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02-26-2007, 11:15 AM
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#1
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13 Second Club / Moderator
Join Date: Jan 2005
Location: Franklin Lakes, NJ
Posts: 8,695
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would a clogged catalytic converter...
make a car not start?
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Quote:
Originally Posted by LS1ow
Except Jersey mike, great kid, but the way he looks at me makes me feel like im in danger
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02-26-2007, 11:34 AM
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#2
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Lifetime Power Member
Join Date: Jul 2004
Location: London, UK
Posts: 862
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It could if it was completely clogged, but usually it just makes it run sh*tty.
g
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2008 Mysterious Solstice GXP - teh hotness!
2002 Pewter V6 Camaro M5 ~ SOLD 
mods: Gear, weight reduction, tuning
Fear the Gear. 13.585 @ 100.05 1.827
Beater: 93 Jeep Grand Cherokee
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02-26-2007, 02:10 PM
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#3
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11 Second Club
Join Date: Jan 2005
Location: Fishkill, NY
Posts: 1,278
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-Nick
9/11/01- Never Forget
2002 Pontiac Trans-Am WS6 # 206
Chasing 10's
469RWH/437RWTQ
11.05 @ 123
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02-26-2007, 07:22 PM
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#4
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13 Second Club / Moderator
Join Date: Jan 2005
Location: Franklin Lakes, NJ
Posts: 8,695
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car ran fine when i drove it... my buddy said it only has trouble starting... now his mechanic is telling him its the cat... hmmmmmmm
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Quote:
Originally Posted by LS1ow
Except Jersey mike, great kid, but the way he looks at me makes me feel like im in danger
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02-26-2007, 07:32 PM
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#5
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Join Date: Aug 2004
Location: Ewing, NJ
Posts: 836
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not likley that its cloged that bad usual will start just fine run like a crap! you seeeeeee!
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(86 Fiero GT-2.8 4spd.)
(88 Dodge Dakota w/ \'97 318 5spd.)
(82 Chevy Silverado -Crew Cab, Dualie w/ 11ltr Caterpillar 3208 diesel out of concrete pump bolted up to TH400 w/ 22% overdrive.)
1995 Pontiac bonneville daily
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02-26-2007, 08:11 PM
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#6
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12 Second Club
Join Date: Oct 2006
Location: Williamstown/Atlantic City, NJ
Posts: 2,261
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Actually......a clogged catalytic converter can make the car not start. u'd have to unbolt the converters and let them hang and let the exhaust run on open headers or manifolds *wutever u got* and then try and start it.
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2001 SOM Trans-Am WS6 *12.35 @ 114.55mph*
2011 Honda AKA Tori the Crosstour
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02-26-2007, 09:40 PM
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#7
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Banned Camp Director Emeritus
Join Date: Aug 2004
Location: Somerset County
Posts: 8,395
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in my experience, I've never seen a cat got so plugged up that the car wouldnt start.
the fact that the car runs fine but has trouble starting tells me there is nothing wrong with the cat. if the cat was bad, the car would run like poop all the time, not just wile trying to start it.
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Quote:
Originally Posted by baddest434
and 1 more smart ass answer by you and i'm going to reach into this monitor and grab you by the throat
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02-26-2007, 10:32 PM
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#8
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13 Second Club / Moderator
Join Date: Jan 2005
Location: Franklin Lakes, NJ
Posts: 8,695
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Quote:
Originally Posted by Ian
in my experience, I've never seen a cat got so plugged up that the car wouldnt start.
the fact that the car runs fine but has trouble starting tells me there is nothing wrong with the cat. if the cat was bad, the car would run like poop all the time, not just wile trying to start it.
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yup.... the car started like it had a bad fuel pump. it would crank over for a while and then start like it was barely getting gas. once the car was warmed up for the day, it would run great. car is an 01 Grand Am 2.4 btw
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Quote:
Originally Posted by LS1ow
Except Jersey mike, great kid, but the way he looks at me makes me feel like im in danger
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02-27-2007, 07:07 AM
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#9
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.
Join Date: Feb 2006
Posts: 1,385
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Quote:
Originally Posted by qwikz28
yup.... the car started like it had a bad fuel pump. it would crank over for a while and then start like it was barely getting gas. once the car was warmed up for the day, it would run great. car is an 01 Grand Am 2.4 btw
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change the fuel filter first 10 bucks than go from that point
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02-27-2007, 09:24 AM
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#10
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,476
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Any way to check fuel pressure at the fuel rail? I would start there....
- Justin
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1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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02-27-2007, 10:15 AM
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#11
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Join Date: Nov 2005
Location: North Jersey
Posts: 563
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my cat got clogged once hit it with a tac hammer and it never ran better....
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1990 IROC-z28 Convertible ... best et (15.9 @ 86.7)
1970 Chevelle ls5 ... best et (13.97 @ 101.3)
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02-27-2007, 10:17 AM
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#12
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Keyboard Tough Guy
Join Date: Jul 2004
Location: Trenton, NJ
Posts: 6,341
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EASY way to check would be to unplug the o2 sensor in front of the cat...this will give you enough exhaust flow to get around that problem temporarily...if in FACT it IS the cat.
And YES to anyone that is wondering...the car will run fine with no 02 sensors, it'll just run in open loop which is no big deal temporarily...in fact most cars will run fine with very few sensors actually attached 
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02-27-2007, 05:40 PM
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#13
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10 Second Club; Has fan club
Join Date: Dec 2005
Location: Delmont nj
Posts: 4,369
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Quote:
Originally Posted by Ian
in my experience, I've never seen a cat got so plugged up that the car wouldnt start.
the fact that the car runs fine but has trouble starting tells me there is nothing wrong with the cat. if the cat was bad, the car would run like poop all the time, not just wile trying to start it.
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01' Z06 62k miles. Vararam, Longtubes, off road xpipe, tuned by me. Times TBA
2001 Corvette, Bolt ons , tuned 10.75@124.56 mph 1.38 60' Sold
1997 Saturn Sc1 5spd DOHC swapped
Bolt ons, decked head, stock intake cam on exhaust side, lotsa weight redux
13.22@102.32 mph 1.93 60'
12's on moda? One day
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02-27-2007, 08:44 PM
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#14
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13 Second Club / Moderator
Join Date: Jan 2005
Location: Franklin Lakes, NJ
Posts: 8,695
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we shall soon find out. its in teh shop. his dad wouldn't let him tow it to a different shop
__________________
Quote:
Originally Posted by LS1ow
Except Jersey mike, great kid, but the way he looks at me makes me feel like im in danger
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