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  #1  
Old 04-20-2010, 11:53 AM
gfj17 gfj17 is offline
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Default engine light/ cat con

hey uh codes at advance auto said my catalytic converter was sensing wrong or something and the guy told me to put higher grade gas in for a while and see if it helped. well i did and a while later the light came back on and i went back and another guy said it was prob clogged and to get a new one. but my grandpa told me that it would prob be alright without one. so i was gonna ask what you all think about it. thanks xp
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  #2  
Old 04-27-2010, 09:37 PM
timothy47129 timothy47129 is offline
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Default Re: engine light/ cat con

Run a bottle of lucus cleaner through it and see if it stays off for a while.And get gas somewere else.there is alot of bad gas out there everywere.as the price goes up the more watered down it gets.if it comes on after that the next step would be to replace the o2 sensor.You can get one on ebay for $20-$35 bucks verses $65 at autozone.9 times out of ten its bad gas or o2 sensor very rare its the cat.Let me guess they give you code P0420 or P0430 Catalyst Efficiency below threashold.



Tim
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sold years ago : Dark blue 1999 ford ranger flareside supercab Xlt 2wd flex fuel 3.0 auto all factory options except 4wd. Current mods include :explorer overhead console with temp display,exterior color matched painted interior dash trim and door panel trim, auto dark rear view mirror,euro tail lights,tonneau cover,1 high flow cat,cherry bomb pro muffler into 6" oval tip exited under the rear step.
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  #3  
Old 04-28-2010, 11:07 AM
gfj17 gfj17 is offline
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Default Re: engine light/ cat con

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Originally Posted by timothy47129 View Post
Run a bottle of lucus cleaner through it and see if it stays off for a while.And get gas somewere else.there is alot of bad gas out there everywere.as the price goes up the more watered down it gets.if it comes on after that the next step would be to replace the o2 sensor.You can get one on ebay for $20-$35 bucks verses $65 at autozone.9 times out of ten its bad gas or o2 sensor very rare its the cat.Let me guess they give you code P0420 or P0430 Catalyst Efficiency below threashold.



Tim
uh yeah i think so its been a while. idk about the codes but the words sound about right. alright ill try it. what lucus stuff you talking about, cuz i got a bottle of it meant for like lubin and increasing mileage. i got a white bottle with plain sticker and yellow fluid. that it? and im not sure exactly where the o2 sensor is.
btw i havent put the lucas in. im trying to figure up mpg right now and then again after probally.

another thing, this truck is 2001 with 283000 miles, and the cat hasnt been changed as far as i know

Last edited by gfj17; 04-28-2010 at 11:14 AM. Reason: added stuff
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  #4  
Old 04-28-2010, 11:16 PM
timothy47129 timothy47129 is offline
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Default Re: engine light/ cat con

Damn 283,000 miles.The lucus i am talkin bout is the clear bottle it is upper cylinder lube.I think that is what you are talking about they might have it in a white bottle.I have never had a cat go bad but I would think if it was bad it would constantly throw the code.and not get better with different gas and cleaners.Are you sure the o2 sensors have never been changed?You are lucky if you get 150,000 miles out of them.They screw into the exhaust pipe and kinda sorta look like a spark plug with a small wire on them instead of a thick sparkplug wire.I would clear the code and try the lucus for a few fill ups


Tim
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sold years ago : Dark blue 1999 ford ranger flareside supercab Xlt 2wd flex fuel 3.0 auto all factory options except 4wd. Current mods include :explorer overhead console with temp display,exterior color matched painted interior dash trim and door panel trim, auto dark rear view mirror,euro tail lights,tonneau cover,1 high flow cat,cherry bomb pro muffler into 6" oval tip exited under the rear step.
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  #5  
Old 04-29-2010, 03:41 AM
ninenineranger ninenineranger is offline
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Default Re: engine light/ cat con

Wow! 283k!!
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  #6  
Old 04-29-2010, 09:09 AM
Jp7 Jp7 is offline
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Default Re: engine light/ cat con

When I read this thread...

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  #7  
Old 04-29-2010, 10:38 AM
gfj17 gfj17 is offline
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Default Re: engine light/ cat con

Quote:
Originally Posted by timothy47129 View Post
Damn 283,000 miles.The lucus i am talkin bout is the clear bottle it is upper cylinder lube.I think that is what you are talking about they might have it in a white bottle.I have never had a cat go bad but I would think if it was bad it would constantly throw the code.and not get better with different gas and cleaners.Are you sure the o2 sensors have never been changed?You are lucky if you get 150,000 miles out of them.They screw into the exhaust pipe and kinda sorta look like a spark plug with a small wire on them instead of a thick sparkplug wire.I would clear the code and try the lucus for a few fill ups


Tim
yeah you can see through it. like translucent or opaque whatever with whitish tint. and i think its the upper cylinder lube. anyway i have no clue if the o2 was changed, we got it from a guy who just buys em to resell em. ill fill her up today after i clear codes and then dump some lucas in. ill tell ya what happens and if i dont work then ill try changin the sensor.

i think i have 2 sensors. i just went under and looked and it looks like one on the pipe kinda close to engine, just after pipe bends up towards engine. and another stickin in the cat. or is that one somethin else?
and it is upper cylinder lube.. i edited this xp

Last edited by gfj17; 04-29-2010 at 05:38 PM. Reason: added stuff
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  #8  
Old 04-29-2010, 10:41 AM
gfj17 gfj17 is offline
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Default Re: engine light/ cat con

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Originally Posted by ninenineranger View Post
Wow! 283k!!
yeah it has alot of scratches and dents all over it so i guess one of the previous owners was careless or stupid one. i know they get naturally worn but still. there is even a bullet sized hole in the door, where the info sticker is when you open it, on the little vent things.. dont ask me why. and two spark plugs are cross threaded in too
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  #9  
Old 04-29-2010, 10:42 AM
gfj17 gfj17 is offline
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Default Re: engine light/ cat con

[QUOTE=Jp7;116089]When I read this thread...

dont read it then xp
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  #10  
Old 04-30-2010, 02:04 AM
mr cribb mr cribb is offline
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Default Re: engine light/ cat con

A general theroy about cats..... they aren't degined to go bad. The sensor in or after the cat measures the efficency of the convertor itself. Something before it has to fail in order to clog up the cat.

