W211 AMG Discuss the W211 AMG's such as the E55 and the E63

Weird vibration

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Old Dec 16, 2023 | 01:48 PM
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Looking to buy a CLS55/63
Weird vibration

I'm getting a weird vibration from 1500rpms to about 2000 rpms regardless if the car is in gear, neutral or park.
motor and Trans mounts new
Wires new
Plugs new
I kinda noticed it after I swapped the conductor plate a while back. Does it sound like perhaps a TQ converter or the TQ converter solenoid? I have zero codes on the car but occasionally the idle will stumble and surge to catch itself.

I'm really just trying get this car 100% but it's always something.
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Old Dec 17, 2023 | 08:56 AM
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2005 e55 AMG
Not trans if it does it in neutral or park.

Last edited by SICAMG; Dec 17, 2023 at 09:01 AM.
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Old Dec 17, 2023 | 08:58 AM
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Originally Posted by SICAMG
Not trans if it does it in neutral.
someone suggested secondary Air intake system.
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Old Dec 18, 2023 | 02:35 AM
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95 SL600
Not sure how the secondary air would create an engine vibration at 1500 to 2000rpm or any engine vibration for that matter. The secondary air just introduces air into the exhaust to light the cats,

I have a 2003 m113 in an SL500 that has the same harmonic vibration, it also feels like the converter. Everyone says an oem trans mount will cure this, I have an aftermarket one in there.
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Old Dec 18, 2023 | 06:36 AM
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Originally Posted by cdk4219
Not sure how the secondary air would create an engine vibration at 1500 to 2000rpm or any engine vibration for that matter. The secondary air just introduces air into the exhaust to light the cats,

I have a 2003 m113 in an SL500 that has the same harmonic vibration, it also feels like the converter. Everyone says an oem trans mount will cure this, I have an aftermarket one in there.
Allegedly the SAI can change the AF mixture causing a subtle misfire in those RPM ranges. Dunno..
I have been told by several people hat if it does it in nuetral it's not the transmission or tourqe converter. Which it does do it in nuetral. Im gonna try an oem transmission mount next since its cheap and only a few bolts. The vibration is very subtle, but I notice it.

Last edited by Jerseyjules; Dec 18, 2023 at 06:39 AM.
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