No oxygen sensors.. cause damage?

Mavrick

Founding Member

Aug 29, 2002

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46

Collingwood, ON

Dec 22, 2003

#1

• Dec 22, 2003

• #1

Previous owner broke both o2 sensors.. didnt tell me, the car didnt get ran too much..

Could this have done any damage?

What kind of problems should this have caused me?

Thanks

 

Black 93 Fox

Active Member

Jun 1, 2003

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49

Vancouver,Washington

Dec 22, 2003

#2

• Dec 22, 2003

• #2

It would proably make the car run real ****ty

 

Mavrick

Founding Member

Aug 29, 2002

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46

Collingwood, ON

Dec 22, 2003

#3

• Dec 22, 2003

• #3

The car actually ran fine.. with the exception of stalling after initial startup.

 

Black 93 Fox

Active Member

Jun 1, 2003

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49

Vancouver,Washington

Dec 23, 2003

#4

• Dec 23, 2003

• #4

well i know they didnt put them there if they didnt have a purpose. i cant think of anything it could harm. only thing i know would make the computer act up.

 

MustangPunk302

Founding Member

Sep 11, 2002

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36

West Michigan

Dec 23, 2003

#5

• Dec 23, 2003

• #5

It made your car run in limp mode during closed loop operation(when it was warmed up and crusing). Limp mode makes the car run pig rich, because the o2 sensors aren't giving the output numbers it needs to properly adjust the air to fuel ratio. The start up problem had nothing to do with the o2 sensors, because like I said they don't do anything till the computer is in closed loop operation. Some cars of cousre have computer problems and never see closed loop operation.

 

mike keirstead

New Member

Aug 6, 2003

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ROLLING A JOINT

Dec 23, 2003

#6

• Dec 23, 2003

• #6

Get 2 new o2 sensors and put them in. You will see increased fuel milage and power cause the computer will see the readings. They are usually 40 a piece. I just replaced mine and it woke the car up alot.

 

85_SS_302_Coupe

it sucks (I know) to be on the receiving end

15 Year Member

Nov 11, 2003

6,945

1,598

223

Northern KY

Dec 23, 2003

#7

• Dec 23, 2003

• #7

i actually had an '88 GT with no sensors..ran like any other 5.0 i've ever driven, never stalled, ran like a bat out of hell...so i'm clueless on this subject. I know they serve a purpose so maybe it was a fluke?

 

Mavrick

Founding Member

Aug 29, 2002

2,264

0

46

Collingwood, ON

Dec 23, 2003

#8

• Dec 23, 2003

• #8

85_SS.. thats exactly how my car runs, very weird.

I'll pickup a couple new o2's when i get a spare $100+, grr.

 

MustangPunk302

Founding Member

Sep 11, 2002

1,051

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36

West Michigan

Dec 23, 2003

#9

• Dec 23, 2003

• #9

Yeah, it'll run fine, just rich, limp mode is a fall back because running rich means spark plugs, running to lean means engine internals....

 

G

goldbomb79

Member

Jun 4, 2003

374

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16

Indiana

Dec 23, 2003

#10

• Dec 23, 2003

• #10

38.88 a piece at advance autoparts

 

J

jerry beach

Founding Member

May 20, 2002

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46

Ocala,FL

Dec 23, 2003

#11

• Dec 23, 2003

• #11

What is you MPG? How do your plugs look? If all is well, I would not worry about it. I know a guy here who has no O2's and says he gets very good mpg. Something over 20mpg is outstanding. Much of this depends on your driving habits though.

 

Mavrick

Founding Member

Aug 29, 2002

2,264

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46

Collingwood, ON

Dec 23, 2003

#12

• Dec 23, 2003

• #12

I bought the car in august... have only driven it like 10 KM, so i really doubt that anything went wrong.. just pissed me off when i first found them!

MPG is unknown, i havnt been able to drive the car. I'll check the plugs today and submit a pic. What colour should they be? What should i look for?

The previous owner had an O/R h-pipe so he didnt drive it like it is, atleast not for long.

 

G

goldbomb79

Member

Jun 4, 2003

374

0

16

Indiana

Dec 23, 2003

#13

• Dec 23, 2003

• #13

for some reason it seems to vary from vehicle to vehicle. my car ran so rich it smoked and crap. got like zero miles to the gallon. lol put new ones in and i get better gas mileage and no more richness. some comp. chips are made to bypass your o2 sensors.

 

85 Coupe 5.0

Founding Member

Dec 18, 2001

817

2

16

Kansas

Dec 23, 2003

#14

• Dec 23, 2003

• #14

Running without the O2's will cause the car to run in limp home mode resulting in a rich condition and a check engine light. The side effect of running rich tho will destroy the catalytic converters completely by saturating them with Hydrocarbons or unburnt fuel. But hey, who needs those anyhow?

 

G

goldbomb79

Member

Jun 4, 2003

374

0

16

Indiana

Dec 23, 2003

#15

• Dec 23, 2003

• #15

lol, yea that's what i thought. unless they change the law here where we have to have emission checks i won't run them.

 

Mavrick

Founding Member

Aug 29, 2002

2,264

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46

Collingwood, ON

Dec 23, 2003

#16

• Dec 23, 2003

• #16

85 Coupe 5.0 said:

Running without the O2's will cause the car to run in limp home mode resulting in a rich condition and a check engine light. The side effect of running rich tho will destroy the catalytic converters completely by saturating them with Hydrocarbons or unburnt fuel. But hey, who needs those anyhow?

Click to expand...

I NEED THEM! We have emissions in Ontario, it sucks.

That would explain my CE light coming on a few minutes after i start the car.. (after it tries to get out of "limp home mode" im guessing?)

Thanks for the replies guys.

 

8

88stangnut

New Member

Dec 25, 2003

155

0

0

westfield ,mass

Dec 26, 2003

#17

• Dec 26, 2003

• #17

Mavrick said:

I NEED THEM! We have emissions in Ontario, it sucks.

That would explain my CE light coming on a few minutes after i start the car.. (after it tries to get out of "limp home mode" im guessing?)

Thanks for the replies guys.

Click to expand...

Thanx you guys you helped me out too, somewon cut my wires too and it runs like really rich, the car doesnt have cats but it still had like a black smoke when i steeped on it, judt gotta re wire them and make shure all the vacum lines are correct

 

F

Flyin88LX

New Member

Dec 26, 2003

28

0

1

Colchester IL

Dec 26, 2003

#18

• Dec 26, 2003

• #18

When I put my H pipe on and tried to take the O2 sensors out of the stock pipe it pulled the threads out of the pipe.I had new ones on hand but thought I'd save the old ones for spares but no such luck so beware of that problem also.

 

trips52

New Member

Mar 2, 2003

172

0

0

ocala, fl

Dec 26, 2003

#19

• Dec 26, 2003

• #19

my car doesn't have the o2 sensors hooked up.... actully no wirea going to them... benn this way for a year now and have had no prob..... I get great gas millage... 20 city and can you belive i get 26 on the highway .... just went to JAX and got 312 miles out of a tank................ unbelivable

 

T

Thunder5.0

New Member

Jul 25, 2003

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0

Dec 26, 2003

#20

• Dec 26, 2003

• #20

My car runs without 02sensors just fine. Some guys disconnect them at the track to get more power. The 02sensors are there for emissions purposes.