04 EGR delete, CEL on - Ford Powerstroke Diesel Forum
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post #1 of 22 Old 11-24-2010, 07:54 AM Thread Starter
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04 EGR delete, CEL on

Hey Fellas,

Long time no post. I have searched for 5 hours or so on here but the search function seems to bring EVERYTHING up.

On to the problem:

I have an 04 250. Blew the 3rd egr cooler (both egr and oil coolers replaced previously) a couple months back. I figured screw it, bought a delete kit.

Took me probably 8-10 hours (first time working on this truck) but got everything in and running great. CEL came on after about 7-10 key on-off cycles.

I left all the egr valve/throttle body/other crap connected and working. I have a hypertech tuner. Tuner will not pick up on the code throwing the CEL.

I also just received my tag renewal and good ol' Kalifornistan is making me smog my truck this year.

Any help is appreciated.
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post #2 of 22 Old 11-24-2010, 08:05 AM
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You're throwing a cel because you Hypertuner can't turn off the egr valve. Once removed it'll throw a code. Those of us who use an SCT with custom tunes have the tuner turn the egr valve off, thus not throwing anymore cels...

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post #3 of 22 Old 11-24-2010, 08:07 AM
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Never mind, didn't read the part about leaving the egr valve in place. My guess now is it's unrelated to the delete kit...

2012 F-350 SRW King Ranch
SOLD - 2004 Lariat F-250 4x4
6.5 Pro Comp Lift W/ Fox Shocks, DeeZee Tool Box, 08 Diff. Cover, 37x13.5/20's Pro Comps, Zoodad Mod, SCT w/custom tunes, 4 in EX., AFE Intake, ARP, Recon Lights, High Idle Mod, RCD EGR Delete, Fumoto Valve, Oil Bypass Kit, 03 Turbo, Yukon Gears, Farmboy Stage II Traction Bars, Dieselsite Coolant Kit, Amsoil, HIDS, Edge Insight CS, PHP FICM
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post #4 of 22 Old 11-24-2010, 08:17 AM Thread Starter
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Whats weird is that nothing changed other than the egr delete. The CEL was not on before, only after. Tuner on or off it does not matter.

The engine is a transplant from an 05 truck...
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post #5 of 22 Old 11-24-2010, 08:18 AM Thread Starter
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Has anyone had the problem of a hypertech not reading codes?
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post #6 of 22 Old 11-24-2010, 08:20 AM
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I had blocked off my exhaust to EGR cooler as a test. Threw a code that showed "Low EGR flow". Might be that. Unplug the EGR valve, and disconnect the batteries to clear the codes, and start over. See what comes back.


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post #7 of 22 Old 11-24-2010, 08:22 AM Thread Starter
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I have done that 3 or 4 times, always comes back.

Any other ways to read codes since my junk hypertech wont?
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post #8 of 22 Old 11-24-2010, 08:22 AM
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oops, you have an 05 in the truck now. You might need to get an SCT with a program that deletes the eGR system. Ignore my previous post. Thought you had an 04 set up.


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post #9 of 22 Old 11-24-2010, 08:23 AM
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I use my Scangauge II. Stop by an auto parts store and see what they pick up.


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post #10 of 22 Old 11-24-2010, 08:26 AM Thread Starter
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The loom and harness are original to the truck...I would think any additional sensors on later engines would have no pig tails to plug in?

Do all the trucks have the intake temp sensor on the driver side of the intake manifold?

I am thinking about adding resistors to make it seem like the computer see's the intake temp rise...worked on my dad's camry
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