o2 sensor
Hotshot
Joined: Jan 2004
Posts: 19,760
Likes: 1,079
From: St Louis
..and, unless you have valid fault codes, you'll likely be wasting your money trying the wrong way to fix a problem.
Supply details, we can take most of the risk out of your repair attempt.
Steve
Supply details, we can take most of the risk out of your repair attempt.
Steve
Hotshot
Joined: Jan 2004
Posts: 19,760
Likes: 1,079
From: St Louis
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Logistics Pro
Joined: Oct 2000
Posts: 3,960
Likes: 5
From: All over Texas
FWIW, I have my original sensors in my 135k mile Expy. Over the years I've read many accounts whereby posters mention improved performance and mileage after replacing O2 sensors. I cannot confirm or deny their statements, all I can say is my performance and mileage have always stunk....hot & humid days being the worst.
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Junior User
Joined: Dec 2006
Posts: 65
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From: Southern NJ
I recently replaced the upstream 02's on my 98 E350 van (v10). Giving me about 1 mpg or more better. Need to do the plugs too - Oye what a job.
No hp unless there is a code somewhere, could/probably is showing you need maintenance:
fuel filter
oil filter
air filter
clean MAF sensor
plugs
clean TB
check vacuum lines
clean fuel system or take injectors out and have them cleaned.
change/flush tranny fluid
could change 02's if mileage is high enough - they do become less efficient over time, even though they work good enough not to trhow a code
Do the basics and see what happens. You and your truck will be happy
No hp unless there is a code somewhere, could/probably is showing you need maintenance:
fuel filter
oil filter
air filter
clean MAF sensor
plugs
clean TB
check vacuum lines
clean fuel system or take injectors out and have them cleaned.
change/flush tranny fluid
could change 02's if mileage is high enough - they do become less efficient over time, even though they work good enough not to trhow a code
Do the basics and see what happens. You and your truck will be happy
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