Lucas007

Anyone have a DIY way to replace O2 sensors?

MarcusF

An O2 sensor socket and a breaker bar. That's it.

CurYousGee

Hey Marcus, I may need to do this soon as well, do you have a diagram of where the O2 sensor are located? I know 2 are pre-cat and 2 are post cat for a total of 4. Also do I get the O2 sensor socket at the stealership?

thanks

tnb1786

how much did u guys pay for ur o2 sensors and which ones did u get the connector ones or the 4 wires...i bought the 4 wire ones cuz i was a cheap ******* at the time. i hear there not good though. could sumone shed sum light on this. cuz the stealership charges $150 per sensor

ratha67

I've never replaced mine. Haven't yet had to. If you get the ones without the connectors, its probably as easy as cutting the connector off the sensor that you pulled off.

But after doing an Ebay search, I'm wondering why some of the 02 sensors sold without connectors that supposedly fit our cars have 1 wire, some have 2 wires, and some have 4 wires. Don't our 02 sensors have 4 wires that go into the connectors? I know autohausaz sells them specifically depending on their locations. But it looks like the cheapest place is Ebay.

http://www.autohausaz.com/search/pro...xygen%20Sensor

I got no clue. You guys that have it figured out, be sure fill us in. I'm probably going to have to replace my 02 sensors sometime soon.

Serndipity

Just had mine changed at dealer under 8 year / 80K warrany (by law).

See this link (listen to the audio link as well.

http://wbz.com/pages/2160021.php?

The Mercedes and Audi O2 sensors are the planar type and seem to fail with gas that has to much ethanol.

MarcusF

The arrows point to the O2 sensors. Most automotive tool places carry an O2 sensor socket - Sears, Kragens, Pep Boys, etc. As long as the exhaust is cool, it should come right out.

CurYousGee

sweet! this should be a sticky...thanks again marcus