W202 C43 AMG terrible screeching noise
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Newbie
Joined: Sep 2019
Posts: 6
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1999 C43 AMG, 2011 C63 AMG, 2004 ferrari 360
W202 C43 AMG terrible screeching noise
Hi I’m looking for help
Looking for help or an expert on the m113 platform and or w202 C43 AMG platform.
I recently supercharged my 1999 C43 AMG with a gen 1 HPS supercharger, since supercharging the car I have been having a terrible screeching noise coming from the trans tunnel passenger side of the car. I can’t locate the sound and have been trying for months now replacing part after part on the C43 to see if I can’t stop the sound.
The list of replaced items are as follows: rear main seal, transmission was swapped to a stronger w210 e55 transmission (1999), when the transmission was swapped a new conductor plate filter and pin connector were also replaced, 2 of the 8 injectors were replaced and the remaining 6 were cleaned, the transmission oil cooler was also replaced today with oem parts. Ac condenser was replaced, idlers were replaced, idler belt was replaced,
Oil was changed coolant was flushed.
If anyone has any knowledge of what this sound could be I’d be extremely grateful.
I am willing to take the car to a professional or have them come to me.
Thank you guys again for the help will post a video when I get them time of the noise from different angles
Looking for help or an expert on the m113 platform and or w202 C43 AMG platform.
I recently supercharged my 1999 C43 AMG with a gen 1 HPS supercharger, since supercharging the car I have been having a terrible screeching noise coming from the trans tunnel passenger side of the car. I can’t locate the sound and have been trying for months now replacing part after part on the C43 to see if I can’t stop the sound.
The list of replaced items are as follows: rear main seal, transmission was swapped to a stronger w210 e55 transmission (1999), when the transmission was swapped a new conductor plate filter and pin connector were also replaced, 2 of the 8 injectors were replaced and the remaining 6 were cleaned, the transmission oil cooler was also replaced today with oem parts. Ac condenser was replaced, idlers were replaced, idler belt was replaced,
Oil was changed coolant was flushed.
If anyone has any knowledge of what this sound could be I’d be extremely grateful.
I am willing to take the car to a professional or have them come to me.
Thank you guys again for the help will post a video when I get them time of the noise from different angles
Thread Starter
Newbie
Joined: Sep 2019
Posts: 6
Likes: 1
1999 C43 AMG, 2011 C63 AMG, 2004 ferrari 360
This is a few examples of the sound the car is making
Sound is mostly evident on warm up, cold start the car sounds healthy no hesitations of the sort. After about 10 minutes of idle warm up no load on the car the sound will start appearing. Coolant temperatures are normal at this point. Sound appears to be coming from the trans tunnel area/ behind the supercharger/ by the fire wall of the car. Sound becomes louder when you go under the car, but this may just be resonance when the car is against a surface. Any advice or help would be appreciated.
MBWorld Fanatic!
Joined: Apr 2006
Posts: 1,101
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From: Bay Area, CA
98 C43, 15 Alfa 4C LE, 18 Tesla Model 3 DM Perf, 08 Duc S1000, 02 Duc 998, 98 Duc 748, 01 Miata
Does the sound change with engine speed or vehicle speed? If you put the car in neutral, does it still make the sound?
MBWorld Fanatic!
Joined: Mar 2010
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From: Land of mountains, cheese, chocolate and watches
12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)
Wondering if the noise could be from the torque convertor or the ring which fixes to the flywheel. Not talking of the starter cog wheel on the flywheel,even if this does need a special greasing it seems from time to time
Member
Joined: Mar 2005
Posts: 173
Likes: 34
From: Friendswood, TX
99 C43, 73 911 targa
My experience with German cars: Look at the last thing you fixed / added / changed / modified. In this case that supercharger and all the related work. I don't think the C43 is prone to screeching, from what I have seen on here..
