Sorry I took long to return. The turbine sensor has been replaced and the delay in the shifts when slowing down for a turn has improved. The Knock sensor is still pending, but I have started using high octane fuel (93) and my CEL has not come on again. I'll give it some more time to see if it happens again.
The original owner had the tranny flushed but the filter has not been changed. When the car is cold my shifts are a little bit rough until the tranny is hot and the shifts become much smother. Would this indicate that the filter needs to be replaced, and if so would this be an easy job for be to handle. The dealer said that the filter is up inside the tranny and not easy to remove. Is the dealer lying to me again?
Also, I tried a product called Sea Foam that was recommended to me to remove carbon deposits in the combustion chambers and the exhaust valves. I should have asked in the forum first, but I tried it any way. My RPM's have dropped and the idle is also smother. The response to acceleration has also improved some. The engine is running much better than before. Now my concern is, can this product cause any future problems?
This is the link for this product, please let me know what you think. I was going to try it on my Ford Expedition.