Crank snap
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New User
Joined: Jan 2005
Posts: 20
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Crank snap
Hello I have a 97 explorer xlt with a 4.0l my wife was driving it to work and it just shut off got to looking and found that the main pulley was laying in the belt.
The crank broke right out of the motor. Has anyone ever seen this before?
The crank broke right out of the motor. Has anyone ever seen this before?
Senior User
Joined: Nov 2003
Posts: 163
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From: Bucks County, PA
I have seen the harmonic balancer come apart, this is not uncommon, are you sure the crank shaft broke and not the balancer that the pulley is attached. Take a close look, if it is the crank thats rare. Good luck.
Elder User
Joined: Jan 2004
Posts: 561
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From: houston
Don is right, take a closer look at the pulley. But, cranks do break. It has never happened to me but I have seen it for myself. A friend of mine had one break on his van. He used this van for his delivery business. He was not a wild driver so I know this van was never abused. Sometimes things just happen. Good luck.
Senior User
Joined: Jul 2004
Posts: 358
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From: Brisbane Australia
Originally Posted by Cylinder Head
Hello I have a 97 explorer xlt with a 4.0l my wife was driving it to work and it just shut off got to looking and found that the main pulley was laying in the belt.
The crank broke right out of the motor. Has anyone ever seen this before?
The crank broke right out of the motor. Has anyone ever seen this before?
Man, don't let the wife drive your truck!!
Somebody probably used a rattle gun on it sometime.
Posting Guru
Joined: Apr 2005
Posts: 1,035
Likes: 2
From: duncan oklahoma
just rebuilt an 4.0 sohc motor for the same problem.it took out 9 of the 12 valves. cost the guy 3000$ to fix.the crank looked like the metalwas a poor casting . sorry about the bad luck.
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Posting Guru
Joined: Aug 2000
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I have seen numerous threads about broken cranks in the 4.0, so it's more common than it should be. They always snap directly behind the harmonic balancer.
Just curious, how many miles on it? OHV or SOHC?
Just curious, how many miles on it? OHV or SOHC?
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