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YACT: Is it possible for my car to not have an O2 Sensor?

eldorado99

eldorado99

Lifer
My car is a 1984 Ford LTD 3.8 Litre (232CI) 2 barrel carb. It most likely wont pass emissions right now as I'm pretty sure it needs a new catalytic converter, and possibly O2 Sensor so I have been told, but in my Haynes manual there doesnt seem to be anything on the O2 sensor, does that mean I don't have one?
 
I'm pretty sure O2 sensors are only going to be found on fuel injected engines.. could be wrong though.
 
Originally posted by: CraigRT
heh, carb'd car, i can't see it having an o2 sensor... what computer would be there to read codes from it? 😛
Click to expand...

Yes thats true, but if there was an O2 sensor, where would it most likely be located? if its possible to guess that is...
 
Originally posted by: eldorado99
Originally posted by: CraigRT
heh, carb'd car, i can't see it having an o2 sensor... what computer would be there to read codes from it? 😛
Click to expand...

Yes thats true, but if there was an O2 sensor, where would it most likely be located? if its possible to guess that is...
Click to expand...

There is. It is located on the passenger side of the engine in the exhaust manifold.
There is also a an ECC.
 
Originally posted by: eldorado99
Originally posted by: CraigRT
heh, carb'd car, i can't see it having an o2 sensor... what computer would be there to read codes from it? 😛
Click to expand...

Yes thats true, but if there was an O2 sensor, where would it most likely be located? if its possible to guess that is...
Click to expand...


Electronic feedback carbs that were popular just before the industry got into FI had O2 sensors and primitive computers that metered the fuel/air mixture.
If your car has an O2 sensor it would either be just after the exaust manifolds or just after the Y pipe, but before the Catcon.
 
well, see, in d'em days, we nident have no damn 02 sensors boy....we had to walk 40miles in d'em blistering sotrms go go get one of them Oxigenical ions at the generAL store...d'em bastards were heavy too, and sorts of tractors and plows would a been attracted to you boy...

nah..in d'em days, we were real men..we a called us "oxygenisms"
 
Even if there is an O2 sensor in your car, I've never known of a pre-90's car that could be smog tested via computer. That's why smog checks have the hoses and whatnot to hook up to your vehicle in addition to the fancy little computer hookup. Unless you live in some weird state where they don't have the hose hookups you should be fine. Then again, I'm not a hardcore car person.

Oh yeah, general advice: take out all the bulbs on your warning indicators. If any one of them go off for any reason then you fail the test automatically. That's a big problem when your Check Engine light goes off for non-critical problems, or just randomly like my car.
 
Originally posted by: yukichigai
Even if there is an O2 sensor in your car, I've never known of a pre-90's car that could be smog tested via computer. That's why smog checks have the hoses and whatnot to hook up to your vehicle in addition to the fancy little computer hookup. Unless you live in some weird state where they don't have the hose hookups you should be fine. Then again, I'm not a hardcore car person.

Oh yeah, general advice: take out all the bulbs on your warning indicators. If any one of them go off for any reason then you fail the test automatically. That's a big problem when your Check Engine light goes off for non-critical problems, or just randomly like my car.
Click to expand...

No the car doesn't have OBII. However that doesn't mean he will pass a sniffer.

That second part well..........
 
you need the O2 sensors and cats to pass smog. The most important advice is too not leave the 02 sensors hanging
 
Originally posted by: QuitBanningMe
Originally posted by: yukichigai
Even if there is an O2 sensor in your car, I've never known of a pre-90's car that could be smog tested via computer. That's why smog checks have the hoses and whatnot to hook up to your vehicle in addition to the fancy little computer hookup. Unless you live in some weird state where they don't have the hose hookups you should be fine. Then again, I'm not a hardcore car person.

Oh yeah, general advice: take out all the bulbs on your warning indicators. If any one of them go off for any reason then you fail the test automatically. That's a big problem when your Check Engine light goes off for non-critical problems, or just randomly like my car.
Click to expand...

No the car doesn't have OBII. However that doesn't mean he will pass a sniffer.

That second part well..........
Click to expand...
Oh no, don't misunderstand me, I didn't mean he'd pass the smog check guaranteed, I just meant he'd be good to go for the equipment requirements.

And I do realize the second bit I posted is borderline illegal, but for older cars the "warning light = fail" thing can be a serious problem. Back in the day, it seems, car manufacturers liked to make the "check engine", "check oil", etc. lights go off for everything. Newer cars... not so much.
 
Another thing to think about is that even if the O2 sensors are there and working properly the ECM (or whatever Ford called it) and the carb itself could be messed up.
Its very common for the 20+ year old electronics to no longer work or not work properly.
If it doesnt pass you may want to see about possibly switching to a non-feedback carb if the electronics are shot.
 
Originally posted by: yukichigai
Originally posted by: QuitBanningMe
Originally posted by: yukichigai
Even if there is an O2 sensor in your car, I've never known of a pre-90's car that could be smog tested via computer. That's why smog checks have the hoses and whatnot to hook up to your vehicle in addition to the fancy little computer hookup. Unless you live in some weird state where they don't have the hose hookups you should be fine. Then again, I'm not a hardcore car person.

