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2007 Honda Accord vibrates really bad when put in drive or reverse, but when in park it doesn't. Even turning the AC on makes the vibration/noise worse. Any advice?

  • Welcome to Motor Vehicle Maintenance & Repair! Is the check engine light on? If so, have you read the codes? If you haven't, get them read and please let us know what they are. At a guess, I'd suggest you might have a bad coil/plug/injector on one cylinder, but that's a guess ... you really don't give us much to go on here. – Pᴀᴜʟsᴛᴇʀ2 Oct 18 at 12:46
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This is a hard one with what little information there is to go on. Sounds like a misfire but usually (especially with a 4 cylinder engine) you would feel it at idle in park if it was a totally dead cylinder. First thing I would do is unplug the coils, crank the engine over for a few seconds and listen to it, I’ve seen plenty of these Hondas partially loose compression on a cylinder due to timing issues and with a good ear you’ll hear it clear as day when cranking it, it’ll sound consistent for the most part but you’ll get a random jump is crank speed for every revolution, it’s hard to explain over text but I hope this helps..

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