4.0 engine chirp

[MAC_FR]

Alright, so back story, yesterday I Seafoamed my and installed new autolite spark plugs, when I Seafoamed it almost no smoke came out (guess my engine was clean) so I took it for a dive like their site suggested, and when I got home there was NO chirp at all, my truck has never had a chirp.

So after the engine cooled off I installed the spark plugs, I got the spark plugs all done, started the truck, and now it has a chirp, thinking it just needed the cobwebs blown out I took it on a 30 miles drive, when I got home, it still had the chirp.

So this morning I go out and start the truck, and the chirp was gone, till the engine got warm and the chirp came back....

From searching it sounds like the Camshaft position Synchronizer, but I also read they don't often go bad on 4.0's?

So that's why I'm asking, is there ANYTHING else that could be causing the chirp back by the bell housing?

Also, my engine has 192K on it, how much longer do I have before my engine just kicks the bucket from low compression?

 

[DB_1]

From searching it sounds like the Camshaft position Synchronizer, but I also read they don't often go bad on 4.0's?

It most likely is the CPS from the noise you are describing...think of that noise as it's way of telling you it's going bad.

Had mine replaced back in 07' by a mechanic...mine is a major PITA to replace because it's located in the back of the engine against the firewall. The mechanic said good thing I replaced it now as the noise was the bearing on the CPS was just about toast.

 

[MAC_FR]

Where would be a good place to get a new one?

I checked Rockauto, they don't have any.

 

[MAC_FR]

Checked Rockauto again, and I was looking in the wrong spot, they do have them, but they have a 132mm Shaft and a 123mm Shaft, witch one do I need?

1997 4.0L auto trans 4x4 xlt if it matters.

 

[DB_1]

I have the exact same truck as yours. Not sure which you need as I had a shop do it because I knew it's not in a fun spot to get to. I know you will need a special to to install it. I'd search some more threads in the "under the hood section" to find more info.

 

[MAC_FR]

Well you learn something new everyday!

http://www.explorerforum.com/forums/showthread.php?t=233415

I'm really starting to hate Ford, with their hard to find parts/info......