Oh yeah, general advice: take out all the bulbs on your warning indicators. If any one of them go off for any reason then you fail the test automatically. That's a big problem when your Check Engine light goes off for non-critical problems, or just randomly like my car.
Click to expand...

No the car doesn't have OBII. However that doesn't mean he will pass a sniffer.

That second part well..........
Click to expand...
Oh no, don't misunderstand me, I didn't mean he'd pass the smog check guaranteed, I just meant he'd be good to go for the equipment requirements.

And I do realize the second bit I posted is borderline illegal, but for older cars the "warning light = fail" thing can be a serious problem. Back in the day, it seems, car manufacturers liked to make the "check engine", "check oil", etc. lights go off for everything. Newer cars... not so much.
Click to expand...

It might be missed but they are supposed to check that the light is functioning.
Also I'm not sure if the check engine light is auto failure for pre OBD II cars.

All this assuming he has to have a smog check of course.
 
Originally posted by: CrackRabbit
Another thing to think about is that even if the O2 sensors are there and working properly the ECM (or whatever Ford called it) and the carb itself could be messed up.
Its very common for the 20+ year old electronics to no longer work or not work properly.
If it doesnt pass you may want to see about possibly switching to a non-feedback carb if the electronics are shot.
Click to expand...

They might not notice but all smog equipment has to be in place for your year/make of engine.
 
Originally posted by: QuitBanningMe
It might be missed but they are supposed to check that the light is functioning.
Also I'm not sure if the check engine light is auto failure for pre OBD II cars.

All this assuming he has to have a smog check of course.
Click to expand...
I'm not sure if they can easily check the light on older model cars, at least without pulling apart the dashboard. On the old '84 Dodge van I drove it'd take 15 minutes with a screwdriver just to get the panel off so you could see the bulbs, and the panel was the entire top half of the dash.

As far as it being auto-failure, it was for a friend's '92 Honda something-or-other. Not sure if that's pre-ODBII or not.
 
Originally posted by: QuitBanningMe
Originally posted by: CrackRabbit
Another thing to think about is that even if the O2 sensors are there and working properly the ECM (or whatever Ford called it) and the carb itself could be messed up.
Its very common for the 20+ year old electronics to no longer work or not work properly.
If it doesnt pass you may want to see about possibly switching to a non-feedback carb if the electronics are shot.
Click to expand...

They might not notice but all smog equipment has to be in place for your year/make of engine.
Click to expand...


Not in Texas 😉 I have no clue how it is in BC though.
 
Originally posted by: CrackRabbit
Originally posted by: QuitBanningMe
Originally posted by: CrackRabbit
Another thing to think about is that even if the O2 sensors are there and working properly the ECM (or whatever Ford called it) and the carb itself could be messed up.
Its very common for the 20+ year old electronics to no longer work or not work properly.
If it doesnt pass you may want to see about possibly switching to a non-feedback carb if the electronics are shot.
Click to expand...

They might not notice but all smog equipment has to be in place for your year/make of engine.
Click to expand...


Not in Texas 😉 I have no clue how it is in BC though.
Click to expand...

Yes in Texas😉 I talk to a few people that do engine swaps there.

(a) Any person owning or operating any motor vehicle or motor vehicle engine on which is installed or incorporated a system or device used to control emissions from the motor vehicle in compliance with federal motor vehicle rules shall maintain the system or device in good operable condition and shall use it at all times that the motor vehicle or motor vehicle engine is operated. (b) No person may remove or make inoperable any system or device used to control emissions from a motor vehicle or motor vehicle engine or any part thereof, except where the purpose of removal of the system or device, or part thereof, is to install another system or device, or part thereof, which is equally effective in reducing emissions from the vehicle. Acceptable removal and/or installation practices include: (1) Replacement of the engine of a vehicle if:
 
Originally posted by: QuitBanningMe
Originally posted by: CrackRabbit
Originally posted by: QuitBanningMe
Originally posted by: CrackRabbit
Another thing to think about is that even if the O2 sensors are there and working properly the ECM (or whatever Ford called it) and the carb itself could be messed up.
Its very common for the 20+ year old electronics to no longer work or not work properly.
If it doesnt pass you may want to see about possibly switching to a non-feedback carb if the electronics are shot.
Click to expand...

They might not notice but all smog equipment has to be in place for your year/make of engine.
Click to expand...


Not in Texas 😉 I have no clue how it is in BC though.
Click to expand...

Yes in Texas😉 I talk to a few people that do engine swaps there.

(a) Any person owning or operating any motor vehicle or motor vehicle engine on which is installed or incorporated a system or device used to control emissions from the motor vehicle in compliance with federal motor vehicle rules shall maintain the system or device in good operable condition and shall use it at all times that the motor vehicle or motor vehicle engine is operated. (b) No person may remove or make inoperable any system or device used to control emissions from a motor vehicle or motor vehicle engine or any part thereof, except where the purpose of removal of the system or device, or part thereof, is to install another system or device, or part thereof, which is equally effective in reducing emissions from the vehicle. Acceptable removal and/or installation practices include: (1) Replacement of the engine of a vehicle if:
Click to expand...


Pwned 🙁 I have never had them check and see if everything is there or working though.
 
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