What causes my car to shake when in idle? (I need real help!)
When I stop at a light or stop sign, my car vibrates. When i put the car in park or neutral the shaking goes away. The seats and steering wheel vibrates. When I turn the a/c on, it shakes even worse. I cant even lay my head on the headrest due to the annoying shaking. I replaced the fuel injectors, replaced fuel filter, MAF, new spark plugs Bosch Platinum +4 from warn out Hyundai dealership NKGs. I even had the dealership check the shaking out. They said my engine mounts were not broken and were good. They couldnt find anything wrong.
I noticed after installing the new spark plugs, the idle is about 40% better, but its still there. I even changed my stock intake to one of those $9.99 CAI from ebay to try to fix the issue. Shaking still here.
I had two questions:
1. The $9.99 CAI from ebay comes with a blue cone/filter. My question is it worth to replace this cheap cone with a $50 K & N filter from Autozone, will I get better performance? I also notice I wheezing noise coming from that blue cone. Could it be the cheap material on the cone killing air performance?
2. What should i check for the shaking? Im planning just to bring it in to this Tires Plus, since the guy said he could check it out for $12.
Re: What causes my car to shake when in idle? (I need real help!)
no it is not. the knock sensor is located in the block in a coolant passage. on the strut tower it is the aqcceleration sensor. i lets the ECU know when there is a lot of road vibration so it does not assume it is engine knock and adjust the timing. i guess you can say it is a knock sesnor aid. but it is not a knock sesnor
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