Gutted cat and CEL - TCCoA Forums
 
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post #1 of 12 (permalink) Old 04-17-2014, 09:28 PM Thread Starter
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Gutted cat and CEL

Hello, folks. Just curious, on 1997 4.6 Thunderbird if the cats were "gutted", the CEL would come on, right? The guy at the exhaust shop said that they wouldn't, but I thought that since it's got cats behind the catalytic converter, it would throw a code. I am sad that the mandrel exhaust place quit producing the hi flow x-pipe kits.

Thanks for your help.
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post #2 of 12 (permalink) Old 04-17-2014, 09:50 PM
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unless your cats are clogged there's no point gutting them. Yes, you'll throw codes.

-Matt
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post #3 of 12 (permalink) Old 04-17-2014, 09:55 PM Thread Starter
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Quote:
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unless your cats are clogged there's no point gutting them. Yes, you'll throw codes.
Figured as much. Thanks man.
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post #4 of 12 (permalink) Old 04-18-2014, 04:56 PM
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Quote:
Originally Posted by XR7-4.6 View Post
unless your cats are clogged there's no point gutting them. Yes, you'll throw codes.
Unless it was the unmonitored 3rd cat.

John
1996 TBird LX 4.6
2001 Sable Wagon 3.0 Duratec
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post #5 of 12 (permalink) Old 04-20-2014, 12:30 AM
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cel fix

They do sell o2 simulators that will make the computer think the cats are still there n won't turn the cel on. Or you can have it tuned and turn the rear o2's off. Simulators will probably be cheaper tho
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post #6 of 12 (permalink) Old 04-20-2014, 02:06 AM
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I use BBK mil eliminators on my DOHC swap t-bird with good results. I could have had them turned off in one of my tunes but it would have registered not supported as a PID on my emissions test instead of completed on the readiness status of the test. They function just fine, I've been using them since 2008 or so.

-1996 Pearl White Thunderbird 4.6 Sport 4v with many mods:
Current Best: 13.583 @ 103.74 10/2014.
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-2001 White Ford F-250 Super Duty 6.8 V10, 4-door, 4x4, Limo Tint, BFG KO2's, Bilstein 7100 Remote Reservoir Race Bypass Shocks, 6" Spring lift, Kenwood Double Din, K&N Intake, FlowMaster Exhaust
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post #7 of 12 (permalink) Old 04-20-2014, 08:56 PM Thread Starter
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I'm not going to worry about a tune right now because I'm not sure if I'm even going to keep the car in the near future. I'm wanting a Mark 7 or 8 currently, but can't find any in good shape locally. Excuse my ignorance, but where can I find these "simulators"? I found some for the Mustangs, but I'm not sure if they are interchangeable with the Thunderbirds and Cougars.

Thanks for all the help, guys.
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post #8 of 12 (permalink) Old 04-20-2014, 09:00 PM
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Mustang ones will work. There's not much to MIL eliminators, they're basically radioshack parts

-Matt
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post #9 of 12 (permalink) Old 04-21-2014, 09:35 AM
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Has anyone ever failed a "visual" inspection with the MIL eliminators in place?

Al

97 T-Bird LX 4.6 - 80k miles
94 Supra TT Auto - street/strip car
04 CVPI- Brenda's car - 76k miles
Previous Fords:
95 T-Bird LX 4.6 - fully optioned, owned 15 years, 220k miles
96 Cougar XR-7 4.6- Brenda's car, owned 11 years, 187k miles
88 T-Bird 3.8 - first T-Bird, owned 5 years, 206k miles
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post #10 of 12 (permalink) Old 04-21-2014, 02:39 PM
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Well if you have MIL eliminators you probably won't have cats, so they'd probably fail you for that lol

MIL eliminators pretty much blend in with the harness other than the extra inline connectors

-Matt
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post #11 of 12 (permalink) Old 04-21-2014, 08:31 PM
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Quote:
Originally Posted by XR7-4.6 View Post
Well if you have MIL eliminators you probably won't have cats, so they'd probably fail you for that lol

MIL eliminators pretty much blend in with the harness other than the extra inline connectors

-1996 Pearl White Thunderbird 4.6 Sport 4v with many mods:
Current Best: 13.583 @ 103.74 10/2014.
227hp/241tq measured on calibrated mustang dyno, tested at full vehicle simulation with inertia enabled, no number skewing.
-2001 White Ford F-250 Super Duty 6.8 V10, 4-door, 4x4, Limo Tint, BFG KO2's, Bilstein 7100 Remote Reservoir Race Bypass Shocks, 6" Spring lift, Kenwood Double Din, K&N Intake, FlowMaster Exhaust
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-2005 White GMC Sierra 3500 6.6 Duramax, Dually, 4-door, 4x4, Limo Tint, BFG Commercial T/A's, Rancho RS9000XL Shocks, Kenwood Double Din, K&N Intake, Banks Monster Exhaust
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post #12 of 12 (permalink) Old 04-22-2014, 07:39 AM
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I was referring to putting the MIL eliminators on the car to eliminate a code for the rear cat WITH the cats still in place.

Al

97 T-Bird LX 4.6 - 80k miles
94 Supra TT Auto - street/strip car
04 CVPI- Brenda's car - 76k miles
Previous Fords:
95 T-Bird LX 4.6 - fully optioned, owned 15 years, 220k miles
96 Cougar XR-7 4.6- Brenda's car, owned 11 years, 187k miles
88 T-Bird 3.8 - first T-Bird, owned 5 years, 206k miles
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