How do you change dpfe sensor 1999 moutaineer?

Answer 1

Actually changing the DPFE sensor is remarkably easy, the hard part is getting to it in the first place. I have the exact same year Mountaineer, but mine is a 5 liter V-8 and I am not sure if you have the same engine. To locate the DPFE sensor look towards the firewall of the vehicle directly above the aluminum portion that says 5.0 liter V-8. It is bolted to that same aluminum portion but it is located on the firewall side. Now here is the hard part. In that same area you have a couple of wiring harnesses and the dipstick for the transmission, so you virtually have no room to play with. The driver's side bolt is not too big of a deal, the passenger side is a totally different story. Once I realized that, what I decided to do is to leave the old one attached and mounted the new one to the firewall. I didn't actually bolt it to the firewall, but found a way to secure it by using some liquid foam. Then all I did was reroute the electrical plug-in and the two hoses that were attached to the old DPFE sensor. Once I was sure the foam had time to set I started her up and it was smooth sailing. One side note, I did unhook the battery to make sure the CEL would reset. I took a mini roadtrip of about a 100 miles today and I am happy to say the new DPFE sensor took care of my problem. I have noticed a big difference in the sound of the vehicle with the new sensor also. It sounds a whole lot better now.