oxygen sensor??

kermut · Post by **kermut** » Thu May 17, 2007 3:18 pm

hey guys just had a simple question well its not simple for me but what would happen if i disconnect my o2 sensor. will my car run rich or lean??

Post by **Bennoz** » Thu May 17, 2007 3:47 pm

Both. It'll run rich at low rpm & lean at high rpm. Good way to burn valves.

JOeJOe · Post by **JOeJOe** » Thu May 17, 2007 3:51 pm

Any reason why you want to do that??

jonowong · Post by **jonowong** » Thu May 17, 2007 4:29 pm

hes turbo so im assuming he wants to run the engine rich

Post by **Bennoz** » Thu May 17, 2007 4:31 pm

If thats the case, If you disconnect the oxygen sensor and ground it to the chassis, the ECU will think that the car is running really lean, and will try to richen the mixture. At the other extreme, if you disconnect the oxygen sensor, and replace it with a small AA battery that supplies 1.5 volts, the ECU will think that the car is running really rich and attempt to adjust the mixture to be leaner.

kermut · Post by **kermut** » Thu May 17, 2007 4:37 pm

cool knowledge ... : ) the cars no longer turbo

.. fto's arent made for turbo too many problems...i was asking cause my car feels slow ..and i remember reading sumwhere it mite be the o2 senor ...cause the cars stock as anything now

JOeJOe · Post by **JOeJOe** » Thu May 17, 2007 4:45 pm

Change it. Save you a lot of petrol money.

kermut · Post by **kermut** » Thu May 17, 2007 5:19 pm

hey bennos if i connect it to ground wont that fry my ecu? cause normally senors only give out small volteges??

mr-charisma · Post by **mr-charisma** » Thu May 17, 2007 5:58 pm

Have you put the stock airbox & piping back on? If so, follow the piping back to the engine & there is a little tube that connects to an air sensor, this needs to be connected otherwise your car will run like a Hyundai Excel

kermut · Post by **kermut** » Thu May 17, 2007 6:08 pm

little pipe hummzzz i have a gr ...dont know of any pipes bro only the one that goes into the rocker cover

mr-charisma · Post by **mr-charisma** » Thu May 17, 2007 7:12 pm

it is a part of the stocko air piping, you'll see it if you take it off, it sticks out the side of the main pipe

khunjeng · Post by **khunjeng** » Thu May 17, 2007 8:06 pm

mr-charisma wrote:it is a part of the stocko air piping, you'll see it if you take it off, it sticks out the side of the main pipe

Hope your not talking about the PCV valve pipe? if u are lol.

O2 is on the exhaust anyway. has to be how elese would it measure the mixture.

mr-charisma · Post by **mr-charisma** » Thu May 17, 2007 8:24 pm

no idea what its called, just know that it makes your car run like sh*t if its not plugged in

khunjeng · Post by **khunjeng** » Thu May 17, 2007 8:36 pm

mr-charisma wrote:no idea what its called, just know that it makes your car run like sh*t if its not plugged in

Probably not the best idea to give advice if you dont know what it is or "what its called"

The O2 sensor is located just after to two exhaust manifolds join and before the Cat converter.

The bit your talking about is the PCV valve. you can vent it to Atmo wth a filter or wack on a catch can. The PCV is a one way valve. The car would run like sh*t if u had a vacume leak. I had mine vented to Atmo and no dramas for ages.

mr-charisma · Post by **mr-charisma** » Thu May 17, 2007 11:06 pm

At least I'm offering advice which is more than I can say for you..

he can choose whether to take my advice or not, I'm just saying what has caused similar problems for me & how I fixed it
...besides, I don't see it making any difference if he checks it & it isn't whats causing the problem, takes all of about 30 seconds to look at it.

If you ever had anything helpful to say I might actually take it on board, but until I see you adding something constructive to the forums instead of talking out of your ass I'm not gonna take you seriously..

khunjeng · Post by **khunjeng** » Fri May 18, 2007 8:12 am

mr-charisma wrote:If you ever had anything helpful to say I might actually take it on board, but until I see you adding something constructive to the forums instead of talking out of your ass I'm not gonna take you seriously..

Considering he was asking about the O2 sensor and you told him it was in the intake I pretty sure your the one talking out your arse.

i.e

mr-charisma wrote:Have you put the stock airbox & piping back on? If so, follow the piping back to the engine & there is a little tube that connects to an air sensor, this needs to be connected otherwise your car will run like a Hyundai Excel

mr-charisma · Post by **mr-charisma** » Fri May 18, 2007 9:54 am

Lol if you'd read the whole post you'd see I was responding to this;

kermut wrote:cool knowledge ... : ) the cars no longer turbo .. fto's arent made for turbo too many problems...i was asking cause my car feels slow ..and i remember reading sumwhere it mite be the o2 senor ...cause the cars stock as anything now

Since he's put the stocko air box back on it would make sense to me that what I suggested might fix his problem, even if it is just the breather then its not really going to hurt whether its plugged into the intake or not..

kermut · Post by **kermut** » Fri May 18, 2007 1:38 pm

hey thanks for the help be nice ppl everyone trying to help thats all : )...ohh my car runs really well when its cold ??interesting

FtoSam · Post by **FtoSam** » Fri May 18, 2007 1:57 pm

Settle down guys...

Michael... No need to get fiesty.

KJ: It can be helpful to have different suggests..

Both of you leave it.

jonowong · Post by **jonowong** » Fri May 18, 2007 3:43 pm

FtoSam wrote:Settle down guys...

Michael... No need to get fiesty.

KJ: It can be helpful to have different suggests..

Both of you leave it.

I love sam so much because he has moderator privledges..