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PLAGUE PHANTOM
PostPosted: Sat Feb 18, 2012 9:07 am 
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Location: Indianapolis, IN
Year and Trim: 1968 Chevrolet Bel Air
THe reason why is because my cat is going bad. About time the factory cat goes bad. Time for a new exhaust system :banana: :bwoohoo:

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Jrs3800
PostPosted: Sat Feb 18, 2012 10:07 am 
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Location: Space Coast, or at least it used to be
Year and Trim: 03 SLE, 95 SE, 95 TS SE
are you certain that this is the case?
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PLAGUE PHANTOM
PostPosted: Sat Feb 18, 2012 10:09 am 
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Location: Indianapolis, IN
Year and Trim: 1968 Chevrolet Bel Air
Yup. It sounds like a blender filled with nails and it glows red. Also bogs my car bogs when accelerating. Fuel filter was changed recently.

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Jrs3800
PostPosted: Sat Feb 18, 2012 10:14 am 
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Location: Space Coast, or at least it used to be
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well I think you have other fueling issues causing that problem.. That of course will destroy the converter... Once you get another cat you need to make sure everything is up to snuff, even before you mod...
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PLAGUE PHANTOM
PostPosted: Sat Feb 18, 2012 10:18 am 
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Location: Indianapolis, IN
Year and Trim: 1968 Chevrolet Bel Air
So far i have a freshly rebuilt series 2 motor w/ new plugs and wires. Both my 02 sensors have been on the car since it left the factory. Previous owner said he drove the car for 3 years with lean bank SES codes and neglected to fix the problem (on the motor that blew).

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1997 Bonneville SLE...(SilverStreak)...Totaled...1/25/13...Gone but not forgotten.
1968 Chevrolet Bel Air....the project
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Jrs3800
PostPosted: Sat Feb 18, 2012 10:22 am 
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Location: Space Coast, or at least it used to be
Year and Trim: 03 SLE, 95 SE, 95 TS SE
You need to fix that before you fry something....
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PLAGUE PHANTOM
PostPosted: Sat Feb 18, 2012 10:35 am 
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Location: Indianapolis, IN
Year and Trim: 1968 Chevrolet Bel Air
Fix what? Both 02 sensors and the cat? (Sorry i just woke up)

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00Beast
PostPosted: Sat Feb 18, 2012 11:36 am 
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Year and Trim: '17 Silverado 1500
Replace the front O2. The rear just monitors the cat.

The lean condition is what killed your motor....

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jedwards83
PostPosted: Sat Feb 18, 2012 2:09 pm 
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Year and Trim: Currently searching for a Bonneville...
Winter brings my gas mileage down to about 22-23.. 25-26 in the summertime.

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