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Old 02-14-2014, 01:52 PM   #1
jasonlau8023
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urgent! 03 540 loud engine noise, code found!

Hi,

This morning the engine light came on and the cars engine became extremely loud, codes are

C9 DMTL HEATING
75 SIGNAL, THROTTLE POTENTIOMETER
77 SIGNAL, THROTTLE POTENTIOMETER 2
21 FUNCTION, INLET-CAMSHAFT CONTROL, BANK 1
D2 SIGNAL, KNOCK SENSOR 1
D4 SIGNAL, KNOCK SENSOR 3

what should I replace?
Thanks!
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Old 02-21-2014, 09:38 PM   #2
ALPINA MAN
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its done, toasted and the end of your engine. finito la musica
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Old 02-21-2014, 09:54 PM   #3
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^^^yep, pretty much! Timing chain guides finally let go. Get it checked by a professional, but 99.9% sure your engine is done...
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Old 02-21-2014, 09:59 PM   #4
jasonlau8023
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thats what i expected too. replace the timing chain guide or replace the whole engine? really hate this car go!
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Old 02-21-2014, 10:22 PM   #5
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21 FUNCTION, INLET-CAMSHAFT CONTROL, BANK 1


Ouch
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Old 02-21-2014, 10:46 PM   #6
jasonlau8023
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whats that mean?
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Old 02-21-2014, 11:04 PM   #7
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Quote:
Originally Posted by jasonlau8023 View Post
thats what i expected too. replace the timing chain guide or replace the whole engine? really hate this car go!
All depends on how bad it was. You MIGHT be able to just replace the guides, or if the valves got bent, might as well replace the engine. In every case, you need several $K of repairs.
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Old 02-22-2014, 12:15 PM   #8
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Ouch because based on the other factors you mentioned (not the code alone as it can indicate other issues, on other models even), she's done. Mind you just about anything can be saved/rebuilt but you have to start factoring cost vs reward and that just never adds up when you are paying for all the labor on a rebuild senario. It's not like it's a $25k car and should be fixed, buy another motor (pull and drop youd be around $3k+ with misc stuff) and hope for the best . Or drive very close to a canal and hit the gas while rolling away from the car lol

As mention above a rebuild and replacement of guides, chain, valves etc usually points to just getting another motor.

I am sure someone in this thread can find you a motor
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Old 02-22-2014, 12:23 PM   #9
jasonlau8023
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haha the rolling away suggestion is funny. well, thank you all, and please let me know if you know someone can get me a used 540 engine. 03 is m62tu, right? what about pre-03? m62? can it be fit in my car?
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Old 02-23-2014, 12:48 AM   #10
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Chevy LS swap!
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Old 02-23-2014, 01:31 AM   #11
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If I recall there are at least two types for the e39 540i and one cannot be used in the other. I cannot recall what year the date switch over is but you may have a few years flex since you have an 03.

I believe you'll need one from a 99+ but don't quote me on that. I am sure someone here will nail down an exact date spread for you.
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Old 02-23-2014, 01:55 AM   #12
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I wonder who might have such a thing!? ROLF...J/K! It was too easy...

We have a few good ones in stock, ready to go.
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Old 02-23-2014, 11:45 AM   #13
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LOL, I suspect he didn't realize who you were.
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Old 02-23-2014, 02:28 PM   #14
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Was it giving you any signs of breaking down before or was it all just a surprise? How many kms are on the engine?
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