Idle Vibration
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Joined: Jun 2023
Posts: 12
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ML 350 2014
Idle Vibration
Hello, so what I want to tell you guys is that I'm having a problem with my SUV. Basically, what happens is that only when I have my AC on and it's in park, the whole car will vibrate. Like you can hear the vibration coming from behind. So I thought it was an exhaust thing because like I saw some forum here that said they had the same problem. But I got my exhaust system all checked and I have everything is good. So the guy told me to go like check an AC guy because when we turn off the AC, the car would be super normal. So in park, in reverse, nothing. The only issue is that the car vibrates when you're in park and you have the AC on because like I sit in my car like for like one to two hours with the AC on. So it's a very, very annoying. So what do you think about that? Anybody got the same issue?
he told me might be engine mounts … but I dont think so as the car drives super smooth with no ac, never vibrates on cold starts never vibrates on brakes or in park if the AC is off.
he told me might be engine mounts … but I dont think so as the car drives super smooth with no ac, never vibrates on cold starts never vibrates on brakes or in park if the AC is off.
Out Of Control!!
Joined: Apr 2019
Posts: 11,957
Likes: 6,796
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Hello, so what I want to tell you guys is that I'm having a problem with my SUV. Basically, what happens is that only when I have my AC on and it's in park, the whole car will vibrate. Like you can hear the vibration coming from behind. So I thought it was an exhaust thing because like I saw some forum here that said they had the same problem. But I got my exhaust system all checked and I have everything is good. So the guy told me to go like check an AC guy because when we turn off the AC, the car would be super normal. So in park, in reverse, nothing. The only issue is that the car vibrates when you're in park and you have the AC on because like I sit in my car like for like one to two hours with the AC on. So it's a very, very annoying. So what do you think about that? Anybody got the same issue?
he told me might be engine mounts … but I dont think so as the car drives super smooth with no ac, never vibrates on cold starts never vibrates on brakes or in park if the AC is off.
he told me might be engine mounts … but I dont think so as the car drives super smooth with no ac, never vibrates on cold starts never vibrates on brakes or in park if the AC is off.
- what's your current mileage ?
- what scheduled maintenance has been done so far?
- what are the active fault codes ?
- How old is your tranny mount?
BTW. when you idle your engine on A/C for two hours, know that cylinders are then hardly lubricated, only dry-lubed at most.