Nine times out of ten it's an oxygen sensor in your manifolds. If it runs rich for an extended period of time it can clog up the converter. (I did this in my 03 accord)

Another thought is to cut the cat since KY has no emissions inspections. You would probably have to re-tune your computer to bypass the rear O2 sensor in order to get rid of the check engine light. (I know chevy's are this way)
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  #11  
Old 04-30-2010, 06:52 AM
gfj17 gfj17 is offline
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Default Re: engine light/ cat con

Quote:
Originally Posted by mr cribb View Post
A general theroy about cats..... they aren't degined to go bad. The sensor in or after the cat measures the efficency of the convertor itself. Something before it has to fail in order to clog up the cat.

Nine times out of ten it's an oxygen sensor in your manifolds. If it runs rich for an extended period of time it can clog up the converter. (I did this in my 03 accord)

Another thought is to cut the cat since KY has no emissions inspections. You would probably have to re-tune your computer to bypass the rear O2 sensor in order to get rid of the check engine light. (I know chevy's are this way)
alright so it wouldnt be illegal. idk how to re tune it. and can one oxygen sensor be in the cat? cuz thats the way it looks
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  #12  
Old 04-30-2010, 10:40 AM
Jp7 Jp7 is offline
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Default Re: engine light/ cat con

Quote:
A general theroy about cats..... they aren't degined to go bad. The sensor in or after the cat measures the efficency of the convertor itself.
TRUE

Quote:
Something before it has to fail in order to clog up the cat.
TRUE

Quote:
Nine times out of ten it's an oxygen sensor in your manifolds.
FALSE

Quote:
If it runs rich for an extended period of time it can clog up the converter. (I did this in my 03 accord)
TRUE

Quote:
Another thought is to cut the cat since KY has no emissions inspections.
POSSIBLE SOLUTION

Quote:
You would probably have to re-tune your computer to bypass the rear O2 sensor in order to get rid of the check engine light. (I know chevy's are this way)
What do the fuel and timing maps have to do with that? Disabling the peripherial bits that control secondary hego control will disable the code but it will fail for readyness.
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Quote:
Originally Posted by FireRanger View Post
I'm dying to see this at night. Someone go tell the sun to give up already.
Quote:
Originally Posted by beef08 View Post
Your the man, you bring our dreams to a reality within the lighting spectrum
Quote:
Originally Posted by BCobe View Post
Jp7 you always do AMAZING work! Hats off to you sir
Quote:
Originally Posted by FireRanger View Post
People so often confuse "hating" with "knowing better".
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  #13  
Old 05-03-2010, 04:47 AM
mr cribb mr cribb is offline
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Default Re: engine light/ cat con

Quote:
What do the fuel and timing maps have to do with that? Disabling the peripherial bits that control secondary hego control will disable the code but it will fail for readyness.
I said that beacuse being an OBII computer the engine light will stay on if you remove the cat. So it is more of a convienience factor than anything else. I didn't necessarily mean to re-tune the whole computer. I am more versed with the vortec chevys and you can have your computer re-written to make it think there is a cat to not trip CEL. It mostly completes the circuit to keep the system all in check so if you did have to have the computer scanned for some reason or another.

Realistically it is just easier to buy a universal cat and put it on as long as it is OBDII compatible.
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Last edited by mr cribb; 05-03-2010 at 04:54 AM.
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  #14  
Old 05-03-2010, 04:51 AM
mr cribb mr cribb is offline
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Default Re: engine light/ cat con

Quote:
Originally Posted by gfj17 View Post
alright so it wouldnt be illegal. idk how to re tune it. and can one oxygen sensor be in the cat? cuz thats the way it looks
Well technically it is illeagal by federal law. But I'm not saying to break the law. Looking at things like truck has almost 300k miles, and the location. I lived in KY for a few years. Just kind of a quick fix until you decide if you want to replace the cat or not.
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  #15  
Old 05-03-2010, 06:31 AM
Jp7 Jp7 is offline
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Default Re: engine light/ cat con

Quote:
Originally Posted by mr cribb View Post
I said that beacuse being an OBII computer the engine light will stay on if you remove the cat. So it is more of a convienience factor than anything else. I didn't necessarily mean to re-tune the whole computer. I am more versed with the vortec chevys and you can have your computer re-written to make it think there is a cat to not trip CEL. It mostly completes the circuit to keep the system all in check so if you did have to have the computer scanned for some reason or another.

Realistically it is just easier to buy a universal cat and put it on as long as it is OBDII compatible.
Completes the circuit eh?
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Looking for a professional retrofitter to add HIDs or LEDs to your Ranger? PM me if your looking to have work done, and have cash to spend.

Quote:
Originally Posted by FireRanger View Post
I'm dying to see this at night. Someone go tell the sun to give up already.
Quote:
Originally Posted by beef08 View Post
Your the man, you bring our dreams to a reality within the lighting spectrum
Quote:
Originally Posted by BCobe View Post
Jp7 you always do AMAZING work! Hats off to you sir
Quote:
Originally Posted by FireRanger View Post
People so often confuse "hating" with "knowing better".
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