EGR Valve Problems
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EGR Valve Problems
I have a 2002 3.0 V6 Escape with 110,000 miles and the "Check Engine Light" is on. I have the infamous PO401 code. As I read on this site it is usually the DPFE. I replaced that, cleaned out the EGR valve and am still getting the code and along with PO402. I have checked the solenoid, and there is a rattling inside. Is this normal? If you plug the hole on the top of it, suction will go to the EGR valve and hold, so I know there are no leaks and the valve opens and shuts. Do I need a new solenoid or did I get a bad DPFE?
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Where did you purchase your new DPFE? Ford increased the warranty on the 2002 OEM DPFE by 24 months or 24k miles. They redesigned the DPFE due to this issue. I've heard of several people buying aftermarket DPFE's and they still had the same issue. Replacing with the improved OEM DPFE fixed their issue. Sounds like the aftermarket DPFE was designed exactly like the original OEM version...with the same results. If you picked up a DPFE at AutoZone for $30 then that is probably your issue.
If you had a leak, you "should" get a PO442. It might be a good time to replace the EGR anyway but the DPFE causes about 95% of the issues related to PO401/402 codes on the Escape.
If you had a leak, you "should" get a PO442. It might be a good time to replace the EGR anyway but the DPFE causes about 95% of the issues related to PO401/402 codes on the Escape.
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I should have mentioned that when I apply vaccum to the EGR valve, the engine will start to sputter and act like it is going to quit (for some stupid reason I thought it might be normal 
).
After some more research, I was reading under the Mazda Tribuite forum (from this site) that if you do this and the engine acts up, that it could be a bad EGR valve or carbon build up in the intake manifold. Would my problem most likely then be a bag EGR valve, or is there something else I am missing?
My car does have alot of mileage and I have had to have the front manifold converter replaced because it was plugged and the there was back pressure going in to the engine. Which caused poor accelleration and very bad lose of power. What kind of other damage could this have had done??
). After some more research, I was reading under the Mazda Tribuite forum (from this site) that if you do this and the engine acts up, that it could be a bad EGR valve or carbon build up in the intake manifold. Would my problem most likely then be a bag EGR valve, or is there something else I am missing?
My car does have alot of mileage and I have had to have the front manifold converter replaced because it was plugged and the there was back pressure going in to the engine. Which caused poor accelleration and very bad lose of power. What kind of other damage could this have had done??
Last edited by mcgeenl; Jul 30, 2006 at 12:23 AM.
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Joined: Aug 2002
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From: BC, Canada
If you apply vacuum to the EGR valve and it causes the engine to sputter badly or act like it's going to quite then it's working correctly.
By far the most common cause of a P0401 or 402 is a bad DPFE.
Like bananaboat said...go for the genuine Ford part that's been updated.
By far the most common cause of a P0401 or 402 is a bad DPFE.
Like bananaboat said...go for the genuine Ford part that's been updated.
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