Well guys I posted awhile back about my 88 4.3 OMC cobra and the temp problems i was having/still. This is what I have done,replaced entire impellor assy back flushed,found two pieces of crap in the P.steering cooler,Cleaned it out, installed a new Marine t stat,Back flushed again! Now on muffs will idle forever at temp, In the lake at under 1K builds temp, 1k and above no prob! What am I missing???? Dave.