4.0l 4x4 crap MPG first time ford owner

[Gotta_gofast]

Wrong, some counties in the USA don't require emission testing. Therefore, exactly how is it illegal? Also, farm trucks (with farm plates) don't require catalytic converters because it can cause fires.

Wrong...

Your arguement states "In a county that does not require emissions testing/compliance it must not be illegal to remove your catalytic converter". This is FALSE.

http://www.catalyticconverter.org/law/index.htm

States...
Rules for Replacing Converters
In 1986, the U.S. Environmental Protection Agency issued new guidelines for the construction, efficiency and installation of aftermarket catalytic converters. All CleanAir converters listed in this catalog have been designed, tested and manufactured to meet this policy.

In addition, CleanAir converter listed in this catalog is appropriate for use under the current requirements of the California Air Resources Board (C.A.R.B.).
E.P.A. guidelines state that replacement converters may be installed only in the following situations:

1. The vehicle is missing a converter
2. A state or local inspection program has determined that the existing converter needs replacement
3. Vehicles manufactured prior to 1996 must have more than 50,000 miles, and a legitimate need for replacement must be established and documented
4. In cases of OBD Il-equipped vehicles (1996 and later), the O.E. manufacturer's 8-year/80,000-mile warranty must have expired and a legitimate need for replacement must be established and documented.
Please note that Federal law prohibits removal or replacement of a properly functioning O.E. converter.

When replacement of the converter is appropriate (as outlined above), the E.P.A. further requires that:

1. It be installed in the same location as the original
2. It be the same type as the original (i.e., two-way, three-way, three-way plus air/three-way plus oxidation)
3. It be the proper model for the vehicle application as determined and specified by the manufacturer
4. It be properly connected to any existing air injection components on the vehicle
5. It be installed with any other required converter for a particular application
6. It be accompanied by a warranty information card to be completed by the installer.


Although some areas allow you to operate a vehicle without a catalytic converter for farm or off-road use... YOU CANNOT OPERATE THE VEHICLE ON PUBLIC ROADS.

 

[adsm08]

First things first. It is a FEDERAL offense to run an 1975 or newer vehicle (except the Honda Civic up to 1982) without the proper (two or three way depending on original equipment) catalytic converter. Nobody gives a rat's flying ass about what your county requires for emissions testing.


Next, I think you guys have overlooked something important here...

We have on one hand a converter that was (justifiably, in my mind) gutted because it was glowing red.

We have on the other hand a 4.0 that is getting 11 MPG.


Anyone think there might be a relation between the excessive use of fuel and the melted down converter?

Pull your plugs out and look at them. Post pictures of them if you don't know how to interpret their appearance. If any are wet you have a leaking injector. If they are all black and sooty you probably have a MAF problem.

 

[chazz79]

The plugs have ben in for 600 miles so they should be worth reading by now. I'll check into it. once I get this sorted out I'll get a cat on it because the right thing to do. I know something could be wrong with the truck that killed the first converter so I want to get it right before it back in.

 

[jmg8550]

Wrong...

Although some areas allow you to operate a vehicle without a catalytic converter for farm or off-road use... YOU CANNOT OPERATE THE VEHICLE ON PUBLIC ROADS.

Then why are there farm license plates. If a vehicle is to be used off road or private property only, it needs no license plates. Your argument still doesn't hold any ground. I see vehicles with "farm use" plates running around on public roads all the time where I live. And I know some of them don't have a catalytic converter when they were originally equipped with one or two.

And adsm08, it is also a FEDERAL offense to possess marijuana, yet some states legalized it. Your argument also holds no ground. It's called "right to farm" communities and counties. Sorry I offended your sensitive feelings about emissions.

 

[DFracing]

haha

 

[chazz79]

See^^^^ real plugged converter on my truck

Gutted it, will replace after mileage issue is resolved.

Lets get back on track kids! Sheesh you're like a pack of third graders going through a ritalin shortage

 

[RavoHimself]

have a 4.0L (with a stick though) 4x4 with 32s and 3.73's and 200k+ miles. i can manage 20 mpg on the highway at 70mph. thats where i found i get the best mpg on the highway. i also get like 17 around town depending on how i drive.

 

[Gotta_gofast]

Then why are there farm license plates. If a vehicle is to be used off road or private property only, it needs no license plates. Your argument still doesn't hold any ground. I see vehicles with "farm use" plates running around on public roads all the time where I live. And I know some of them don't have a catalytic converter when they were originally equipped with one or two.

