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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 04-04-2010
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I am: Justin Mahoney
Join Date: Feb 2008
Location: Carlisle, PA
Vehicle: 1997 ford ranger xlt
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94 ohv chatter question

my 94 explorer has a bit of a chatter when its at 2500-3000 rpms and thats it, and it seems to me that it will only do that when its warm outside. it runs strong and it has 153xxx miles on it. i was told that it is called catalytic converter chatter from a friend that used to work on explorers alot, and he said that the internals in the converter shrink with causes it to do this. i have no idea about it. Could it be something with the timing chain and if it is, is it a normal type of problem? like timing chain rattle or something. like i said i dont know anything about these things so anything will help. or is it something else that can be fixed. thanks
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Old 04-08-2010
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I am: Alex
Join Date: Jul 2007
Location: Baltimore, Maryland
Vehicle: 1998 Ford Ranger
Drive Type: 4x4
Engine: 4.0
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well a chatter is a lil unspecific so its hard to say. but the ohv motor has poor oil circulation in the heads which causes excessive valve train wear so it will sound like its tapping. maybe thats it?
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