if you delete cat will 02 sensors set light
Thread Starter
Junior Member
Joined: Jul 2007
Posts: 39
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From: houston, Tx (for now)
Car: 1992 firebird
Engine: stock 305
Transmission: stock
Axle/Gears: stock
if you delete cat will 02 sensors set light
i have a 92 305 tbi, if i replace the cat w/ a straight pipe do i need to do anything w/ the o2 sensors. will the car run differently because the post cat sensor is reading the same exhaust gas a the precat with out the
converter helping to get rid of the unburned fuel/nox gases
converter helping to get rid of the unburned fuel/nox gases
Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: if you delete cat will 02 sensors set light
check to see if you even have a post cat sensor..... i think you will find your answer 
Thread Starter
Junior Member
Joined: Jul 2007
Posts: 39
Likes: 0
From: houston, Tx (for now)
Car: 1992 firebird
Engine: stock 305
Transmission: stock
Axle/Gears: stock
Re: if you delete cat will 02 sensors set light
nice.... i didn't even look first. i guess i was just thinking to far ahead for a 1992.
Member
Joined: Aug 2005
Posts: 109
Likes: 0
From: Kirksville, MO
Car: 1988 Camaro Sport Coupe
Engine: 305 TBI
Transmission: 700-R4
Axle/Gears: 10 Bolt, 2.73 open diff
Re: if you delete cat will 02 sensors set light
The light didn't come on on my 88 camaro after I deleted the cat.
Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: if you delete cat will 02 sensors set light
yep because there is no o2 sensor after the cat and the one before the cat doesnt care if the cat is there or not.
there are no sensors on our stock cats
there are no sensors on our stock cats
Supreme Member
Joined: Apr 2002
Posts: 3,552
Likes: 5
From: New Jersey
Car: 86 Corvette, 89 IROC, 1999 TA
Engine: 350, 350, LS1
Transmission: 700r4, 700r4, T-56
Axle/Gears: 3.07, 373, 4.10
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