Ford told me my DPFE sensor is bad, but they wanted a HUGE amount of money. so i figured i would do it myself. i went and bought one, but it doesnt look like what i thought it was on my truck (99 F150, 5.4 ltr engine). what i bought is rectangular, bout 1 1/2 inches by 3 inches. the thing on my truck that has two hoses into it... the thing i THOUGHT was the DPFE sensore is round. anybody have a pic of one, or any suggestions?

thx

lateniteman

 

DPFE Sensor on a 1999 5.4L engine.

 

Yhup, the DPFE is a rectangular sensor with two hoses going to it (as in the picture).

Do notice one input on the DPFE is bigger than the other. You hook them up backwards and you'll get code P0401. The new sensor may not have the big & small input in the same position as the original. Often, the inputs on the replacement DPFE's are the opposite of the original.

 

Were you thinking of the EGR Valve Pressure Sensor ?

The little black flying saucer thing in the picture above.

Some times you might see DPFE is referenced as the EGR Transducer ?
I have no idea why, but some documentation shows this for some damn reason, maybe someone accidently posted a picture of a EGR Valve, and called it the DPFE ?? Maybe that is where you got your parts corssed ?

 

Are you talking about this, SScully?

 

Thought I was....did I get it wrong ?

 

That above picture is the EGR valve itself. The EVR is the thing between the DPFE and TPS sensor with two vacuum lines (one green, one red) going to it and a two pin electrical connector.

 

Just leave the pressure sensor part off. It can only open and close and cannot sense anything unless it is starring in a movie "Attack of the EGR valves" and is sensing the good meal its gonna have of somebodys brains. Yum, Yum. I call it a saucer thingamajig myself.

Quintin got it, "EGR Valve".

The EGR is connected to the "EVR" or (Electronic Vacuum Regulator). The EVR tells the EGR valve how much to open and close.

Here is a link to some good diagrams on a Ford Scorpio...

http://www.fordscorpio.co.uk/egrmonitor.htm

 

I thought the service DVD called it that. I thought the pressue sensor part was due to it having a diaphram in it. I was under the mis-understanding that it worked similar to my CV carbs on my bike, as far as amount of VAC that is got moved the diaphram... Like I said under the mis understanding.
Maybe I am thinking of a birth control device

Thanks for correcting me.

Steve

 

I had to do a little research myself. Things tend to fade away when I only work on the truck every few years.

 

and got it done.

sheesh... so the Ford dealership told me i had two ignition coils that were mis-firing, and that i needed to replace the DPFE sensor, and my air filter.. and they qouted me 600 bucks.

I did it all myself in about 45 minutes, and the parts cost me 150 bucks.

gee whiz... I know a mechanic has a right to make a living... but 450 bucks for 45 minutes of work? I must be in the wrong business.

 

The shop makes the lions share of that money. They charge by the book time and not by how much time it actually takes.

 

The guy spinnin' the wrenches would have been lucky to see 20% of that. The shop and the parts department are the ones who make the killing.

 

Actually the salesman who works the parts counter gets 10 to 15% commission on the parts he sells you as well..why do you think they tell you that you need new rotors when you go in to have your breaks done even tho they are brand new? lol . Whenever they tell me I need something I take it with a grain of salt and ask several more knowledgeable friends! Half the time I dont need what they say I do.

 

Way to bring up a 6 year old dead thread!