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GMC and FORD guys Part II

B

Butch (PA)

Member
Ok, so can on the Ford Taurus, since I have no emissions test here in this county, can the catalytic converter be removed and put a pipe on? Can I also rig it up without welding a pipe on?

GMC Jimmy, where do I get a fuel pressure and volume and dead head pressure tested? Local garage?
 
On the Cat: Legally, NO.. To the best of my knowledge, if it was put on when it was manufactured it has to have one on it (or so I have been told by a couple different exhaust places locally)

Can a person do it anyhow? I suppose a person could.

Is it done?? I'm certain some have..

Some people have been known to "hollow out" the cat's, so at least if there should be an inspection (visual anyhow) it appears to be there. (If I were to do it, this would be the route I would go)

My 2 cents worth.

Brad
 
Jimmy , fuel test , yes well equiped garage should be able to to do those tests .
Ford cat ,you can do back pressure test to find out if cat is plugged ,,garage also, or take o2 sensor out, see if runs betterwith hole open . maybe drop exhaust pipe . If it does, cat may be plugged . You could gut it out , but it needs to be there if it came with it . Not that you'd ever get in trouble for it .
 
might make the sensors read a little funny if someone was to do that........I have HEARD of someone that did it and it got him by for a couple of years though.
 
The last time I checked it was a 5,000.00 fine for the owner and 5,000.00 for whoever took a cat. off. I am not saying you will get caught, but that is the fines.
 
County and state laws do not control emissions equipment. They are controlled by FEDERAL laws. Not to say you can't get by with gutting one, but the shell and all related equipment must be there according to federal law. If it is an older (pre-1996) vehicle, most inspectors don't pay much attention to such. If it is later than 1996 most states have different rules. Just don't drive it in the state of California.
 
you can leave the cat on it, just unbolt the exhaust rite behind the cat, take a hammer and chisel, or big screwdriver, and give it a few good whacks to the inside of it, most of the time you can break the insides of a cat converter to pieces and then start the rig up (with the tailpipe still unhooked) and give it a good rev or two, blows all the crap out, when done bolt the tailpipe back on, and no one would no that the the cat is just there for looks. and it dosent do anything with the codes or check engine light either as long as the sensors are still hooked up. Bob
 
On the Ford;If you think the converter is plugged,have a shop do an exhaust back pressure test.Basically a pressure gauge that screws in the place of the upstream O2 sensor.

On the GMC:Did it rain heavily or did you have high humidity/foggy weather lately? You mentioned in the earlier post that it "kicked back".Sounds like a soggy distributor cap as is REAL common with that cap design.If you're gonna replace it,get a GM cap and rotor.Aftermarkets don't cut it.BTDT!
 
If your state has inspection you have to at least have the body of the convertor on it. But unless you have emissions you can rod it. As for the fuel pressure it should have a filter under it and that is also where to check pressure and I would try a new filter before doing much more
 
96 and newer have an after catalyst o2 to monitor catalyst function. Knock the guts out, and it will set a low catalyst efficiency code and check engine light on.
 
"Knock the guts out, and it will set a low catalyst efficiency code and check engine light on."

Several solutions, HP Tubers, for one, can take care of that!
 
Take it to someone and have it checked out before you gut the converter. You can often save yourself a lot of money having a qualified mechanic check out your vehicle before you try a bunch of random repairs suggested by people who don't do that for a living.A reputable shop will usually be able to diagnose a problem for about an hour charge, a bit more on some problems. Talk to them first and set a limit. I have seen several vehicles after they have been to 3 or 4 other places and had unsuccessful repair attempts and spent a bunch of money on a problem because they thought the dealer was too expensive. Funny because every time we actually fixed the problem for less than the other guy charged to not fix it.
 
Check with your states inspection laws. In Missouri the catalytic converter must be there after 1981 according to the early SAFETY inspection along with other checks like egr and heat tube. 1996 and newer OBD2 vehicles also have a performance test through the 02 sensors performed by the PCM. Brian is right you will set fault codes if you gut the cat. Missouri doesn't check OBD2 information in most of our counties, just the more populated ones. Hope this helps. Gerard
 
In the state of Pa. Whether you have a emission
sticker or Not, all emmision componets must be
on car to pass state inpection....
 
California and few other states have there own Emission standards . Ca being one of the worst . Manufactures even have underhood sticker if it is a CA emission vehicle .
 
See'n as how you don't live in an area that has tail pipe police you can sawzall the converter off and clamp a pipe in it's place. If you think you might sell it some day or have a reason to think the tail pipe police might look under it you can sawzall the pipe behind it, gut it with a piece of rebar, and then sleave and clamp the pipe back in place. Don't know about a taurus but a new converter for a 00 cavalier was going to run about $300, little high for a work car.

Any local shop should have a pressure gauge they can plug into the fuel line and check your pump.

Dave
 
Let me understand:

You have exactly zero evidence that there's anything wrong with your converter, yet you're prepared to both break the law and go to a fair amount of aggravation to remove it, just on the outside chance it MIGHT help?

Either take it to a qualified mechanic, or live with the car the way it is. Shotgun repairs by shade tree mechanics are NEVER successful.
 
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