rough idle help please
Thread Starter
Instructor
Joined: Sep 2018
Posts: 244
Likes: 21
From: Tampa, Fl
Thread Starter
Instructor
Joined: Sep 2018
Posts: 244
Likes: 21
From: Tampa, Fl
Back again, coils checked out fine, took it to a dealer for an inspection and they told me cylinders 5 and 7 were misfiring from bad injectors. they replaced them and it ran fine for a while but now its misfiring again... the cam, valve springs and lifters all checked out in good condition. I'm starting to lose my head over this...
1st Gear
Joined: May 2019
Posts: 1
Likes: 0
Back again, coils checked out fine, took it to a dealer for an inspection and they told me cylinders 5 and 7 were misfiring from bad injectors. they replaced them and it ran fine for a while but now its misfiring again... the cam, valve springs and lifters all checked out in good condition. I'm starting to lose my head over this...
Melting Slicks
Joined: Dec 2013
Posts: 2,232
Likes: 315
From: Bridgewater New Jersey
Back again, coils checked out fine, took it to a dealer for an inspection and they told me cylinders 5 and 7 were misfiring from bad injectors. they replaced them and it ran fine for a while but now its misfiring again... the cam, valve springs and lifters all checked out in good condition. I'm starting to lose my head over this...
Instructor
Joined: Sep 2017
Posts: 224
Likes: 44
From: Port Moody
Load torque pro onto your phone and get an adapter so you can read codes. If you get a small evap emission leak it means probably the purge solenoid has failed which is a common failure Iam on my 3rd one in 3 years, or possibly the charcoal canister for the fuel system is toast. This allows fuel vapor into the engine intermittently and it will run rough.
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Melting Slicks
Joined: Dec 2013
Posts: 2,232
Likes: 315
From: Bridgewater New Jersey
Since the issue is only on one side of the engine, maybe check the electrical connectors of the harness that are leading to the injectors and the coil bank, pull them apart check for cleanliness.
Intermediate
Joined: Apr 2019
Posts: 44
Likes: 2
From: Los Angeles
I have the same amount of miles. It’s an 07 and I noticed at idle my engine would shake for a bit. Had my motor mounts changed and now it’s nice and smooth! One was popped and leaking the other one was on its way.
Thread Starter
Instructor
Joined: Sep 2018
Posts: 244
Likes: 21
From: Tampa, Fl
So I'm reviving this thread because I finally found the issue and wanted to let people know where to look if they have a similar issue. Accompanying my misfires I also had some strange sounds coming from my drivetrain but never really paid it any mind. welp turns out that my torque tube is starting to wear out which while idling caused it to vibrate a lot and produce the misfires in the engine along with the "service traction and active handling" light. My hope by telling you all this is that hopefully no one esle has to spend 1+ years trying to track down a misfire issue.
Instructor
Joined: Jul 2020
Posts: 174
Likes: 51
From: Washington DC Area
Thank you for the update on your issue. As a newer Vette owner, I tend to read over threads regarding items to look out for and issues others have with older Vettes. I did some Torque Tube googling after your mentioned this and learned alot about other maintenance items to keep in the back of my mind if I have similar issues in the future.
Hope your car is all squared away now and you are back to a miles of smiles!
Hope your car is all squared away now and you are back to a miles of smiles!