EGR Disconnect = Engine Light
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Freshman User
Joined: Jun 2004
Posts: 48
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From: Topsfield, Maine
EGR Disconnect = Engine Light
Unplugged my EGR valve yesterday and it made my engine light come on. So I plugged it back in and the light went away after a few starts. Did anybody else have their light come on? My truck is an 04/04 F350. I believe I read of somebody getting a failed EGR valve someplace and using that?
Post Fiend
Joined: Apr 2004
Posts: 19,098
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From: Great State of Texas
Go to the EGR Disconnect sticky on 6.0 forum page. Much duscusion there. Lots of reading. Some getting light...some are not.
Did you unplug while engine off?
FYI: No check engine light for me.
Did you unplug while engine off?
FYI: No check engine light for me.
Junior User
Joined: Jan 2004
Posts: 70
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From: Roy, Washington
No Light
Have an 01/04 engine build date bought in Kent Washington. No Light. Am anxiously awaiting my Predator to check for codes. 
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Junior User
Joined: Jan 2004
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From: Roy, Washington
EGR codes
Originally Posted by jdadamsjr
fordsd - you WILL have egr codes... but they don't effect the performance - have had my egr disconnected for about a month now with no ill effects...
Post Fiend
Joined: Oct 2002
Posts: 11,314
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Oh, by all means...
You should ALWAYS reconnect egr, restore stock program, and clear codes (in that order) before service --- ALWAYS !
And clear codes once more after going back to stock to ensure they ARE cleared...
you don't want the dealer install a new flash and then it doesn't match your predator stored original flash...
your predator would stop working with your truck,
you'd be driving a stock truck,
and you'd probably be red flagged and lose your ford warranty...
but other than that - it's up to you
You should ALWAYS reconnect egr, restore stock program, and clear codes (in that order) before service --- ALWAYS !
And clear codes once more after going back to stock to ensure they ARE cleared...
you don't want the dealer install a new flash and then it doesn't match your predator stored original flash...
your predator would stop working with your truck,
you'd be driving a stock truck,
and you'd probably be red flagged and lose your ford warranty...
but other than that - it's up to you
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