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Old 11-13-2012, 10:39 AM   #1
Scooby Newbie
Member#: 308298
Join Date: Jan 2012
Location: Fitchburg, MA
2008 3.0R Limited

Default knock on shut off

Forgive me if this is the wrong thread.

But what would possibily explain a knock when shutting the car off when running 93. But also disappeared when using 91 instead?. Stupid question I'm sure. But has anyone has this problem, I thought it could be an internal component knock, but like I said it went away when I put in 91 on two fillups, one at a half tank and the other on a quarter tank. Since going back to 93 I haven't heard the knock on shutoff. I will note that I am hitting the boost point I should be (automatic trans, 180k on motor).

It just baffled me that it when it went away, could it have been bad gas since I got the car which I highly doubt since I've owned the car since last year and put on 20k from may of 2011 to now.

I thought it was something normal but after if went away, it is something more? Or something I should just over look for now
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Jordanu is offline   Reply With Quote