clatter noise in small rpm range
Thanks for any help in identifying probable causes of a disturbing sound in my 2002 GT coupe. I am hearing what is best described as a 'muffled clatter' sound that seems to come from the drivers side area just in front of the instrument panel when applying gas in the 1500 to 2000 rpm range. This noise is not present during the first hour or so of highway driving, (even when I try to recreate it). However, after shutting down for maybe 10 minutes and restarting for a similar drive...the clatter in that range becomes very apparent (usually going into third gear). Could this be a fuel-flow problem or perhaps a timing issue? The fuel pump has been recently replaced along with the filter. While the noise worries me a lot, I cannot detect any change in engine performance when it happens...Just the attention-grabbing noise. Is that 'cool down' period I mentioned having any effect on how it runs on the next warm-up? (If memory is correct..Seems more apparent during periods of hot weather). Thanks again for any advice. PS..This premium coupe (4.6L V8) is completely stock except for the aftermarket American-made fuel pump.