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alsey_seven
- 2GN Member
- Posts: 1167
- Joined: Mon Sep 11, 2006 12:36 am
- Location: escondido, Ca
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by alsey_seven » Tue Jun 05, 2007 6:21 pm
OK i've had this code in my car. and finally was able to get rid of it/ i mean fixed it. Some say its the cat/converter broke . which is wrong i had to replace my intake manifold gasket . The far left one was all old and busted air was being sucked into the manifold causing it to add more air and fucked up the burn. casuing it to give me the code. When i replaced it ran the car. The cell PO420 was gone without erasing the code.
So if anyone has PO420 please check the intake manifold gaskets.
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dansou5
- 2GN Member
- Posts: 211
- Joined: Sun Apr 08, 2007 2:47 pm
- Location: Michigan
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by dansou5 » Tue Jun 05, 2007 7:19 pm
whats a good way to check them. Have the same code running...

01 Neon R/T with 125,000 Miles
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alsey_seven
- 2GN Member
- Posts: 1167
- Joined: Mon Sep 11, 2006 12:36 am
- Location: escondido, Ca
Post
by alsey_seven » Tue Jun 05, 2007 11:17 pm
ok buy your self somebrake cleaner, and spray where the instake manifold goes into the engine block. make sure the engine is on. if the engine shutters when your spray brake cleaner then you have bad gaskets i will post a video showing what we did.
Official "I'm Going to Drive My Neon till it Dies" Club #000043 For 2000 neon
Official "I'm Going to Drive My Neon till it Dies" Club #000125 For 2001 R/T

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MoxHair
- 2GN Member
- Posts: 3801
- Joined: Mon Feb 27, 2006 5:41 pm
- Location: Atwater, CA; Orlando, FL
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Contact:
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by MoxHair » Wed Jun 06, 2007 11:16 am
P0420 Code Solved
What did you smoke a fatty?
man i'm bored sorry.
2017 Subaru WRX STI
Road Racing > Autocross > Spirited Driving > Sitting in Traffic > Mowing Lawns > Drag Racing
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JRM
- 2GN Member
- Posts: 3512
- Joined: Mon Sep 12, 2005 7:35 pm
- Location: MO
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by JRM » Wed Jun 06, 2007 11:18 am
06 Ford F150 Stock truck 23x,xxx miles and running strong
05 Chevy Equinox Wifey's
Official I sold my Neon Member #482
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gilly02le
- 2GN Member
- Posts: 1423
- Joined: Fri Oct 27, 2006 12:13 am
- Location: Kingston, Ontario, Canada
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Contact:
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by gilly02le » Wed Jun 06, 2007 11:23 am

hahaha.. just burn a big one.. and blow the smoke at your engine.. if it starts getting high.. you know it needs some gaskets.. lol i smoke wayy too much.
New Sig Time.
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Cbussilver01es
- 2GN Member
- Posts: 837
- Joined: Tue Jan 30, 2007 1:03 am
- Location: New Albany, OH
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by Cbussilver01es » Wed Jun 06, 2007 5:56 pm
I had the same prob, 'cept it really was my cat takin a huge smurfing dump...
-Sean
01 Dodge Neon MSII 2.0 DOHC turbo,
'13 Dodge Dart Mopar Edition 1.4 Multi-Air turbo

Nos is a lot like a hot chick with std's you wanna hit it but are afraid of the consequences.
http://www.cardomain.com/ride/2311033