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Old 03-27-2012, 05:44 PM
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Unhappy 06 4.7L commander

Well My rpms have been hunting a bit and the idle is not as smooth as it used to be, I have 84,000 on the clock with original EGR and PCV And IAC and TPS should I replace all of these and my plugs are due for a change I was thinking champion iridium, all maintenance has been done regularly synthetic oil and such. My manifold is leaking too so that will be fixed also. Where is the egr and pcv on the 4.7?

Also I have this strange whistle any time on gas it comes and goes ideas???

Thanks a bunch Im on the jeep commander forums and thought id come over here

Thanks all

- Connor
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Old 03-27-2012, 05:48 PM
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Re: 06 4.7L commander

Only use oem champion copper plugs on the 4.7
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Old 03-27-2012, 05:48 PM
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Re: 06 4.7L commander

Egr is on the drivers side behind the engine and the pcv is on the oil fill tube
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Old 03-27-2012, 06:44 PM
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Re: 06 4.7L commander

Ok Thanks
but my pcv isnt there I think its on the back of the engine
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Old 03-28-2012, 10:22 PM
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Re: 06 4.7L commander

open your hood and inspect the emissions lable for sparkplug recommendation... I would suggest running an oem spec plug and nothing else. which is exactly as stated above, a champion copper plugs.

I would start with your throttle position sensor, pcv valve (unrelated to concerns, simply due to mileage) and your spark plugs (also unrelated to your concern). Throttle position sensors on the 4.7l are CRAZY common for failing in this way, very rarely do they actually throw a code.
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Old 03-29-2012, 09:22 AM
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Re: 06 4.7L commander

Thanks Man!
Ill do this soon
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