o2 Sensor Replacement...

[jrhaile]

I know this has been talked about a lot, but when I typed o2 into search I got errors so here we go. It's about a 100 dollar part correct? and how easy is it to install? my car seems to be idling kind of rough and I was told this is what it is. I checked and cleaned my icv already and it was fine so it must be o2. also I have brand new bosch plugs.

[///M Power]

yeah might be ur O2 sensors. You can get them at liek kragen for liek 80 if im nto mistaken.

Easy to replace if you knwo where it is. I dont know about your engine (i have an M20) btu it can be anywhere from below ur 6th cyclinger to near your tail pipe. Once you find it it is a simple job but may require a U-type tool to get to the other side. a simple plug from ur comp to ur xhaust managment.

[El Presidente]

Before you replace it, use the check engine diag. It will tell you if the O2 is bad.

[dutchbmw]

When your car is OBDII there are two o2 sensors; one before and one after the cat.

[CiscoKid]

i tihnk OBD1 has 2 obd2 has 4, but im not sure... correct me if im wrong

[dutchbmw]

Originally posted by CiscoKid@May 30 2004, 03:20 PM
i tihnk OBD1 has 2 obd2 has 4, but im not sure... correct me if im wrong

OBDI has 1 and OBDII 2 sensors I thought.

[CiscoKid]

OBDI 2 sensors befor the cat
OBDII 2 sensors before and 2 after the cat

[TeeUp]

obd I - just one
obd II - one before and one after the cat

autozone has a loan-a-tool program. for a deposit $, they will loan you some specialty tools for DIY projects. then return the deposit as soon as you turn in the tool(s) you borrowed.

for O2 sensor replacement, the deposit i think is $15.

just a reminder: be careful to suspend your car in secured jack stands when crawling under it.

[El Presidente]

OBDI has a precat o2. OBDII has pre and post cat. As he is talking about his car, a 95, it would be OBDI, thus being precat only.

[dutchbmw]

OBDII was introduced ending 1995, so it could be an OBDII??

[TeeUp]

i'm on the impression that for US BMWs obd II started in 96.

[CiscoKid]

1995 m3 = OBD1
1996 m3 =OBD2

i guess 1996 is when obd2 was used

[El Presidente]

All 325s are OBDI.

The displacement was increased to 2.8 due to OBDIIs restrictive nature, and thus, the 328 was born.

[Kevin325i]

96 was the year the US required the use of OBDII. Some manufactures introduced it earlier than this. An example: Mercedes started using it in '92.

Kevin

[jrhaile]

the code did come up as a bad o2 sensor... thanks everyone