97 i30 bad left o2 sensor, knock sensor

[twilly]

Just got news from the Infiniti dealer (before learning about this forum) -- about $750 to replace the left front o2 sensor and the knock sensor.

Question is: for a person who's only really done things like oil changes and brake shoe replacements, is this a job for a pro, or can I do it?

Any instructions/advice would be greatly appreciated.

[elwesso]

Knock sensors are under the intake manifold, and will probably be somewhat daunting..... You could probably do it, but you gotta take your time and be patient......

[Grambos13]

o2 sensor should be cake...should take about 30min at most. Knock sensor depending how hard it is to get shouldn't take too long either. All it is is 1 bold and the plug and its off.