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Old 08-09-2007, 01:02 PM   #1
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Join Date: Aug 2007
Location: Atlanta, GA
Posts: 10
New here, need opinion...

Hello everyone. My wife and I just bought 2 07 Wranglers She got the 2door black 6spd and I got the 4door Army green Auto.

My question here is:

My Jeep, for instance, I get home from work and turn it off. Wait 5-10 minutes and turn it on again, I get this light annoying knock-knock-knock sound from the engine until I step on the gas, when it goes away. It only happens when the engine is warm.
My wife's Jeep doesnt do that !!!!

I took it to the dealer and they told me that was a normal sound from the emmissions solenoid purge valve. And that in some veh. are louder than others, maybe thats why I dont hear it in my wife's jeep.

Both Jeep have under 1,000 miles on them.

Thanks for your input.

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Old 08-09-2007, 04:59 PM   #2
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Join Date: Feb 2007
Location: Ely, MN 55731 end of the road
Posts: 129
Thumbs up Double welcome to WF

Wow! Two jeeps, good going.
I can't help you with the noise but
keep records of when you took it
to the dealer in the event it is a larger
problem.
There are some folks here that will know
the answer and give you advise.
Again welcome.

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Old 08-09-2007, 11:34 PM   #3
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Join Date: May 2006
Posts: 339
Its called an LDP. Leak detection pump. There have to be a few circumstances to be correct for the action to take place. Its main goal in life is to make sure that there are no leaks in the fuel/emission vac system. This is what alerts the computer to you forgetting to put your fuel cap on.... But it will pressurize the system occaisonally. Normal operation.

Enjoy your Jeep!!!


Joe
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