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Re: P0420 and the dealership...
#1249719 04/20/05 01:13 PM
Joined: Aug 2002
Posts: 1,508
The Ninth State
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Ed98.5SVT Offline
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The Ninth State
Good thing I had mine done in March of '04 then.

1998.5 E1 SVT Contour #5482/6535
Re: P0420 and the dealership...
#1249720 04/21/05 05:59 PM
Joined: Nov 2001
Posts: 875
ohio
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bkent_dup1 Offline OP
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ohio
Good News, I guess.

I took my car in today and was told it was my cat, not pre cats. They need to order the parts.

Is the main cat before the Y pipe?

Anyways, no charge today or next visit when I get new cat...

2000 CSVT #1172 of 2150 Toreador Red Birthday 1/4/2000 *Drop in K&N/FMS Wires/AutolitePP Plugs *Sylvania SilverStar/Indiglo Gauges *Pioneer Premier P730/Sound by Audiobahn *White HVAC Panel/Elky Mesh Mod/35% tint
Re: P0420 and the dealership...
#1249721 04/22/05 12:03 PM
Joined: Sep 2002
Posts: 1,788
St. Louis, MO
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projectSHO89_dup1 Offline
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The single, main cat is AFTER both pre-cats and AFTER the downstream O2 sensors. It is impossible for the main cat to trigger the P0420 code. Unless the dealership technician found additionals faults that lead him to that diagnosis, there is nothing that you have said that would indicate a main cat failure.

If they are replacing the main cat due to the P0420 code, their diagnosis is faulty.

Steve

98 Contour SE Sport 2.5 Duratec ATX The wifey's car 89 Taurus SHO - 246K miles 94 SHO ATX - 190K 1997 F-150 5.4L ATX - The Workhorse 150K. ANY THREAD WITH "OMG" or "WTF" ETC IN THE TITLE WILL BE IGNORED!
Re: P0420 and the dealership...
#1249722 04/22/05 01:57 PM
Joined: Nov 2001
Posts: 875
ohio
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bkent_dup1 Offline OP
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ohio
I would assume they tested the temp of pre cats, and main cat.

Anyone have a diagram or picture showing all the cats?

2000 CSVT #1172 of 2150 Toreador Red Birthday 1/4/2000 *Drop in K&N/FMS Wires/AutolitePP Plugs *Sylvania SilverStar/Indiglo Gauges *Pioneer Premier P730/Sound by Audiobahn *White HVAC Panel/Elky Mesh Mod/35% tint
Re: P0420 and the dealership...
#1249723 04/22/05 02:51 PM
Joined: Jul 2000
Posts: 1,786
In B4 Da Lock!!!
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Hightower GT Offline
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Ummm... rear bank, lower O2 sensor???

Bueller?

If the lower O2 sensor goes bad, then yes, it will report that the cat is not effecient.

99SESPORT's was exhibiting the same code, and the O2 sensor replacement fixed it.

-Auto Makor- -Experimentor -Station Wagonor- -Computerizor- I have a foot that is bigger than a foot. SuperChipFOR SALE
Re: P0420 and the dealership...
#1249724 04/22/05 02:55 PM
Joined: May 2000
Posts: 21,197
Grand Rapids, MI
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Grand Rapids, MI
Never heard of too many main cat failures.

Here's some ok pics of manifolds & Y pipe with cat. If it is the main cat get an aftermarket y-pipe. Plenty around for sale.

-'96 SE MTX 3L -'98 SVT 1,173 of 6,535 -'05 Mazda 6s, loaded, g/f's ride -Need a 96-00 manual on CD? PM or email me
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