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Old 11-24-2010, 10:32 AM
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egr bad or maybe something different dtc p1335

Pulled code p1335 which in my research is egr position sensor. Before I buy a new egr valve or delete I want to see if my stalling from park to reverse and drive continued with the egr unplugged. Shouldn't unplugging the egr before you start the truck rule out an open valve. Problem still occured. Pulled the valve and it wasn't to bad. I have read a bunch of threads on moisture in intake means egr cooler. I didn't notice visual moisture however putting my finger inside the manifold and scraped off what seemed to be sticky carbon. I just want to get some facts before buying a new valve. I've learned a lot off this forum already and am eager to learn more. I guess I should say symtoms are stalling from park and no power to start with a lot of black smoke when first starting out. Littlee bit of chugging on deceleration
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Old 11-24-2010, 06:19 PM
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Quote:
Originally Posted by RL06 View Post
Pulled code p1335 which in my research is egr position sensor. Before I buy a new egr valve or delete I want to see if my stalling from park to reverse and drive continued with the egr unplugged. Shouldn't unplugging the egr before you start the truck rule out an open valve. Problem still occured. Pulled the valve and it wasn't to bad. I have read a bunch of threads on moisture in intake means egr cooler. I didn't notice visual moisture however putting my finger inside the manifold and scraped off what seemed to be sticky carbon. I just want to get some facts before buying a new valve. I've learned a lot off this forum already and am eager to learn more. I guess I should say symtoms are stalling from park and no power to start with a lot of black smoke when first starting out. Littlee bit of chugging on deceleration
The black smoke may be a stuck turbo look here.
Diesel Technician Society
2 stroker
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Old 11-28-2010, 04:56 PM
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It is your egr valve, most likely a piece of carbon is holding that valve from completly closing. Remove the valve and clean it or replace it with new. P1335 is a valve position fault the pcm looks at egr valve position and determines that the valve is being commanded to be fully closed, but the valve position is still open....thats how it generates the 1335 code.
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Old 11-29-2010, 12:41 PM
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Do the 2005's have the same butterfly valve in the charged air elbow (like a throttle body on a gasser). This works in tandem with the EGR valve, and resrticts fresh air and forces the truck to take in the exhaust gasses when the EGR valve is open. I believe this is what attributes to the sluggish takeoffs when you have a sticky EGR valve. BTW, I'm not certain of this.

My experience, before I did my full EGR delete, I did a poor man's delete by unplugging and removing the butterfly flap. But I have a 04, and I do npot get a DTC from an unpluged EGR.
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