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1999 5.4L Eddie Bauer Expedition engine seized? Turns counterclockwise but not

(1999 Ford Expedition)
in Concord, NC on June 28, 2014
My son said he drove his vehicle to work and parked it. No noises or anything, just normal. He came out after work to start it and the engine doesn't spin. You can tell the starter is working fine because you can see the crankshaft try to turn but it is like the engine is seized. Trying to turn the engine clockwise does not work. Wanting to make sure it wasn't seized, I was able to turn it one complete revolution counter-clockwise. I actually went a little more, but I didn't want to do much more because I didn't know if it could cause a problem. Being able to do that I would think eliminates hydrostatic lock as the cause. Tried to start it again and still will not turn clockwise. Ideas? Or should I say constructive ideas? Hoping for something obvious I could be missing.

Displaying 1 answer & 5 comments
Popular Answer
on June 28, 2014
Remove the serpentine belt and try it BEFORE you do anything else!!
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on June 28, 2014
I am not sure what you mean. After I remove the serpentine belt what do I try? Seeing if the engine turns clockwise? Are you suggesting that something the belt is driving will not turn clockwise and without the belt the engine may be free to turn??
on June 28, 2014
Meaning = try to start the engine after belt removal.... IF a driven component is locked/locking up... The starter WILL NOT turn the engine! Have seen it a BUNCH on the serpentine belt system!!!...... Hint.... You can turn the engine BACKWARDS in these cases... Because that loosens the belt!!!.... Let me know how it does.....
on June 29, 2014
I should have thought of that because after turning the engine counterclockwise a full turn and then trying to start it, I expected it to at least turn back that one turn before it locked. But you were right. Something driven. All the idler pulleys and everything except the a/c compressor spin freely. I suspect that the a/c pulley should too unless the a/c was turned on it the car. The a/c pulley is not locked but sounds like it is dragging or scraping so that must be it, right? Thank you for making this situation a lot easier to rectify. Do you by any chance know if it is possible, if there is a belt available, to leave the compressor disconnected until it can be fixed?

I see at Autozone that there is actually an a/c compressor bypass pulley that you can bolt on in place of the compressor. But I also see the a/c clutch alone and the a/c clutch bearing. If I can pull the a/c clutch with the compressor still in the engine, will I be able to tell if the problem is the clutch, bearing or compressor?

on June 29, 2014
So, you have cranked the engine and it is ok with the belt removed.... that's is what i thought!!!! ..., there is probably a belt that will work but know way to know what the part # is!!!
Glad your engine isn't locked up!!! .... Have a nice day......
on June 29, 2014
I am really glad it isn't seized too! Thanks a lot for the great advice.
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