Search



Go Back   MustangForums.com > Ford Mustang Tech > 4.6L (1996-2004 Modular) Mustang
Sign in using an external account
Register Forgot Password?
Search

4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.
Sponsored by Cruizin Concepts


Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
 
Thread Tools Search this Thread
Old 05-06-2007, 01:05 PM   #1
bdmustang1994
 
Join Date: May 2007
Posts: 3
Default Catalytic Converter Gets Red Hot

Ok so i replaced my intake manifold yesterday, had the original plastic exchange one on my 97 GT conv. After everything was put back together it started just fine, and ran good for a few min, no idle problems that i could tell. But later that night when i went to take it out for a drive i made it about 2 miles before i had to stop at a light, when i did it backfired and started idling really hard. I pulled over checked all my connections, and im not leaking coolant anymore, thank God, and no fuel that i can tell, and unless i missed something everything was hooked back up the same as i labeled it when i took it off. Anyways when i limped it back home i finally noticed that my cat convertor was GLOWING RED, which im sure isn't good so my question now is what didn't i do right when i hooked everything back up to cause this?? i did removed all my fuel injectors and cleaned them when i had the engine torn apart, but i put everything back of course. I took the mass air sensor and the intake out just to have more room also, not sure if that matters or not. Any ideas as to why i almost caught my car on fire??


This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
bdmustang1994 is offline   Reply With Quote
Old 05-06-2007, 01:25 PM   #2
96GT226410
CSMG Moderator
 
Join Date: Mar 2006
Location: New Jersey
Posts: 3,493
Default RE: Catalytic Converter Gets Red Hot

If the cat is glowing red hot, then it's clogged. Is it factor? How many miles? Get underneath the car and tap the cat with a rubber hammer and listen. If the catalyst inside has crumbled, it'll rattle. If so, replace your mid pipe.
__________________
I don't have a Mustang anymore. Instead, I have a wife and kids. Still trying to find a way to have a Mustang and a happy wife. Any ideas?

Old Mustangs
89 LX hatchback white - 88 GT convertable black - 96 GT purple - 96 GT red
96GT226410 is offline   Reply With Quote
Old 05-06-2007, 01:44 PM   #3
bdmustang1994
 
Join Date: May 2007
Posts: 3
Default RE: Catalytic Converter Gets Red Hot

I should also mention that it was ONLY the driver's side cat that started glowing, just forgot to put that into my original post. And yes i do hear a rattling noise coming from it when the car was running, so im guessing you're right and it's crumbled. Did that happen becuase of the extreme heat and it just died then?? So now my question is what could have caused it to get that hot in the first place, and only 1 side to get that hot?? i have no problem replacing my mid pipe, was thinking like an H or Z pipe (excuse to replace it, oh dear it broke and needs replaced ) anyways ive read a couple other things about how if the engine was running too rich that would cause the cat to overheat and glow like that, and that seems very plausable to me because the exhaust smells like im running really rich. what changed that caused me to start running that rich? was it beacuse i cleaned the injectors when i had them out? Thanks for the help.
bdmustang1994 is offline   Reply With Quote
Old 05-06-2007, 02:58 PM   #4
BigTurbo6
2nd Gear Member
 
Join Date: Apr 2006
Vehicle: 89 LX 5.0
Location: Alabama
Posts: 214
Default RE: Catalytic Converter Gets Red Hot

They just get old and melt/clog. That's why we get rid of those restrictive things for racing. Also I'd do a H pipe before doing a Z pipe!! I'm sure you meant X, but I couldn't help it.
__________________


98 Vert GT - K&N Cone , FRRP plug wires, PI cams, PI Intake, IAC Mod
( 4.10 gears yet to be installed )
BigTurbo6 is offline   Reply With Quote
Old 05-06-2007, 03:12 PM   #5
bdmustang1994
 
Join Date: May 2007
Posts: 3
Default RE: Catalytic Converter Gets Red Hot

No i ment Z pipe i wanted to see how restricted i could get in my exhaust flow, lol. anyways i talked to my uncle who said i would have to get my computer reprogrammed to work with an H or X pipe vs the cat setup from the factory, is that true, and if so is it worth getting a mid pipe and having it reprogrammed or just buy a new cat and stick er on there to replace the one that rattles??
bdmustang1994 is offline   Reply With Quote
Old 05-06-2007, 06:37 PM   #6
breagles
2nd Gear Member
 
Join Date: Nov 2005
Location:
Posts: 267
Default RE: Catalytic Converter Gets Red Hot

You can have my old h-pipe it's stock but good . If you can pick up in san antonio .
__________________
99 GT vortech v-2 aftercooled , crane cams 264 i 270 e , o/r h pipe , flows , 42 # inj, 3.73 , 2100 stall , 302 stroker , ported heads , 75 mm tb c & l plenum , and alot more. 512 hp 535 tq 11.98 @ 118 mph on street tires
breagles is offline   Reply With Quote
Old 05-06-2007, 06:41 PM   #7
Zanador
2nd Gear Member
 
Join Date: Nov 2006
Location: Bergen County, New Jersey
Posts: 477
Default RE: Catalytic Converter Gets Red Hot

Hrm.. a Z pipe... It might be a halfway between a H and a X... I wonder if anyone has ever tried that. It would favor the passenger side at higher RPM's because it would only send exhaust that way, but who knows! Would be interesting to see built.
__________________
Zanador is offline   Reply With Quote
Old 05-06-2007, 06:46 PM   #8
ben790450
I ♥ Acer
 
Join Date: Mar 2006
Location: Colorado- 8500 feet!
Posts: 5,928
Send a message via AIM to ben790450 Send a message via Yahoo to ben790450
Default RE: Catalytic Converter Gets Red Hot

+1 on the Z pipe. Do that!
ben790450 is offline   Reply With Quote
Old 05-06-2007, 06:46 PM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

Tags
2005, 46l, 96, cadilac, cat, catalyc, catalytic, converter, converters, ford, gt, hot, mustang, red, rid, running, supposed

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Tuning for high altitude matyellott 2005 - 2014 Mustangs 15 08-07-2008 08:23 PM
carb tuning espskillz Classic Mustangs (Tech) 16 11-17-2006 02:53 PM
Hardened Valve Seats 73Cleveland Classic Mustangs (Tech) 14 08-12-2005 01:10 PM

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 01:13 AM.

© Internet Brands, Inc.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup