Very loud clanking noise from engine, belt drive - compressor?
#26
Anyway, last night I put on a new alternator, idler pulley, and tensioner pulley. With a simple torx t-50 bit with a .15" hole drilled (temper resistant torx screw on the tensioner pulley) in the center, the tensioner pulley can be removed from the bracket with out having to pull the compressor and intake to take the entire bracket off.
The sound is GONE!!!!
I would have liked to replace only one at a time to find the actual source of the problem but I wasn't going to do the work for a third time, as I just did an AC compressor job a few weeks ago.
Anyway, thanks for all the diagnosis help guys.
I recommend doing this to whoever has this wicked metal, screeching, clanking sound.
I ended up spending $200 on a german made bosch alternator, 28$ on the MB idler pulley, and $80 on the tensioner bracket assembly (although, I only used the pulley, so I'm going to try and match it up and put another one back on and then take it back)
Robert
Last edited by rabney72; 09-15-2010 at 09:12 AM.
#27
Super Moderator
If you gave the water pump pulley a twirl & it was quiet then you are good to go. Some have plastic impellers & some metal & I've seen them come right off the shaft on M111 & M271 engines. But you would hear it.
Pleased the noise is gone. Wish we knew the culprit.
Pleased the noise is gone. Wish we knew the culprit.
#28
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2005 c230k ss, 2005 Land Rover LR3, 2006 Honda S2000
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C230 Sportscoupe
It appears I have this same issue with my 2002 C230 Coupe.
Brought it to the dealership today and they quoted me $900 to replace the water pump, thermostat & gasket.
And another $900 to replace the Pulley tensioner, pullies, tensioner shock & belts.
oh boy...
I'm gonna take it to my indy and have them service it.
Brought it to the dealership today and they quoted me $900 to replace the water pump, thermostat & gasket.
And another $900 to replace the Pulley tensioner, pullies, tensioner shock & belts.
oh boy...
I'm gonna take it to my indy and have them service it.
#32
MBWorld Fanatic!
Belt Tensioner pulley is not sold separately. Entire tensioner along with the pulley is around $115 on RMeuropean dot com. Slightly higher on AutohausAZ dot com. On M112 engine and M272 engine, replacing the tensioner is not that hard. I am not sure about other engines.
#34
Yes you need a tamper t-50 torx (with a center hole). And you can get the tensioner pulley by itself at the dealer for 40$, it's named tensioner pulley kit...or something like that... An the idler is cheaper
#36
#37
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#38
#39
MBWorld Fanatic!
I looked up on EPC with that part number. It's a belt tensioner "parts kit" available for M271 engine only. That kit is not available for M112 or M272 engines :-(
#40
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05 C230 Kompressor
Just wanted to add to this. Rob, I fixed my idle issue I mentioned to you not long ago. Replaced the TB from another m271 1.8l with 56K miles. Cleaned it thoroughly and my rough idling and slight sluggish acceleration at take off is completely gone! The alternator and the water pump did definitely help along with replacing the tensioner and idler pulley. All in all, thanks for all your guys DIY posts, information and suggestions. Who could ask for more. Cheers!
-Chris
-Chris
#43
Just wanted to add to this. Rob, I fixed my idle issue I mentioned to you not long ago. Replaced the TB from another m271 1.8l with 56K miles. Cleaned it thoroughly and my rough idling and slight sluggish acceleration at take off is completely gone! The alternator and the water pump did definitely help along with replacing the tensioner and idler pulley. All in all, thanks for all your guys DIY posts, information and suggestions. Who could ask for more. Cheers!
-Chris
-Chris
Maybe I'll check out the tb and see if I can attempt my issue..
Glad your is working well
Rob
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05 C230 Kompressor
Great, so cleaning(or replacing ) the tb helped the idle? I can see it fixing the slight acceleration hesitation... Hmmm is it fly by wire? I would assume a gunked up idle air controller motor would be more a reason for idle roughness (which I also have and assumed it's time for a tune up, 70k)
Maybe I'll check out the tb and see if I can attempt my issue..
Glad your is working well
Rob
Maybe I'll check out the tb and see if I can attempt my issue..
Glad your is working well
Rob
-check and clean TB thoroughly.
-If you hear a sparking type of noise coming from the actuator attached to the right of the TB, it is likely you will need a replacement like mines.
Hope it works out brotha
Chris
#45
MBWorld Fanatic!
If a stream of oil is flowing thru the crankcase ventilation tubes in to the TB, indicating oil is burning, oil must be replenished/added quite often. No?
#47
Chris or Glyn, do you know if these cars have an idle air controller motor or do they use the tb instead? ( my 98 ford has a manual tb and so the idle control is done by a little stepper motor)
#48
Super Moderator
They use a fully active TB for idle, acceleration etc - fly by wire - and of course MAF & O2 sensors for AF ratio/fuel trim.
#49