I'd put a dollar on it being the outrageously loud evaporative emissions
valve Chrysler chooses to use...
When it works it sounds like a pissed off gnome hitting your fender with
a small rubber hammer 1-3 times per second. If for some reason the unit
is pushed over (its on a rubber mount) onto the fender directly it'll be
much more pronounced. If you suspect thats it, you can easily feel the
valve cycle with your hands and often placing your hand on the valve
will greatly silence the "clunk".
Chrysler was 'fixing' these with (iirc) a softer rubber isolator for a
Suddenly, without warning, Mike Simmons exclaimed (7/31/2007 7:50 PM):
yup, light came back on today. Does it tell us anything, that the light
didn't come back on until I'd been to the gas station? It was off when
I stopped. Got gas, light came on when I turned the truck back on.
As has been the case for some time, there was no release of pressure
when I removed the gas tank.
And before anybody mentions it, I replaced the gas cap fairly recently.
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