p420 - LS1TECH - Camaro and Firebird Forum Discussion - Threads Tagged with p420

LS1TECH - Camaro and Firebird Forum Discussion
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Threads Tagged with p420

Threads Tagged with p420

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bad, causing, code, coil, ignition, ls1tech, ls7, p0347, p0357, p420, problem, problems, starting, test

Ignition Coil Problem

black2001ws6 on 09-26-2009

04-14-2014 11:47 PM
by Ford_Assassin

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9

2,496

Generation III External Engine

check, hood, p420, smog

p420 replaced rear o2 cat looks fine in smog test

Haddixj on 04-14-2013

04-15-2013 12:06 PM
by RPM WS6

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4

662

General Maintenance & Repairs

0420, bad, code, diablo, engine, ford, high, idle, idleing, idles, jetta, maf, p0420, p420, stop, tuner

P0420 Sets At idle only

T/A2000 on 11-16-2011

11-17-2011 11:04 AM
by T/A2000

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6

6,342

PCM Diagnostics & Tuning

Exclamation

anti, camaro, code, fouler, foulers, ls1, mitsubishi, multiple, o2, p0420, p420, plug, procedure, spark, trick, work

Code P0420, use rear o2 anti foulers?

98blueSS420 on 08-08-2011

08-12-2011 10:59 PM
by Zlow28

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7

5,773

Generation III External Engine

0420, 2001, 2002, 38, 99, camaro, chevy, code, exhaust, ls1tech, missing, p0420, p420, po420, rattles, v6

P0420, changed cat & rear 02, CEL still come on

Fotis on 07-29-2011

08-04-2011 12:21 AM
by SuperSpeed27

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10

5,189

General Maintenance & Repairs

03, 07, 2001, 2011, cherokee, code, denali, g8, grand, jeep, ls1tech, p0420, p420, patrick, po0420

P0420/430 Help me Obi Wan Patick G

rlwjr1 on 06-23-2011

06-23-2011 04:14 PM
by 2002_Z28_Six_Speed

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2

1,266

Pontiac G8 2008-09 & Chevrolet SS 2014+

420, 430, bank, check, code, codes, diagnostic, engine, light, ls3, lucas, oil, p420, p430, pontiac, treatment

p430 and p420 and check engine light on

madmaxx42 on 06-03-2010

01-29-2011 05:15 PM
by bighaas79

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7

5,210

PCM Diagnostics & Tuning

high, ls1, oil, p300, p420, pressure, trans

High Oil Pressure?

owlpuff on 08-01-2010

08-01-2010 04:36 PM
by 71ANTICARB

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6

853

New LS1 Owners - Newbie Tech

2002, 2004, 40, cadillac, code, cts, firebird, hemi, normal, oil, p0420, p420, pontiac, pressure, regulator

Car throwing P0420 code and oil pressure above normal

SonicBoom on 03-02-2010

03-03-2010 02:13 PM
by SonicBoom

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4

761

General Maintenance & Repairs

01, cats, clogged, code, emissions, firebird, general, hemi, impala, ls1, ls1tech, motors, p0420, p420, small, vacuum

What's a P0420 code?

415Z28 on 02-25-2010

02-25-2010 09:16 AM
by Sales2@Texas-speed

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4

1,111

Generation III Internal Engine

1998, 2001, 2002, chevy, code, codes, engine, gmc, p420, p430, sierra, tahoe, truck, tuneados, z71

Tuning an 03 Z71 Tahoe

Gearhead-GM on 03-16-2009

03-16-2009 06:29 PM
by Gearhead-GM

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2

1,605

PCM Diagnostics & Tuning

2000, 53, bank, chevy, code, codes, front, important, ls1, o2, p0430, p420, p430, rear, silverado

how important are o2 sensors?

jason1384 on 03-13-2007

03-14-2007 03:04 PM
by marv

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8

1,100

New LS1 Owners - Newbie Tech

0420, code, codes, detonation, ethanol, fuel, gas, o2, ol, p0420, p0420p0430, p0430, p420, petrol, reading

P0420/P0430 Codes...Fuel issue?

nthnwbr on 06-20-2004

06-23-2004 09:14 PM
by redz00

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2

1,341

PCM Diagnostics & Tuning

2002, bank, catalyst, code, efficeny, extenders, fuel, ls1tech, o2, p0420, p420, pass, po420, regular, smog, system, threshold, trans

Need help with code P0420

BillSS on 02-17-2004

02-17-2004 10:30 PM
by blk~2000~Z28

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3

952

PCM Diagnostics & Tuning

420, bmw, code, p420

Could cut-out cause P 420 code?

BlueSix on 07-17-2003

07-17-2003 01:42 PM
by BAD ASS TA WS6

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1

797

PCM Diagnostics & Tuning

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