So I have picked up a 92 f250 with a 5.8l, southern cab swap, jasper 5.8 and rebuild e4od.

Almost all the emissions stuff is deleted on this truck. I'm not going to bother trying to reconnect the air system but will get the egr system back in order.

This truck has the O2 sensor deleted... I want to reinstall one as the truck runs really rich, I cannot find where the factory pigtail would be, can someone provide me with a photo of where I should look? I checked on the passenger side of the y pipe above the tranny because that's where it was on my 460.. With my luck he probably chopped the pigtail off too so maybe a wiring diagram would be helpful also.

Here's pictures of said vehicle as promised

 

Friggen morons.. why do people do this? Look behind the battery to see if there is a small wiring loom following the ground cable to the chassis and then continuing on back on or inside the frame, this would be the O2 harness. If there is no cable there is there a round 4 pin connector hanging with nothing plugged in?

 

Thanks Paul, I agree with you. It takes more time to delete this stuff than it would just to fix it. I will check today for the harness, there was no O2 pigtail in the vicinity of where it should have been so I am hoping I can find the harness and it be salvageable enough to solder a junkyard pigtail back onto it.

I'll let you know my findings when I can get back to the truck, thanks.

 

Just found the pigtail I think you were referring

to.

Think I might be onto something here



First picture is referencing its location near battery

 

That's it. Now you just need to install a sensor and plug it in.

 

How many miles were put on it without the sensor in/plugged in? Unless he had a chip and custom tune to bypass the O2, it should have been running in limp mode, or not running at all.

 

You can run it with o2 unplugged, it'll just always stay in open loop. Deleting the egr altogether causes the most issues. Plug the egr with a penny, and leave the rest of it in tact and maintained.

 

This is great news. Do you guys know which O2 sensor I need? When I try to look up a sensor on advance or Azones website it gives me 3-4 different Bosch sensors that look identical but have different part numbers. What I did find is that some have a different harness length.

 

Go to Official Ford Parts Site | Buy Motorcraft & OEM Ford Parts Online | FordParts.com and enter your VIN. Then look for the part you need. You can buy it there or if not then you'll have the Ford part number and either look for that same part elsewhere like Amazon or your dealer or you can cross-reference it to a different brand.

 

Thanks 460, I'll post back after I get one installed hopefully it will make the truck run better.

 

Well just to update. I went to the junkyard and pulled the harness that runs from the fender down to the O2 sensor out of an f150. I then bought a new sensor and installed everything , the truck seems to accelerate much better and have a better throttle response, hopefully my gas mileage will increase now as well since the truck won't constantly be in open loop.

Unfortunately my front tank fuel pump is about dead and I will be replacing that within the next few days, does anyone have experience with the reliability from the fuel pumps sold at advance auto?

 

The pumps that advance sells are junk, no doubt about it. That said, I've been running them for years now. The glory of having 2 tanks is the ability to get home when one fails. My rear pump worked for about a year, replaced that with one from rock auto, I believe a delphi. The front worked for a few years until I had to replace the tank, at which point I got a spectra tanl pump combo. I'm sure the spectra is junk too....

If the dealer didn't want 450 for a pump assembly, I wouldn't run the junky aftermarket pumps.

 

Thanks for your response, that's what I've been reading is that they're junk. It's a shame because the price is $129.99, not sure what I'm going to do since I need to install something by Thursday and don't have the time to wait from ordering online.