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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 04-11-2013, 07:46 AM   #1
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Join Date: Mar 2013
Location: Las Vegas
Posts: 5
My Ride: E46 M3
Replacing entire cooling system. Anything else I should replace as well?

hello everyone! this is actually my first real post on the forum. just picked up my imola red e46 m3 not too long ago and i love it! been doing all the maintenance that i can before i start hooking this baby up lol. so enough with that jazz..

my car has 94xxx miles. i am planning to replace my entire cooling system: radiatior, water pump, expansion tank, hoses, sensors, t-stat. is there anything else you folks would recommend replacing at the same time while i am down there? i am simply trying to minimize the amount of work and downtime that my car has by doing everything that i can while i have access to that area of the engine.

since my m3 is my daily i just want to make sure EVERYTHING that has possibility of failing has been addressed for my peace of mind . it seems that the e46 m3 has many common catastrophic problems that can be remedied by proactively doing certain things that can save you in the long run. is there anything else i should do besides the entire cooling system at that time?

any suggestions are greatly appreciated! thanks in advanced!

Imola Red E46 ///M3 6 speed.

Last edited by IRM3AN; 04-11-2013 at 07:48 AM.
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Old 04-11-2013, 07:54 AM   #2
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Join Date: Jan 2011
Location: Illinois
Posts: 494
My Ride: 330i
Maybe pulleys and belts. With 94,xxx maybe even alternator.
Since there so easy to get to with radiator out. And fairly inexpensive

Last edited by AudiEtr; 04-11-2013 at 07:58 AM.
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Old 04-11-2013, 07:56 AM   #3
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Vcg. Depends on the service history. Do you have proof of the last inspection.

Last edited by choxor; 04-11-2013 at 07:57 AM.
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Old 04-12-2013, 10:47 AM   #4
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Thanks for the replies. So belts and tensioner. Nothing else you guys think?

Imola Red E46 ///M3 6 speed.
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Old 04-12-2013, 11:07 AM   #5
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Idler pulley, tensioner and belts. Also, check your power steering cap. If there's a lot of build up on it you have to replace the seal on the cap. It's less than a dollar and takes 30 seconds to replace. When was your last valve adjustment? I'd change the spark plugs if they haven't been changed.
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