Go Back   Ford Truck Enthusiasts Forums > Bronco > 1978 - 1996 Big Bronco
Sign in using an external account
Register Forgot Password?


1978 - 1996 Big Bronco SPONSORED BY:

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community 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 fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 01-07-2011, 04:24 AM
Samantha21 Samantha21 is offline
New User
 
Join Date: Jan 2011
Posts: 1
Samantha21 is starting off with a positive reputation.
Question how do i know if i need to replace the catalytic converter in my ford bronco 1994

I have a 94 bronco and have been told I need to replace mt catalytic converter, among several other things . I know nothing beyond how to change my tire and oil if I absolutly can not find some one to do it for me (. However , I don't want to just let any ol' " I can help ya little lady I am kinda handy and know what I am doin " kinda guy do it and its sittin in my front yard and it won't crank and its my only car and i gotta get to work so I gotta do something.
Ok , so it doesn't want to go , like my foots on the gas and nothin , can't get it over like 15 for ever, it kinda makes a poping noise , it smells like i dont know boiled eggsish kinda smell which i am told is exaust, it kinda jerks and stutters and it slows down and sometimes dies even when i am pressing the gas , it acts like its out of gas . I got it home but it wont even start. I want to take it to mechanic but I have to get it to start fisrt and every guy on my block has stopped by with a different idea of whats wrong and how they can help. .... please help !
Reply With Quote
  #2  
Old 01-07-2011, 09:25 AM
g_k50 g_k50 is offline
Postmaster
 
Join Date: May 2004
Posts: 2,755
g_k50 is gaining momentum as a positive member of FTE.
take the cat loose, see if it runs any better, if it does I would suspect the cat, but actually there's not much that can go wrong with a catalityic converter,
Reply With Quote
  #3  
Old 01-07-2011, 10:19 AM
AbandonedBronco's Avatar
AbandonedBronco AbandonedBronco is offline
Moderator
 
Join Date: Dec 2007
Location: Boise, Idaho
Posts: 4,890
AbandonedBronco has a great reputation on FTE.AbandonedBronco has a great reputation on FTE.AbandonedBronco has a great reputation on FTE.AbandonedBronco has a great reputation on FTE.AbandonedBronco has a great reputation on FTE.
The rotten egg smell is usually from a clogged cat. It sounds like its plugged up pretty well, especially if its causing running problems like that.

Take it to a local exhaust shop. Most of them will test your catalytic converter for free and will tell you if its plugged up. If so, have it replaced.


Another option for that sluggish of performance would be a fully clogged fuel filter. If gas can't get to the engine, it can't go. But the smell you're describing makes me think a cat.


Lastly, you can always have a place test your engine codes. That will tell you a lot. Again, a lot of places will do it for free.
__________________
1981 Ford Bronco. 300I6 Offenhauser DP Intake Holley 600 4bbl, 31" BFG A/T, NP435, 3.00 rear 9" EFI Manifolds. 2.5" high flow cat/muffler.
1984 Ford Bronco. 300I6 Offenhauser C Intake Holley 600 4bbl, 31" BFG A/T, NP435, 3.55 rear 8.8" EFI Manifolds. 2.5" high flow cat/muffler.
Supermotors Pics
Reply With Quote
  #4  
Old 01-07-2011, 11:39 AM
FordManMT's Avatar
FordManMT FordManMT is offline
Senior User
 
Join Date: Sep 2009
Location: Rocky Mountians
Posts: 404
FordManMT has a very good reputation on FTE.FordManMT has a very good reputation on FTE.FordManMT has a very good reputation on FTE.
depending on where you live. i.e. if you dont have yearly emissions test, dump the cats and have a flow master put on. Better sound, better exsaust flow, in your case better mileage.

If you straight pipe a truck, run a full straight pipe to the back, you get a nice deep throaty sound
Reply With Quote
  #5  
Old 01-07-2011, 11:49 AM
AbandonedBronco's Avatar
AbandonedBronco AbandonedBronco is offline
Moderator
 
Join Date: Dec 2007
Location: Boise, Idaho
Posts: 4,890
AbandonedBronco has a great reputation on FTE.AbandonedBronco has a great reputation on FTE.AbandonedBronco has a great reputation on FTE.AbandonedBronco has a great reputation on FTE.AbandonedBronco has a great reputation on FTE.
Cats are there for more than just legal purposes.

