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  #25  
Old 08-03-2014, 09:13 AM
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Re: Odd sound from engine.

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Originally Posted by Frango100 View Post
The fender mounted purge solenoid valve should not make any sound directly after startup. The PCM will pulse it after warming up and indeed that can make a ticking noise. They tried to isolate it a bit with a rubber extension piece, which partly worked.

Ahhh... but it does. You not only get the lifter type ticking noise, you can feel it when you put your fingers on the valve. It's the check ball. It does it on a cold start up then gradually disappears as the engine warms up a bit.

If the OP is reporting this on a 2000, then they did nothing to isolate the sound at least through the 2002 MY.
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  #26  
Old 08-03-2014, 10:47 AM
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Re: Odd sound from engine.

Maybe the programming during different years are different, but the purge solenoid valve is suppost to work the whole time, after warming up. The is a TSB regarding the solenoid tick to install the isolator rubber, but probably would only be performed when a customer complained about it.
On my jeep i do not hear a change in the ticking, its always the same as soon as it starts ticking.
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  #27  
Old 08-03-2014, 11:03 AM
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Re: Odd sound from engine.

Mine didn't tick every time but it was a very frequent occurrence. Even more so in colder weather. It's also quite loud and be heard a distance from the vehicle.

It's just a suggestion for the OP to check it. If it turns out to be the case for him, it's far easier to deal with than a lifter problem.
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