Engine is Misfiring
Thread Starter
Staging Lane
Joined: Nov 2010
Posts: 84
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From: Phoenix, AZ
Engine is Misfiring I've got a 2002 Camaro Z28 with an LS1. The engine misfires bad. The engine as well as the whole car shakes because of it. Now I've changed the spark plugs and the wires and it still misfires. It runs a little smoother now, but I can still tell that the misfire is still present and the the engine shuts off when I rev it at high RPMs. I'm thinking that the ignition coil packs need to be replaced, but haven't done so yet since it will be expensive to replace all eight of them. Tell me your opinions. Thanks.
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
If it were my car, I'd hook up a scanner and look at specific cylinder misfire data and DTCs, for starters. My next steps would depend on the results of that data.
Joined: Nov 2001
Posts: 34,643
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From: Schiller Park, ILL Member: #317
On the other hand, a bad/clogged cat(s) could cause the issues you're having. So if you are getting cat related codes in addition to the poor engine behavior you've mentioned above, I would suspect a possible bad cat(s).
Thread Starter
Staging Lane
Joined: Nov 2010
Posts: 84
Likes: 0
From: Phoenix, AZ
I'm thinking that a clogged cat is the problem. When I got it scanned for codes, it said that my cat sensor was not getting any voltage and now it doesn't throw that code anymore. The exhaust really stinks and it leaks out the tailpipe when it starts up. I took it to a shop to get it diagnosed, I should know what the problem is by tomorrow.
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I've got a 2002 Camaro Z28 with an LS1. The engine misfires bad. The engine as well as the whole car shakes because of it. Now I've changed the spark plugs and the wires and it still misfires. It runs a little smoother now, but I can still tell that the misfire is still present and the the engine shuts off when I rev it at high RPMs. I'm thinking that the ignition coil packs need to be replaced, but haven't done so yet since it will be expensive to replace all eight of them. Tell me your opinions. Thanks.
Thread Starter
Staging Lane
Joined: Nov 2010
Posts: 84
Likes: 0
From: Phoenix, AZ
