O2 Sensors

Sensor was already replaced. Mileage went down afterwards.

OK thanks

How many O2 sensors on the truck listed above STX model, regular cab?

Where is the location of the heated oxygen sensor Bank 1 Sensor 1. Is it on the drivers or passenger side of my 2006 F150 5.4l v8?

I have a 2004 Ford F-150, 4.6. It’s reading codes 2195 and 2197 which are O-2 sensor codes. I’ve replaced both #1 O-2 sensors, the MAF sensor, the fuel filter and all suspect Vacuum hoses. I’ve also checked for Vacuum leaks, cleaned the ICV and EGR valve. The fuel pressure is 38 (should be between 30 and 40). Checked the temp. In front of and behind the Catalytic Converter ( under 100 degrees difference). I’ve invested a lot of money in parts that have not resolved the problem. Can I check the ICV by connecting it to a battery and see if *** is fully opening? I’ve checked the ohms (reading 10.1 †2prong). I could sure use some help ! Thanks

I'm sorry I should have said The truck is ideling worse then before. When it's first started it will idel fast then very rough at around 1000 rpms then die.

I've sprayed carb cleaner all around the intake and presure checked the elbow at the PCV. I've ordered a new PCV and will try that tonight. (Nobody had on in stock). I think I, ve done a good job of checking for a vacuum leak but I'll try again.

Any other ideas?

Thanks.

I have a 2004 F150 with 52000 miles and just recently the engine light came on, I took it to a shop and had them hook it up to a computer and it said it was my oxygen sensors. I decided to take it to the shop, before I could get it there the light came off. I decided to not ake it to the shop but a month or so later it came back on. I made a appointment with Ford which I had to wait a month for, before the time of the appointment it came back off again. Finally the day came I went to my appointment and of course waited 5 hours just for them to tell me that it was my Thermostat stuck open. I told them I had it looked prior to my appointment and the computer said it was my O2 sensors. I'm not completely dumb when it comes to working on vehicles but I've never heard of a Thermostat stuck open could cause a vehicle to run rich which would make the computer put out a code for the o2 sensors. Just the other day after they had replaced the Thermostat the light came back on again for the same o2 sensors?>? Is it possible for a vehicle to run rich because of a Thermostat stuck open?

The code is P0420. I've looked it up and read about this code. My truck only has 52000 miles and the cat is going bad already? That is just ridiculous. I do have a extended warranty but i'm sure it doesn't cover cats, however. Does anyone know if it should still be covered through ford since it has so little miles on it? I have a appointment for my truck here in a couple days, but it's not at Ford cause I waited so long there just to get a Thermostat changed. I'm also going on a 3000 mile drive here in a couple weeks, I was told that it just might need to be driven for a long while since maybe the cat isn't getting hot enough, but I don't want to risk breaking down on the road. Would it hurt my truck if the cat is doing what it is doing and I still drive the mileage?

Electrical problem
2004 Ford F150 V8 Two Wheel Drive Automatic

how long can you drive your truck with the O2 sencer bad?

My truck start to shake real bad when I was driving down the road and my oxygen censors are going bad and my dad said that it was missing. Would my oxygen sensors be causeing it to do that? Are what could it be?