-PROBLEM- Rough Idle
Thread Starter
Race Director
Joined: Apr 2004
Posts: 16,135
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From: Newberry FL
Cruise-In VIII Veteran
St. Jude Donor '07
-PROBLEM- Rough Idle
As I have posted a few things about this over the last two days, I have more to offer in information to try and help me pin-point the problem.
I replaced the intake with an LS6 and added B&B Shorties. I have had a rough idle since install (two days ago) and back-firing.
Yesterday, I had several replies to check wires (MSD 8.5, less than 5,000 miles on them) and to check plugs (Iridiums with the same amount of miles), I found one plug that the tip was slight unscrewed, so I fixed that and the back-firing is gone.
Now, I have the rough idle from take-off, but the car runs fine at highway speeds. I checked everything on the car, took intake off and made sure everything was on correctly and my check engine light is gone, but I still have a p0300-multiple misfire code on the diablo.
I am going to check everything on the exhaust side today. If I accidently crossed the O2 sensors after the cats, would this cause a problem?
Any ideas?
Micah
I replaced the intake with an LS6 and added B&B Shorties. I have had a rough idle since install (two days ago) and back-firing.
Yesterday, I had several replies to check wires (MSD 8.5, less than 5,000 miles on them) and to check plugs (Iridiums with the same amount of miles), I found one plug that the tip was slight unscrewed, so I fixed that and the back-firing is gone.
Now, I have the rough idle from take-off, but the car runs fine at highway speeds. I checked everything on the car, took intake off and made sure everything was on correctly and my check engine light is gone, but I still have a p0300-multiple misfire code on the diablo.
I am going to check everything on the exhaust side today. If I accidently crossed the O2 sensors after the cats, would this cause a problem?
Any ideas?
Micah
