[DeTomaso] [NPC] Catalytic Converters

[Will Kooiman]

Do the cheap stuff first, especially if it needs it anyway (spark plugs,
fuel filter, O2 sensors).

It could be something stupid like a bad engine ground.

If you don't figure it out, I'd take it to a good shop.  I know a guy in the
Houston area that is very good.

I have a hard time believing the cats would sometimes plug flow so bad it
barely runs only to correct itself later on.  4-9mpg to 20mpg is a big jump.

I don't have a hard time believing a muffler shop told you it was the cats.

wk.

-----Original Message-----
From: detomaso-bounces at realbig.com
[mailto:detomaso-bounces at realbig.com]On Behalf Of Paul Timko
Sent: Tuesday, March 14, 2006 4:17 PM
To: Pantera List
Subject: Re: [DeTomaso] [NPC] Catalytic Converters


I checked for unplugged sensors and there weren't any.  The O2 is only $22,
in stock and it is easy to get at, so I thought I would give it a shot.

Paul
#9270

----- Original Message -----
From: "John Bentley (jab)" <jab at cisco.com>
To: "Tomas Gunnarsson" <guson at home.se>; "Paul Timko" <thedrol at pobox.com>;
"Pantera List" <detomaso at realbig.com>
Sent: Tuesday, March 14, 2006 4:07 PM
Subject: RE: [DeTomaso] [NPC] Catalytic Converters


> Unless its plugged.  Strange things happen when plugged.
>
> JB
>
>
>
> -----Original Message-----
> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com]
> On Behalf Of Tomas Gunnarsson
> Sent: Tuesday, March 14, 2006 2:08 PM
> To: Paul Timko; Pantera List
> Subject: Re: [DeTomaso] [NPC] Catalytic Converters
>
> Paul,
>
> The cat should not affect the regulation loop at all. If anything in
> that neighborhood it could be the O2 sensor (or anything else in the
> control loop of course).
>
> Tomas
> ----- Original Message -----
> From: "Paul Timko" <thedrol at pobox.com>
> To: "Pantera List" <detomaso at realbig.com>
> Sent: den 14 mars 2006 22:53
> Subject: [DeTomaso] [NPC] Catalytic Converters
>
>
>> My step-son has an 91 olds.  The guy at the muffler shop is telling me
> that
>> the catalytic converter is "breaking up"  I'm not exactly sure what
> that
>> means, but of course he is recommending that it get replaced.  It is
>> currently not running well.  The RPMs are unsteady like it is seeking
> the
>> proper mixture but it doesn't have a clue. While this is happening the
>
>> instant MPG is low 4-9 MPG for a Quad Cam 4.  After a little while, it
> runs
>> fine and the MPG is back in a normal range ~20.  I figure that the O2
> is
>> going, but could the catalytic converter be part of the problem?  I
> always
>> thought that all it did was convert "bad" exhaust to "good" exhaust.
>>
>> Any thoughts?
>>
>> Paul
>> #9270
>>
>>
>> _______________________________________________
>>
>> Detomaso Forum Managed by POCA
>>
>> Archive Search Engine Now Available at
> http://www.realbig.com/detomaso/
>>
>> DeTomaso mailing list
>> DeTomaso at realbig.com
>> http://ftl.realbig.com/mailman/listinfo/detomaso
>>
> _______________________________________________
>
> Detomaso Forum Managed by POCA
>
> Archive Search Engine Now Available at http://www.realbig.com/detomaso/
>
> DeTomaso mailing list
> DeTomaso at realbig.com
> http://ftl.realbig.com/mailman/listinfo/detomaso
> _______________________________________________
>
> Detomaso Forum Managed by POCA
>
> Archive Search Engine Now Available at http://www.realbig.com/detomaso/
>
> DeTomaso mailing list
> DeTomaso at realbig.com
> http://ftl.realbig.com/mailman/listinfo/detomaso
>


_______________________________________________

Detomaso Forum Managed by POCA

Archive Search Engine Now Available at http://www.realbig.com/detomaso/

DeTomaso mailing list
DeTomaso at realbig.com
http://ftl.realbig.com/mailman/listinfo/detomaso