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EGR valve

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Old 04-11-2007, 12:31 AM
mean green2 mean green2 is offline
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EGR valve

On a 99 f-150 with a 4.6L i think i no where the egr valve is but not sure. Can someone tell me for sure where it is..... Thanks
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Old 04-11-2007, 06:01 AM
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Left side, rear, on the intake manifold. Look for the metal "pipe" covered with insulation that attaches to it.
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Old 04-11-2007, 06:02 AM
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Take the plastic cover off the top of the engine and its the round saucer at the back on the driverside. What kind off problems are you having?
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Old 04-11-2007, 07:19 AM
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EGR valves seldom fail.

If AutoZone told you it was bad, start over with your diagnostics before you waste your time and money.

Steve
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Old 04-11-2007, 11:46 AM
mean green2 mean green2 is offline
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My girl friends truck is throwing a (p0401 i think) gas recirculation code at 121000 miles, so i figured i would pull it off and clean it and start there...

Last edited by mean green2; 04-11-2007 at 12:15 PM.
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Old 04-11-2007, 02:16 PM
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Most likely, it's either a bad DPFE sensor or clogged intake ports, or both.

Steve
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Old 04-17-2007, 11:54 AM
mean green2 mean green2 is offline
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I just wanted to say thanks for the help, i cleaned the egr valve and the ports and its running great now.
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Old 04-18-2007, 06:30 AM
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So I didn't read this post before going to Autozone and I replaced the old EGR valve with a new one. I then reset the idiot light (unhooked battery) and for half a day it stayed off then later that night it came back on. I just about punched the insterment panel. But I should have known since you all gave me fore warning.

So where do I go from here. Is there something to do with the DPFE? Do I need to through more carb cleaner in the EGR system?

Is there something, anything, to clear this out? Stinking AutoZone for making me do this. Just kidding it isn't neccasarily autozone's fault.
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Old 04-18-2007, 09:43 AM
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Quote:
Originally Posted by WebbySupercrew
So I didn't read this post before going to Autozone and I replaced the old EGR valve with a new one. I then reset the idiot light (unhooked battery) and for half a day it stayed off then later that night it came back on. I just about punched the insterment panel. But I should have known since you all gave me fore warning.

So where do I go from here. Is there something to do with the DPFE? Do I need to through more carb cleaner in the EGR system?

Is there something, anything, to clear this out? Stinking AutoZone for making me do this. Just kidding it isn't neccasarily autozone's fault.

What code do you have? Can't do anything but guess at your problem without it. Then you will be throwing more parts at it. Gets expensive.
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Old 04-18-2007, 10:45 AM
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Quote:
Originally Posted by WebbySupercrew
So I didn't read this post before going to Autozone and I replaced the old EGR valve with a new one. I then reset the idiot light (unhooked battery) and for half a day it stayed off then later that night it came back on. I just about punched the insterment panel. But I should have known since you all gave me fore warning.

So where do I go from here. Is there something to do with the DPFE? Do I need to through more carb cleaner in the EGR system?

Is there something, anything, to clear this out? Stinking AutoZone for making me do this. Just kidding it isn't neccasarily autozone's fault.
If you have the same code i did getin your parts from autozone could be your problem....
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Old 04-18-2007, 10:58 AM
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Simple test: Unhook the vacuum line from the EGR valve and connect a short piece of hose to the EGR valve port. Run engine at an idle and suck on the vacuum line. If the EGR valve is functional AND the ports are clear (enough), the engine will stumble or even stall and your "Insufficient Flow" code is most likely due to the DPFE sensor. If it doesn't change, remove the throttle body and clean the EGR ports.

Ford's DPFE sensors from a couple of years ago were crap and failed enough to have gotten an extended warranty for certain years. Tech pubs simply told the tech to replace the sensor automatically in the event of certain codes, TEHN test for proper operation.

The new-style DPFE sensors from Ford are made of plastic and are much improved. I highly recommend using ONLY the new Ford design instead of an aftermarket device, at least until it is determined whose sensors Ford is buying as replacement parts. Once that happens, I'll add that brand to my recommended list.

Steve
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Old 04-18-2007, 11:05 AM
rsylvstr rsylvstr is offline
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what's a DPFE and does my truck have one?
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Old 04-18-2007, 11:31 AM
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DPFE is a Digital Pressure Feedback EGR sensor and yes your truck has one.
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Old 04-18-2007, 11:32 AM
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Thanks projectSHO89 and RanchMan for all your help so far.

I will try your trick of putting a hose on the EGR valve and sucking on it and see if that does what you explained it should do.


Quote:
Originally Posted by KingRanchMan02
What code do you have? Can't do anything but guess at your problem without it. Then you will be throwing more parts at it. Gets expensive.
As for the spacific codes, I do not know since they at Auto Zone just said the read out was EGR Valve. I did see that on the computer too but didn't pay enought attention to the specific code numbers. Sorry!!! Lesson learned!

Last edited by WebbySupercrew; 04-18-2007 at 11:34 AM.
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Old 04-18-2007, 02:21 PM
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Quote:
Originally Posted by KingRanchMan02
DPFE is a Digital Pressure Feedback EGR sensor and yes your truck has one.
DPFE = Differential Pressure Feedback EGR Sensor,

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