hard driving.

4. The outside temp reads too high.

It seems that all these are electrical issues. I might have to change some plug, any guesses on what it could be?

Last edited by Kain; 07-10-2006 at 04:11 PM.
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Old 07-10-2006, 06:54 PM   #12
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Wow I'm suprised to hear that about Gustav. He's always been quite "cool" to me.

Maybe it's time for a trip to the dealer. That's a lot of issues with 1 car. Did you buy it used? New? Handed down?
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Old 07-10-2006, 07:01 PM   #13
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used.
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Old 07-11-2006, 04:11 AM   #14
Kain
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If this car turns out to be too problematic, I'll probably sell it and buy an Imola Red M5 that has been on sale for quite some time. I've driven it and it is way smoother for some reason.
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Old 07-11-2006, 10:16 AM   #15
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Hey Kain, where is this Imola Red M ?
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Old 07-11-2006, 10:28 AM   #16
Kain
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It's a 1999 model. It's somewhere in Dubai. It drives great but the actual condition of the car isn't great. He put a new clutch and flywheel recently and that could explain why it drives better than mine. I am installing a new clutch and flywheel next week and if it still isn't good, I'm gonna sell it.
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