[scout]

Thanks Yogi mine is a 2000 and the bottom shot looks like mine, had a look at removing item 2, there is an exhaust pipe attached to the base so it looks like it may have to be disconected from the exhaust manifold. Are items 2 & 3 able to be removed and cleaned. I will go over all vacuum hoses and check for leaks as advised. Sorry Cougar Girl not able to answer your question.
Thanks