Removing them when they're not "required" is a personal choice, and not one that should be encouraged.
__________________
1981 Ford Bronco. 300I6 Offenhauser DP Intake Holley 600 4bbl, 31" BFG A/T, NP435, 3.00 rear 9" EFI Manifolds. 2.5" high flow cat/muffler.
1984 Ford Bronco. 300I6 Offenhauser C Intake Holley 600 4bbl, 31" BFG A/T, NP435, 3.55 rear 8.8" EFI Manifolds. 2.5" high flow cat/muffler.
Supermotors Pics
Reply With Quote
  #6  
Old 01-08-2011, 01:46 AM
FordManMT's Avatar
FordManMT FordManMT is offline
Senior User
 
Join Date: Sep 2009
Location: Rocky Mountians
Posts: 404
FordManMT has a very good reputation on FTE.FordManMT has a very good reputation on FTE.FordManMT has a very good reputation on FTE.
Well we all have our opinions. Even if I don't have "cats" my truck will never create as much poilution than a hybrid
Reply With Quote
  #7  
Old 01-08-2011, 01:48 AM
FordManMT's Avatar
FordManMT FordManMT is offline
Senior User
 
Join Date: Sep 2009
Location: Rocky Mountians
Posts: 404
FordManMT has a very good reputation on FTE.FordManMT has a very good reputation on FTE.FordManMT has a very good reputation on FTE.
*I mean as much polution as the construction of a hybrid
Reply With Quote
  #8  
Old 01-08-2011, 11:54 AM
greystreak92's Avatar
greystreak92 greystreak92 is offline
Post Fiend
 
Join Date: Sep 2002
Location: Gateway to the West
Posts: 9,032
greystreak92 has a great reputation on FTE.greystreak92 has a great reputation on FTE.greystreak92 has a great reputation on FTE.greystreak92 has a great reputation on FTE.greystreak92 has a great reputation on FTE.
A valid point, FordManMt. However, a functioning catalytic converter may not be removed from service by federal law regardless of the existence of inspections. If it fails, and the vehicle is not required to pass said inspections (if they exist where you are) then, and only then, may it be removed/bypassed. Catalytic converters that are functioning properly are completely passive devices and as such have no effect on exhaust auditory signature or the flow rate.
__________________
The only stupid question is the one you DON'T ask!

Big Bronco FAQ's

Reply With Quote
  #9  
Old 01-08-2011, 12:12 PM
ErrorS ErrorS is offline
Posting Guru
 
Join Date: Jan 2005
Posts: 1,749
ErrorS is starting off with a positive reputation.
Mine definitely affects my exhaust sound.. and forget federal law, local law, even without inspections, are very pro-cat. I can't find an exhaust shop in a 100 mile radius that will touch anything catalytic converter forward. If they're certified and get caught (as simple as someone telling on them if THEY get caught) they can face fines up to $10,000 .. at least, that's according to the shops.
If I want a new cat, I *have to* take it to the dealer.. it's sort of rediculous

and when you get a ticket here there is a checkbox for improper exhaust/missing catalytic converter... though I doubt it is enforced, people let their exhaust go without repair even in brand new vehicles.

Hopefully you don't have to face the same kind of laws.. replacement cat can be expensive if the mechanic wants to or has to do it by the book.
__________________
1990 - Bronco. 351W. E40OD

Run codes first, ask questions later.
Reply With Quote
  #10  
Old 01-08-2011, 01:35 PM
greystreak92's Avatar
greystreak92 greystreak92 is offline
Post Fiend
 
Join Date: Sep 2002
Location: Gateway to the West
Posts: 9,032
greystreak92 has a great reputation on FTE.greystreak92 has a great reputation on FTE.greystreak92 has a great reputation on FTE.greystreak92 has a great reputation on FTE.greystreak92 has a great reputation on FTE.
The drawback to leaving a bad catalytic converter in place is that it DOES affect noise and flow rate. The substrate inside a functioning cat has hundreds of linear passages that allow exhaust gasses to flow through it. A cracked or clogged substrate reduces flow and creates turbulence inside the exhaust plumbing effective creating noise and reducing flow. There can be enough clog created to actually stall the engine, burn valves, and make really pretty red colors come out from under the vehicle at the point of the clog.
__________________
The only stupid question is the one you DON'T ask!

