[brcidd]

Squeeling and knocking is not good- the engine would not shift to 4th most likely because the RPM's were not enough- because it was fighting internal friction so bad- it was all it could do to stay running- I experienced this same thing once- the engine actually seized- then ran again once cooled down overnight- but knocked bad-- the rod bearings were shot- once I opened it up- loss of oil pressure may be due to a cracked oil cooler line- which was known to happen occasionally- was it leaking? I ended up buying a junkyard engine for $500 (87,000 mile) and installing it myself- sorry to say it but your too late to try to fix this engine- unless it has really low miles......