Replace Sensors
Thread Starter
|
Junior User
Joined: Mar 2006
Posts: 50
Likes: 0
From: Eagle River, Alaska
Replace Sensors
My 93 F150 I6 has been running rough.
The truck was previously owned by my father in law who owned the truck from day one.
I want to replace all of the sensors on the truck as they are all original and the truck has 125 K miles.
Where should I start and is there a manual that lists all of the sensors that will need to replace?
I would like to start with the O2 sensors as the truck does not leak oil, doesnt burn oil, doesnt run hot etc..
Thanks guys!
The truck was previously owned by my father in law who owned the truck from day one.
I want to replace all of the sensors on the truck as they are all original and the truck has 125 K miles.
Where should I start and is there a manual that lists all of the sensors that will need to replace?
I would like to start with the O2 sensors as the truck does not leak oil, doesnt burn oil, doesnt run hot etc..
Thanks guys!
Thread Starter
|
Junior User
Joined: Mar 2006
Posts: 50
Likes: 0
From: Eagle River, Alaska
Ya, I already did that.
Replace Cap, Rotor, plugs, cables, fuel filter and air filter.
If I hook it up to a computer to test it will the codes tell me what sensor is bad?
Replace Cap, Rotor, plugs, cables, fuel filter and air filter.
If I hook it up to a computer to test it will the codes tell me what sensor is bad?
Tuned
Joined: Jan 2006
Posts: 290
Likes: 1
Hey cold guy. If you are just itching to wrench on your truck, I know of a sensor I would start with. It's the sensor that lives in the thermostat housing at the front of the motor. It tells the computor how cold/hot the coolent is and regulates how much fuel is fed. I am sure that you only want to change one thing at a time when you are trying to find a problem, right? See the post Thermostat Housing two post older than this post. Side note: To bad these post are not numbered in series, that is to say the first post is allways number 1. Ever try to go back to a old post? The numbers allways change! It's probley just me, right....
Moderator
Joined: Aug 2002
Posts: 6,104
Likes: 384
From: Southern California
I agree with checking the codes, here's the ones I would recommend replacing due to age...
Coolant temp
Speed sensor
Oxygen sensors
throttle body position sensor
idle air control valve
Coolant temp
Speed sensor
Oxygen sensors
throttle body position sensor
idle air control valve
Elder User
Joined: Sep 2003
Posts: 926
Likes: 3
From: SE, Michigan
Pull codes first, it will tell you what is wrong. Go to fordfuelinjection.com and follow the steps on how to pull the codes. Its very easy only takes 10 minutes. Go from there, no reason to spend money on parts that are working just fine. My 95 F150 has over 148,000 miles and i've only replaced 2 sensors, O2 and TPS sensor. The rest are all orginal. Same thing with my dads 92 F150, only sensor that has been changed is the O2 and both trucks run just fine.
Thread Starter
|
Junior User
Joined: Mar 2006
Posts: 50
Likes: 0
From: Eagle River, Alaska
Trending Topics
Post Fiend
Joined: Mar 2004
Posts: 24,418
Likes: 3
From: San Francisco, Ca.
coldnorthpole, definitely do the computer test to see if any sensor/switch should be replaced.
The only sensor I replaced on my 81 F150 4.9 was the oxy sensor.
It didn't fix my problem, which was a broken ground wire for the MC solenoid.
Maybe a fuel injector is clogged.
The only sensor I replaced on my 81 F150 4.9 was the oxy sensor.
It didn't fix my problem, which was a broken ground wire for the MC solenoid.
Maybe a fuel injector is clogged.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Post Fiend
Joined: Jul 2004
Posts: 8,786
Likes: 28
From: Northern California
An O2 sensor is supposed to be a Tune Up Item.
Replace it when you have a tune up, or at the recomended mileage for replacing one.
They can, and will, plug up with exaust gases and give the computer a false reading. Usually a false lean reading, and the computer, mistakenly dumps the gas in (richen the mixture) to compensate.
Depending on what year your truck is, the computer may not give you a code for a O2 sensor, or give you a code saying, Always lean or rich.
Hope this helps,
Replace it when you have a tune up, or at the recomended mileage for replacing one.
They can, and will, plug up with exaust gases and give the computer a false reading. Usually a false lean reading, and the computer, mistakenly dumps the gas in (richen the mixture) to compensate.
Depending on what year your truck is, the computer may not give you a code for a O2 sensor, or give you a code saying, Always lean or rich.
Hope this helps,
Post Fiend
Joined: Mar 2004
Posts: 24,418
Likes: 3
From: San Francisco, Ca.
I'll have to check my owners and shop manual on replacing the 02 sensor.
I'm still on the second one with no problems.
I think the first one is still good.
I know the older GMs had a warning light that would pop on every 20k miles to remind you to change the 02 sensor.
I'm still on the second one with no problems.
I think the first one is still good.
I know the older GMs had a warning light that would pop on every 20k miles to remind you to change the 02 sensor.