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  #1  
Old 12-01-2010, 08:21 PM
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Ostranza Ostranza is offline
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Default New FIPK K&N Filter then check engine light?

So I just got done installing my cold air intake into my 2004 Dodge Ram 5.7L HEMI and then less than 24hrs later I've gotten a check engine light for the EGR valve/solenoid/system fault. The 'zone code says P0403.

I'm assuming its not a coincidence that I get this check engine light soon after this. Anyone else experience an issue like this before? Any thoughts on the EGR? I'm planning on spending 40 buckaroos at autozone for the EGR and replacing it just to see if that fixes problem. If not, back to the stock airbox Also, when I took the temp sensor out of the stock air box and put it in the grommet for the K&N tube I noticed it had quite a bit of oil on it. This normal? Should I clean it? Leave it?

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Old 12-04-2010, 09:36 AM
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Let me start by saying I'm no mechanic but the same exact thing happened to me several years ago when I installed a K&N cai on my Chevy Avalanche. I removed the positive cable from the battery waited a few minutes and then reinstalled it and the trucks computer righted itself and never saw the check engine light again. Hope this works for you if you want to give it a try.
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Old 12-04-2010, 09:58 AM
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Given the failure rate for EGR valves on the Hemi, I wouldn't be surprised if it were the valve itself. That being said, a P0403 is NOT the typical failure code I'm used to seeing so the smart money would be on diagnosing it properly and making sure you don't have a wiring or PCM issue. As for the oil on the IAT sensor, it's normal but you should still clean it off.
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Old 12-04-2010, 11:01 AM
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Clean the IAT sensor and make sure the sensor harness is fully clipped into place.
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Old 12-04-2010, 12:59 PM
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Default

Thanks for the input fellas! Reps! So I decided to go with getting a new EGR just because its only $40 but I also took the EGR pipe off from the throttle body and cleaned it up a bit. It had some serious gunk on the input to the throttle body end so some choke cleaner was employed here (almost 100k miles in exhaust gas build up here I'm sure). My only issue was one of the bolts from the pipe to the EGR valve wouldn't thread in straight leaving a half mil gap from the head of the bolt to the EGR. I'm thinking of using a washer for this one bolt because MAN are those 4 bolts on the EGR hard to get to and wrench on! The two going into the head fought me the last half of the way in. So far check engine light hasn't came back on but it would give me a piece of mind in the long run if I get a washer on the problem bolt.
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