I've had a check engine light on one of my cars for a few months. Checked it out with an OBD reader and knew it was an O2 sensor at the back of the engine. Really didn't fancy changing it as it's at the back of the engine and most people recommend removing the intake manifold for access. As this weekend might be one of the last sunny ones of the year I decided I should just get it done. Ordered the sensor online, arrived fine. Yesterday I set about tackling it. I found the sensor, unplugged it and managed to attach a slotted sensor socket without removing the intake manifold. Then set about a gruelling 3 hours of knuckle scraping, elbow bashing fun trying to unscrew the damn thing. Gave up in the end! This morning feeling fresh I tried again... undid it and had the new one screw in within 2 mins
Every single time I try to avoid dismantling an engine bay for access and think I can just manage I always regret it and the job ends up taking an extra 3-4 hours
While using one of my other cars last night I heard a grumbling noise from the engine bay... looks like I have a noisy water pump. So that looks like a job for next weekend :\ I hate doing water pumps!