I wouldn't worry...I've driven many 2.3l rangers...all auto's and 5-speeds...they all same to make the same noise that you describe.
New Toy- Stone stock '88 T-bird Sport in need of some TLC
1988 Cougar XR-7- HO/T-5 conversion, cracked block prevented from reaching full potential.
RIP '88 T-Bird....email@example.com...best sleeper in So. Jersey, now it's taking a permanent dirt nap.