O2 sensor misbehaving.
#1
Pit Crew
Thread Starter
O2 sensor misbehaving.
My '98 es300 has lately been throwing a momentary, intermittent P0135 code. After a cold start, and driving for about 10 miles, or 20-30 minutes, it will light up the CEL. So I've left my OBD reader hooked up while driving, and can reset(clear) it immediately every time. Then 15-30 minutes later, it reappears. So, is this a tell-tell sign of impending permanent failure? Should I just bite the bullet and order a Denso replacement(s)? Should I go ahead and do BOTH upstream sensors? Not looking forward to this particular task, but oh well. Please chime in.
#2
Pit Crew
Thread Starter
Well, 3 weeks later, with no one commenting on my post, I went ahead a ordered the two upstream O2 sensors from Rock Auto. The front one took all of 5 minutes to replace. After jacking up and placing the front wheels on 6" blocks, working from underneath was okay. The rear bank however was much more "fun". I didn't need any special tool(socket) fortunately, a 7/8" combo wrench was fine. The electrical connectors were the hardest part to disconnect/reconnect. No rust or stubborn threads- also fortunately. That took about 30 mins. The only real issue was that afterwards, even with wearing a long sleeve shirt and mechanics gloves, my arms are black & blue and bloody! LOL! Other than that, we'll see if the CEL codes stay absent.
#3
Lexus Fanatic
What brand sensors did you get?
#4
Pit Crew
Thread Starter
Went with the Densos. $90/pr.
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tylojuky
ES - 1st to 4th Gen (1990-2006)
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08-30-16 07:45 PM