And adsm08, it is also a FEDERAL offense to possess marijuana, yet some states legalized it. Your argument also holds no ground. It's called "right to farm" communities and counties. Sorry I offended your sensitive feelings about emissions.

Eh, I was going to get into it and tell you that you are wrong. But I can see you don't understand what FEDERAL LAW means. There are no states that legalized marijuana and I lived/worked on a farm so I know that you cannot take a vehicle with FARM plates out on a public road. You can use it for farm related work on roadways with proper amber flashing lights and/or a slow vehicle triangle (like hauling crop from the farm to the co-op) but you cannot simply drive it to town or on the highway.

 

[bobbywalter]

federally you can not install a v8 into a ranger either. period.

and still call it a ranger anyway.



the cat can and will effect an obd1 processor as far as the o2 sensor and fuel economy are concerned.

there is an optimal heat range that o2 sensor needs to be to keep the af correct. its a huge variance in calibrations as well. a bad combination of calibration and wrong heat range can really cause a fuel use issue thats not able to be seen with codes.


like asd mentioned, you need to do the basics first...compression, vacuum action, etc along with a plug read..

and 2 inches in tire size is friggen huge too btw. that in itself can eat 2-5 mpg or actually have a gain in mpg depending on driving conditions

 

[chazz79]

It's a non heated o2 sensor, right on that. Catalyst needed to get it up to temp? Very wrong. My truck goes into closed loop and has reasonable crosscounts so it still performs as intended. This is a an obd 1 truck and it could care less whats going out the tail pipe.

 

[jmg8550]

Eh, I was going to get into it and tell you that you are wrong. But I can see you don't understand what FEDERAL LAW means. There are no states that legalized marijuana and I lived/worked on a farm so I know that you cannot take a vehicle with FARM plates out on a public road. You can use it for farm related work on roadways with proper amber flashing lights and/or a slow vehicle triangle (like hauling crop from the farm to the co-op) but you cannot simply drive it to town or on the highway.

Whatever man, your states laws are obviously different than mine. I'll stick to what I know about farm plates in my state. We can get those plates on a Chevy truck as long as our address is on a farm. And as far as the weed, I just left out the "medical" part of legal marijuana. It is still illegal by the feds. I'm done arguing, so I'll agree to disagree.

You all can go back to figuring out the super heated cat problem and poor gas mileage. Thread jack over.

 

[bobbywalter]

It's a non heated o2 sensor, right on that. Catalyst needed to get it up to temp? Very wrong. My truck goes into closed loop and has reasonable crosscounts so it still performs as intended. This is a an obd 1 truck and it could care less whats going out the tail pipe.

ok. so, you have no idea how a o2 sensor operates.....at least thats what i get from that response.

i suggest you study up on how all primary o2 sensors operate. you will find heat is a key element in the situation.

then, well maybe then....

you will understand why the vast majority of "free flowing exhaust" equipped vehicles especially on obd1 systems get 13 mpg when the only mod made was freeing up the exhaust. there is a fair amount of tuning to do along with proper o2 sensor relocation to maximize economy....


its just the way it is.

 

[chazz79]

I could take pyrometer readings comparing my ranger to stock if it would make you feel better?

I'm here for a collective meeting of the minds, not a pee pee measuring contest. Most of the time I'm busy answering questions. The sensor reaches operating temp and goes into closed loop a knowledgeable technician would take that for gospel and move on. Calling someone names in efforts to make yourself feel superior smacks of insecurities.

Unoh graduate.. Ase auto master a1-9......heavy truck t1-8..... I could go on......
you ever watch House? Thats the meeting of the minds I look forward too, no time for homo erotic sword fighting.

 

[Gotta_gofast]

I could take pyrometer readings comparing my ranger to stock if it would make you feel better?

I'm here for a collective meeting of the minds, not a pee pee measuring contest. Most of the time I'm busy answering questions. The sensor reaches operating temp and goes into closed loop a knowledgeable technician would take that for gospel and move on. Calling someone names in efforts to make yourself feel superior smacks of insecurities.

Unoh graduate.. Ase auto master a1-9......heavy truck t1-8..... I could go on......
you ever watch House? Thats the meeting of the minds I look forward too, no time for homo erotic sword fighting.

If you hold all these degrees, why are you on here asking us to troubleshoot for you? Figure it out yourself.

 

[clvanhorn]

If you hold all these degrees, why are you on here asking us to troubleshoot for you? Figure it out yourself.

lol most of the guys around where i live go to unoh, and 90% of them are dumbasses.... not saying the o.p. is, but most of those guys cant tell the difference between their ass and a hole in the ground, but somehow they got a piece of paper that qualifies them to work on my truck