ok after I got my headers installed yesterday all was fine. But today when I fired her up the car was idling VERY ROUGH like a constant vibration when sitting at a stop light. Then the SES light came on. Anybody have any idea what is causing this problem? I am going to try to take the car to the shop today where it was installed to have them figure it out but I wanna try to get an idea of what it is.

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AOLIM: iamg0rt
2002 Silver Z28 with some mods to make it rumble

 

The same thing happened when I had my 95 Z28. What it ended up being is that one of the O2 sensors were damaged during the install. I replaced all of the O2 sensors so that ther wasn't any variance from one side to the other. It ran fine after that.

Good Luck!



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2001 Z28 Camaro w/A4
Navy blue, chrome wheels, t-tops, leather seats, CD changer, 3.23 performance rear end, etc…
Mods: Suncoast SS Hood, Ram Air Box, K & N Filter, Flowmaster Exhaust, SLP Y-Pipe, Hypertech Programmer and Nitto Drag Radials.
Best Timew/Whisper lid & Flowmaster Exhaust Only)
1/4 mile – 13.26
MPH – 104.64
60 ft – 1.975
Pictures of car: http://community.webshots.com/user/kraft109

 

You might also want to check for exhaust
leaks that would give the O2's a bad reading.
After the first couple heat cycles, the
header bolts sometimes loosen up.

my $.02

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'94Z-28 MM6,LT1 Hot Cam
Mac Headers,13.28sec SOLD
New car '98Z-28 Conv.

 

The problem may be caused by one or more spark plug wires in contact with a header tube. This would explain why the car ran well for a short time after the headers were installed. Perhaps a wire burned thru and is now shorting against the header. The SES light could be the result of the misfire occurring in the affected cylinder.

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1986 Buick Regal T-Type TE44, .030" TRW's, 43 lb injectors, ATR Downpipe, wastegate, ram air and exhaust, Lubrant chips, custom converter by Alan, Hot-wired 340 fuel pump, Bilstein shocks, GNX wheels, Ultralite gauges, and the whole METCO catalog
New Better Faster Engine Under Construction

1987 Buick Regal Turbo T 'Old Gray' GM Hi-Tech Performance magazine's project car - Ron Joseph bullet, Stage 5 60-1 turbo, DeQuick VR4 intercooler, Level 10 trans and converter, staged double pumper fuel system, 55 lb injectors, Bilstein shocks, Ultralite gauges, and the whole METCO catalog

2002 Camaro SS Sebring Silver hardtop with ebony leather, Hurst shifter, SLP lid, bellows, and ATS adapter, PS filter, CAGS!, BMR chrome-moly STB, METCO LCA's and bolt-in driveshaft loop

 

I just took it back to the shop that installed the headers and they plugged autotap into it. The #1 plug was loose and came out, 5 minute fix no more rough idle.