Hello and good day:
First may I suggest you just replace DPFe sensor first then the IAC (idle air control valve) if needed.
Originally Posted by schwanny30
I recently did some work on my car, replaced the EGR valve, and cleaned injectors, new coil pack and replaced some vacuum elbows and hoses. A week later I started getting P1506 error code idle air cntrl overspeed error. I am also getting a pending code P0401 EGR flow insufficient. I have used a hose to listen for leaks and to be honest I can't find any. Does anyone know if these are linked and if they are would it be in my best interest to start with the DPFE valve? If so I understand this to be buried in the back? Anyone have a pic of this location?
I should probably also mention that when I drive with the heat or air conditioning on I feel small jerks as I am driving at 55-60mph. Mostly with defrost only.
The Following was taken of the Website: WikiAnswers - Where to find and how to replace a DPFE sensor on a Taurus - Sable
What does it look like...
Where to find it on the 24v Duratec engine
- Rectangular box about 3" tall x 5" wide x 1" thick (very rough estimate)
- 2 vacuum hoses going upwards into the left side of the bottom
- Wiring connection goes into right side of the "face"
First, let establish that the front
of the engine has the serpentine belt - the opposite end is then the back.
The DPFE sensor then is mounted to a plate on the top right on the back
of the engine.
It is below the Throttle body and above the transmission dipstick height.
Where to find it on the 12v Vulcan engine
How to replace on a Duratec engine...
- Mounted to the backside of the Intake Manifold - and basically faces the firewall - about 2/3s the way towards the front of the engine.
- Readily accessible and easy to replace
- Don't forget to label the hoses as you take them off
Is there a way to test a DPFE sensor?
- Looking at my 98, I'm going to suggest it might be just as easy to remove the throttle body or upper intake manifold (UIM) to get access to the DPFE sensor.
Removing the UIM might be overkill, but having done it to change sparkplugs, I can say it's really not that big an effort. Disclaimer: I haven't changed a DPFE, so I'm somewhat speculating about access being difficult - just observing what it looks like )
- Remove the 2 mounting nuts
- LABEL the 2 vacuum hoses before disconnecting them from the DPFE
- Remove wiring connector
- Reverse to install (surprised? )
Yes, but too involved to try and repeat here.
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- or buy a manual.
It is behind the upper intake between the intake and the firewall. Hard to get to without removing the upper intake. Remove the eight 8MM bolts holding down the upper intake, loosen the hose clamp connecting the intake tube to the throttle body, and unbolt the EGR valve. Then move the upper intake out of the way while disconnecting the 3 vacuum lines under and to the rear of the intake near the throttle body.
The DPFE sensor is located below the throttle body and intake plenum, near the fire wall on the back side of the engine. It will have two places for vacuum hose connection. both pointing downward and a electrical connector on it's face pointing towards the drivers side of the car.
There is actually 2 different V6 3.0 liter engines. One is a 12 valve and one is a 24 valve. On the 12 valve the dpfe is behind the upper intake manifold, between the engine and firewall close to the middle of the car. On the 24 valve it is down below the throttle body area, almost completely hidden by hoses and wires and stuff. Look right below where the air snorkel attaches to the throttle body, toward the friewall slightly. It's down in that area on the 24 valve engine.