Folks,
I'm looking for a little input on my old work truck. I now have 174, 133 miles on her. F150 302 4R70W.
Recently I moved to Reno, NV, but still work in the bay area in California. When I go to work on Monday, and come down the hill coasting my SES light is coming on. This tells me I've got an EGR circuit error. I was thinking about starting with the DPFE before the EGR.
Would someone share their experience with this type of problem with me please?

 

What code/s exactly are you getting? 332 perhaps? and gotta ask just to be sure does your truck have the DPFE egr system? California emissions/truck so thinking it just might?

 

First, thanks for the push. I scanned it KOER, and it pulled a code 412 and killed the engine, so I did KOEO and it pull a system pass, but a stored memory code of 112.

 

112 ACT below minimum voltage / CM | KOEO

412 can not control rpm during KOER high RPM test / KOER

Nothing on EGR in those.

Do you have the DPFE sensor? You didn't verify.

If so did you check make sure both its hoses and the ports they connect to at both end are clear of any obstruction? Did you get a CM code for egr problem before you're not getting now?

How exactly did it react to the KOER test, odd it just died. Did the rpms change at all? When you say it killed the engine, be more specific please.

For example "RPM's started to climb then suddenly stalled out as if some turned off a switch/ran out of gas" or "RPM's never changed, sputtered a little and died", "RPMs went sky high as if uncontrolled and then it just died"

 

This is originally a California truck. Isn't the DPFE the vertical silver soleniod just to the right of the EGR?
The KOER code 412 showed up and the motor just died, no change in idle at all.
I should also mention it has hot starting problems. When fully warmed if I stop, and then start back up it will sometimes die before I get it into gear.

 

Do you see it here,

Fuel Injection Technical Library » Actuators

or look like this,

Ford DPFE Sensor (DPFE15)

 

Nope, none of what you posted is what I'm seeing. I'm beginning to think I've been smokin crack.
I've redone the scans and under stored memory I get 124 TPS, and under KOER I get 116. What's weird is when I do a capture it shows the TPS being .8. Isn't that where it should be? So here's a pic:
[img]http://www.scotthansen.net/images/ford.jpg[/img]
I thought it was the silver thing by the throttlebody, but I now think it operates the charcoal canister, and I do not have a DPFE.
I still don't get why I only get the SES light going downhill with no load on the motor? Could I have manifold leaks?

 

Ok I see what your lookin at in your picture, your talking about the canister purge solenoid and yes is for the charcoal canister. Its hose connected and no leaks?

Closed TPS should be between 0.5 and 1.0 volts yes so .8v is acceptable.

It should smoothly swing from its full closed value to a full open to a value of 4.0 to 5.0 volts, no blips or flat spots in between.

There is a resistance test for TPS too, your code claims voltage to "high" so I'd check full open too rather then just fully closed.

As for down hill foot off pedal, maybe a vac leak during high vac condition just as that would be.

You haven't complained of high idle so wouldn't think bottom of your metal can is gone.

How does the egr tube look, is it all there no big holes in it? You're not getting any codes for it suggests it working fine other wise. Computer would surely complain if not opening was detected via EVP for example.

 

Dan,
Thank you very much for your responses today. I'm going to replace the tps, and the cts next weekend.
The hose to the canister solenoid is crack, so I'll get that too.
I'm just hoping she goes two more years to keep miles off my newer one.
Have a great afternoon.