faulty o2 sensor cause car to run rough?

[Lithium381]

Car has been running weird, a tad rough........recently the check engine light came on....i looked in the manuel for the diagnostic code and it returned that my oxygen sensor was faulty......so i took it into the shop and they confirmed that the o2 was out(they'll say anything to get you to replace something)......could that be the cause of my car running a little rough?

$200 part + repairs


THEN i've got a pretty good oil leak going on.....hopefully they can find/fix that(hopefully not my head gasket!!!)

 

[thebestMAX]

run rough yes if you mean surging not idle. Poor gas maileage??

$200 no.

What kind of car?

 

[Lithium381]

Originally posted by: thebestMAX
run rough yes.

$200 no.

What kind of car?

it's an '88 4runner.......the part itself seems to cost about 130ish when i looked around on teh net......that leaves $50 for labor, which i PROBABLY could have done myself....(it was really 180) but i wanted 'em to find the oil leak anyways....



any idea what a switch sensor is???? it returned that diagnostic code as well

 

[thebestMAX]

I see prices from 55 to 114 so not too out of line. An easy job to replace if no after adjustments are needed. I dont think so but not sure.

Oil leak is another matter.

 

[IamElectro]

If you replace the o2 sensor yourself disconnect the battery overnight this will allow the computer time to blank out and will reset itself to the new o2 sensor.

 

[LordRaiden]

Originally posted by: IamElectro
If you replace the o2 sensor yourself disconnect the battery overnight this will allow the computer time to blank out and will reset itself to the new o2 sensor.

I thought the computers were supposed to pick up the new sensors right away. I've never, ever had to do this before. I've blown out 2 O2 sensors on 2 separate vehicles and this was never an issue. *shrug* Oh well. It may be on some vehicles.