When I bought this car, the owner said it needed a spool valve and that was causing the trans to jerk when it shifted. There was a CEL. I didnt notice any jerking, but it did kinda surge between 2nd and 3rd. After driving for awhile, the CEL went out. Maybe I didnt notice it before, but the third day I had the windows down and moticed the trany was whining like the fluid was low. At one point I had only driven a very short time when the completley slipped out of gear and the engine just revved. After the engine slowed if went back into gear. It has that weird procedure where you have to put it in all gears and them turn it off to check the level. It seems to be fine after adding half a quart but the whining is still there.

Any help would be greatly appreciated

Thank in advance!

2004 3.0 5 Sp AT
185K

 

Well, now I know the spool valve has nothing to do with the Trans. I drained the tranny fluid and replaced almost 4 quarts, and replaced the tranny filter. This is the one that bolts into trans under the sir filter. Problem was still there. I ordered a new dual linear solenoid, but when I put the new part on, it caused harsh down shifting. I put the old part back on, and maybe thru just cleaning it and putting it back on, the slipping between 2nd and 3rd has gone away. The whinnig turned out to be the tensioner pulley. And I wanted to let eveyone know about a trick I learned from my dad. If you want to find out what part of your engine is making noise, take a long screw driver and put the tip on that part and the handle up against your ear. Thats how I found out it was the pulley. Had to buy a really long screwdriver...