EGR Valve Insufficient code

[Ford_Fairlane]

Hello, I have a 2003 Focus with Ztec engine 2.0 and my check engine light came on, took it to a small shop and the mechanic put his scantron tool on it and it read the code of "EGR insufficient flow"

The EGR valve is very rusted, he said the part has to be ordered from the USA and takes about a week. He turned off the code.

Just wondering how important is this part to get replaced ASAP? and could things get worse with the car as time goes on not replacing it with in a normal time period.

Thanks

[01slo-cus]

If you have emissions checks then yes, it is important. Otherwise, it shouldn't cause too much of a problem to wait to fix it. I have mine bypassed all together (no emissions checks here ) and it's never been an issue.

[hEaT]

That sounds like a failing DPFE sensor.

http://www.focushacks.com/index.php?...%20Information

I had the same code on my car and a new DPFE sensor fixed the problem. If you contact FORDSVTPARTS here (Steve from Tousley Ford), he can get you the best price on OEM Ford parts.

[Ford_Fairlane]

Thanks for the info guys. The check engine light came on again after he turned it off. It came on when i was driving and decided to turned on the fan on for some heat, within seconds the check engine light came back on.

Oh well gonna get it fixed regardless

[bbbrrrmmm]

not to take away from the OP. my 03 ford focus (i gues 2L) 4cylender auto. i gues the none special Z engine. but anywhays, my check engine light came on and i got a code P0401 (exhaust Gas Recirculation flow insufficient detected) .

does it sound like its likely the?:

• EGR Vacuum Solenoid or
  
• EGR Valve

?/?

[hEaT]

Originally Posted by bbbrrrmmm

not to take away from the OP. my 03 ford focus (i gues 2L) 4cylender auto. i gues the none special Z engine. but anywhays, my check engine light came on and i got a code P0401 (exhaust Gas Recirculation flow insufficient detected) .

does it sound like its likely the?:

• EGR Vacuum Solenoid or
  
• EGR Valve

?/?

DPFE sensor

[bbbrrrmmm]

so the DPFE is this thing:

EGR Valve Pressure Sensor

right?

i looked under the hood of my car yesterday and that part looks still new. but the EGR valve looks a bit rusty. any other thoughts?

[hEaT]

Originally Posted by bbbrrrmmm

so the DPFE is this thing:

EGR Valve Pressure Sensor

right?

i looked under the hood of my car yesterday and that part looks still new. but the EGR valve looks a bit rusty. any other thoughts?

Yep, that's it. My EGR valve was rusted as anything, but still worked fine.

[Johndu]

I have the same proplem. Replaced the DPFE and still get the code. How do you test the EGR valve? Also, read that carbon build up in manifold should be cleaned. Where is the manifold nad how do you clean out the carbon?

Thanks!

[GapBoyPCS]

Originally Posted by Johndu

I have the same proplem. Replaced the DPFE and still get the code. How do you test the EGR valve? Also, read that carbon build up in manifold should be cleaned. Where is the manifold nad how do you clean out the carbon?

Thanks!

Did you scan the car's computer first to verify it was, in fact, the same code?

If you just did a straight replacement of the DPFE sensor, you need to clear the car's computer of any error codes, and then let the car operate to see if the code comes back.

I haven't heard of carbon build-up in the manifold being an issue. What engine and Focus do you specifically have?

[Johndu]

I did clear the code, it is the same P0401. I have the DOHC 2.0l engine Ford Focus SE 2002

[Johndu]

Actually, the site states to "Remove the throttle body and gasket. Behind the gasket you will find a half moon shaped passage with 3 openings into the intake manifold. Most likely you will discover that the passages are clogged with carbon buildup. Clean out the passages with a small pick and some throttle body cleaner. Then, install a new gasket and the throttle body."

The site was http://www.ricksfreeautorepairadvice...ogged-passages

Where is the throttle body, and how do you remove to clean the intake manifold?

[GapBoyPCS]

Originally Posted by Johndu

Actually, the site states to "Remove the throttle body and gasket. Behind the gasket you will find a half moon shaped passage with 3 openings into the intake manifold. Most likely you will discover that the passages are clogged with carbon buildup. Clean out the passages with a small pick and some throttle body cleaner. Then, install a new gasket and the throttle body."

The site was http://www.ricksfreeautorepairadvice...ogged-passages

Where is the throttle body, and how do you remove to clean the intake manifold?

That website appears to be discussing that problem and remedy for engines that are NOT those of the Focus:

This problem is common on the 2.5, 3.0 Duratec, and the 4.6 liter engines.

The throttle body is actually at the end of the air intake tube. From the airbox, just follow it past the corrougated part, and the 90-degree bend. Where it clamps onto is the throttle body.

That all being said, you may want to search around the forum. Someone had an issue with this recently:

http://forums.focaljet.com/team-tech...ular-code.html

[Jason86]

There is also a rubber line that runs from the egr valve to the DPFE sensor. Check that for any holes, or cracks in the line. I bought an EBAY ram intake that didnt come with any kind of mounting bracket, and it actually sat on top of that line, wearing a hole in it. I was throwing that code, changed the line (and the intake) and was fine... Not saying that you have an intake like I had, just sayin it could be somethin as easy as a hose...

[frdfocszx3]

Disconnect and blow out both rubber hoses that go to the sensor. Sometimes condensation-water gets trapped in there. It happened to my zx3.