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32 Posts
Hello guys, so I've been having this recurring problem where my B9 (116,00 miles) will shake when I start it up from cold. The shaking will occur for about 15-20 seconds, then will run perfectly fine afterwards. The shake feels as if a cylinder is misfiring or not firing. On the rare occasion that the shaking lasts for more than 30 seconds, my CEL will flash and a cylinder 3 misfire will pop up. There are times when it starts up perfectly fine with no shaking however. Starting the engine warm will not cause shaking.
I've already replaced the coil pack and fuel injector for cylinder 3, but if when the CEL comes on it still indicates cylinder 3 misfire. The car does not show any of the signs of a failed head gasket that I've researched such as bubbles in coolant reservoir, coolant mixing with oil, overheating, coolant loss, etc. so I'm ruling that out.
I'm hoping that the problem has to due with the spark plugs. The plugs have about 9,000 miles since I've replaced them, but they are Autolite plugs that are compatible (bought at O'Reillys) and not the NGKs.
I'm hoping you guys can chime in and help me solve this once and for all, since this is the only problem left to fix after spending $2,000 to get my timing chain tensioners, guides, and all related components and seals replaced. Thank you.
I've already replaced the coil pack and fuel injector for cylinder 3, but if when the CEL comes on it still indicates cylinder 3 misfire. The car does not show any of the signs of a failed head gasket that I've researched such as bubbles in coolant reservoir, coolant mixing with oil, overheating, coolant loss, etc. so I'm ruling that out.
I'm hoping that the problem has to due with the spark plugs. The plugs have about 9,000 miles since I've replaced them, but they are Autolite plugs that are compatible (bought at O'Reillys) and not the NGKs.
I'm hoping you guys can chime in and help me solve this once and for all, since this is the only problem left to fix after spending $2,000 to get my timing chain tensioners, guides, and all related components and seals replaced. Thank you.