Big Bronco FAQ's

Reply With Quote
  #11  
Old 01-08-2011, 05:42 PM
FordManMT's Avatar
FordManMT FordManMT is offline
Senior User
 
Join Date: Sep 2009
Location: Rocky Mountians
Posts: 404
FordManMT has a very good reputation on FTE.FordManMT has a very good reputation on FTE.FordManMT has a very good reputation on FTE.
There are no inspections here in Montana. And I know of exsaust shops that will remove the cats, they are hush hush about it but they do it.
Any type of exsaust restriction can effect preformance.

Soon I plan on turbo charging my truck, so no cats needed
Reply With Quote
  #12  
Old 01-08-2011, 06:05 PM
greystreak92's Avatar
greystreak92 greystreak92 is offline
Post Fiend
 
Join Date: Sep 2002
Location: Gateway to the West
Posts: 9,032
greystreak92 has a great reputation on FTE.greystreak92 has a great reputation on FTE.greystreak92 has a great reputation on FTE.greystreak92 has a great reputation on FTE.greystreak92 has a great reputation on FTE.
No cats needed because of a turbo? I'm just curious how that negates the need?
__________________
The only stupid question is the one you DON'T ask!

Big Bronco FAQ's

Reply With Quote
  #13  
Old 01-09-2011, 01:05 AM
kenjh's Avatar
kenjh kenjh is offline
Posting Guru
 
Join Date: Feb 2009
Location: victoria
Posts: 2,008
kenjh has a good reputation on FTE.kenjh has a good reputation on FTE.
sam get a plug wrench and pull a few spark plugs..if any are fouled.. replace them all you have electronic ignition so that is where to start ...you can figger it out with a little work ..after you check the plugs let us know what is going on..
Reply With Quote
  #14  
Old 01-09-2011, 11:14 AM
vtjvt's Avatar
vtjvt vtjvt is offline
Senior User
 
Join Date: Sep 2006
Location: Bountiful UT
Posts: 437
vtjvt is starting off with a positive reputation.
Quote:
Originally Posted by greystreak92 View Post
No cats needed because of a turbo? I'm just curious how that negates the need?
LOL, I am wondering the same thing.
Reply With Quote
  #15  
Old 01-09-2011, 11:55 AM
AbandonedBronco's Avatar
AbandonedBronco AbandonedBronco is offline
Moderator
 
Join Date: Dec 2007
Location: Boise, Idaho
Posts: 4,890
AbandonedBronco has a great reputation on FTE.AbandonedBronco has a great reputation on FTE.AbandonedBronco has a great reputation on FTE.AbandonedBronco has a great reputation on FTE.AbandonedBronco has a great reputation on FTE.
All vehicles need a catalytic converter, regardless of whether or not its required. They reduce pollution, and as someone whose eyes, nose, and throat are one fire when we have a few days of no wind and the smog sticks around, I know personally what good they do.

Yeah, a hybrid may cause more pollution to build but that's beside the point. My 30 year old truck with a cat puts out less pollution than my 30 year old truck without one. I could care less about the 2hp I lose. It's insignificant.
__________________
1981 Ford Bronco. 300I6 Offenhauser DP Intake Holley 600 4bbl, 31" BFG A/T, NP435, 3.00 rear 9" EFI Manifolds. 2.5" high flow cat/muffler.
1984 Ford Bronco. 300I6 Offenhauser C Intake Holley 600 4bbl, 31" BFG A/T, NP435, 3.55 rear 8.8" EFI Manifolds. 2.5" high flow cat/muffler.
Supermotors Pics
Reply With Quote
Old 01-09-2011, 11:55 AM
 
 
 
Reply

Go Back   Ford Truck Enthusiasts Forums > Bronco > 1978 - 1996 Big Bronco

Tags
1994, 2004, bronco, cadillac, cat, catalytic, change, computer, converter, coverage, expedition, f150, federal, ford, freestar, regulation, replace

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Diagnostic code P0401, Insufficient EGR Flow 96f15013ddie 1987 - 1996 F150 & Larger F-Series Trucks 4 10-02-2012 04:06 PM
My Clothes Smell Like Exhaust Fumes LARIAT 85 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 35 08-28-2012 05:24 PM
1997 F150 Exhaust Sydeshow 1997 - 2003 F150 1 08-10-2012 02:49 PM
PO300,PO305,PO306, PO316 Not Coil Pack HSI111 Explorer, Sport Trac, Mountaineer & Aviator 17 05-12-2011 11:03 PM
Exhaust questions, muffler and catalytic converter YamakidCR500 1978 - 1996 Big Bronco 2 03-22-2009 01:12 PM



All times are GMT -5. The time now is 09:58 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
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. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup