02 Sensor questions
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Freshman User
Joined: May 2003
Posts: 42
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02 Sensor questions
I crawled underneath my 1990 F150 with the 302 and 5 speed today and found my O2 sensor. I have a couple of questions.
1) How do I pull the cables out of the sensor?
2) I have a small rear main seal leak that just happens to run down my O2 sensor cable. I'm not in a position to replace the seal right now, so should I replace the sensor now or later?
The reason I ask is that my gas mileage is about 7-9 mpg and I'm willing to bet its the stock sensor. At 146,000 miles - it had a stock fuel filter.
thanks
ken
1) How do I pull the cables out of the sensor?
2) I have a small rear main seal leak that just happens to run down my O2 sensor cable. I'm not in a position to replace the seal right now, so should I replace the sensor now or later?
The reason I ask is that my gas mileage is about 7-9 mpg and I'm willing to bet its the stock sensor. At 146,000 miles - it had a stock fuel filter.
thanks
ken
Post Fiend
Joined: Nov 2001
Posts: 14,947
Likes: 6
From: Topsfield, MA
02 Sensor questions
There should be just a connector 5-10" away from the sensor to disconnect it. You need to buy or rent a special socket to remove it. Spray some penetrating lube on it for a few days, it'll be a toughy to get out.
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
02 Sensor questions
The oil on the sensor won't hurt it - why do you even want to change it? It should come out easily with a 7/8" (I think) open-end wrench, but if it's stubborn, I prefer Liquid Wrench penetrating oil.
