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Old 07-04-2012, 12:01 PM
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Egr valve

I'm getting a bit of black smoke with egr plugged in. Was gonna unplug it for an upcoming river trip, about 300 miles, while pulling trailer. Wondering if there was any downside or upside to this.
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Old 07-04-2012, 12:17 PM
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you didn't post your specs
but possible cooling fan issues and you may throw a CEL so if any other issue arises you won't know about it since the CEL is already lit
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Old 07-04-2012, 12:50 PM
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It does throw a code. Insufficient flow. Not worried about that. Just curious about performance. 2004 f350 fx4.
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Old 07-04-2012, 02:37 PM
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It could cause electric fan clutch command problems if unplugged, depending on what strategy you have.
Have you tried cleaning the valve?
DTS Articles - 6.0L EGR Valve Cleaning
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Old 07-04-2012, 03:54 PM
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I have pulled out and cleaned 2x. Still smokes when plugged in
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Old 07-04-2012, 04:33 PM
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cleaned doesn't always mean it is working OK
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Old 07-04-2012, 06:17 PM
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I know its not working right, that's why I want to know of unplugging it will.be bad, cause I know it stops the smoking
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Old 07-04-2012, 06:30 PM
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no it won't be bad .. but if your ECT increases you will know why but it doesn't increase a lot ,, so give it a go ,, however just remember it may be stuck a little open so I would check it /clean it / unplug it
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Old 07-21-2012, 05:16 PM
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Quote:
Originally Posted by NYC F-350 View Post
It could cause electric fan clutch command problems if unplugged, depending on what strategy you have.
Have you tried cleaning the valve?
DTS Articles - 6.0L EGR Valve Cleaning
Great article !!!! Have a question as to trying to clean the carbon gunk in EGR bore in the intake manifold. Just finished doing a minor cleaning operation of the valve itself by using brush and gently scraping carbon deposits & looks pretty good. Can't say the same for area around bore in manifold where valve is seated. Needs to be cleaned but only way I think might work is with very small fabricated crevice tool on vacumn and a small tool to dislodge carbon so vacumn can capture it. Any thoughts from anyone else on this?? Yes, I know ...... hand my mechanic my wallet so he can remove intake manifold to clean it. There has to be a better way to deal with a spot area. Also, NYC .... is there any info out there as to exactly how valve is designed to operate?? This is the first time for me and I could do a better job if I understood the operation of the device. Thanks in advance all !!!!

Avsnips
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Old 07-21-2012, 07:59 PM
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Quote:
Originally Posted by avsnips View Post
Great article !!!! Have a question as to trying to clean the carbon gunk in EGR bore in the intake manifold. Just finished doing a minor cleaning operation of the valve itself by using brush and gently scraping carbon deposits & looks pretty good. Can't say the same for area around bore in manifold where valve is seated. Needs to be cleaned but only way I think might work is with very small fabricated crevice tool on vacumn and a small tool to dislodge carbon so vacumn can capture it. Any thoughts from anyone else on this?? Yes, I know ...... hand my mechanic my wallet so he can remove intake manifold to clean it. There has to be a better way to deal with a spot area. Also, NYC .... is there any info out there as to exactly how valve is designed to operate?? This is the first time for me and I could do a better job if I understood the operation of the device. Thanks in advance all !!!!

Avsnips
You can clean some of the intake with a scraper and vacuum, but you won't be able to get a good cleaning of the intake runners. To clean spotless, you would need to remove the intake.



This link will take you to the coffee table books, click on the '03 book. Scroll down to the EGR function.
http://www.forddoctorsdts.com/articl...icle-06-08.php
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