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Weird tapping/hitting from floormat area????

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Old May 14, 2022 | 11:28 PM
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Default Weird tapping/hitting from floormat area????

Just got the xpipe and axleback installed. While idling, I had weird tapping? hitting? feeling coming from the bottom the car. Specifically middle of driver side floor mat. I was able to feel it with my foot. What this could be????????? It's C Delete xpipe if that matters.

Thanks in advance!
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Old May 14, 2022 | 11:59 PM
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It sounds like something is hitting the tunnel plate, need to get it on a lift.
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Old May 15, 2022 | 12:05 PM
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Originally Posted by BearZ06
It sounds like something is hitting the tunnel plate, need to get it on a lift.
do our cars come with knock sensor? Wondering if it's going to trigger the knock sensor
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Old May 15, 2022 | 04:35 PM
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I had a rattling recently, turned out a few of my my tunnel plate bolts had backed out.
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Old May 16, 2022 | 12:42 PM
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Originally Posted by CavalierKing
I had a rattling recently, turned out a few of my my tunnel plate bolts had backed out.
Check that and also the bolts that attach the chassis brace. There is one end of that brace under the driver's side floor mat like you described and mine was loose after my header install. Made a rattle from the washer rattling against the bolt had right under my feet while driving. You don't have to lift it up to see that either so it's worth a check!
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Old May 16, 2022 | 02:11 PM
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Originally Posted by 2ZORNOT2Z
Check that and also the bolts that attach the chassis brace. There is one end of that brace under the driver's side floor mat like you described and mine was loose after my header install. Made a rattle from the washer rattling against the bolt had right under my feet while driving. You don't have to lift it up to see that either so it's worth a check!
Can you provide me a picture of where that bolt is located?
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Old May 17, 2022 | 05:25 PM
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Originally Posted by minkim1905
Can you provide me a picture of where that bolt is located?
I actually sold my Z06 a couple weeks back so can't take a pic of it for you but if you look under the car on the driver's side just a bit towards the center of the car behind the front wheel you'll see a flat metal cross brace that runs from right under where you're feet would be when driving at an angle to under the engine. There's a chassis brace like that on both sides of the car. I was able to reach it with a socket wrench but barely and I have long arms.
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