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#1
08-11-2011, 08:42 PM
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faint metal grinding sound coming from engine????
When the truck is in neutral (it might happen when I'm driving too who knows?) and I rev the engine to about 2500 RPM I hear a very faint sound coming from the engine bay. It almost sounds like a chain being dragged across concrete.
A while ago I had a random misfire code and you could sort of feel the misfire but I unplugged the bat and the CEL went away with the misfire. I'm not sure but it might be related. Any ideas on what the problem might be? Also: I read on another site that the timing chain tensioner or something like that is a problem on 4.0s prior to '03. just a possibility i suppose.
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DD: 2002 4x4 off road XLT 4.0 V6 supercab. Mild 1" tbar crank. BFG ATs. Mickey Thompson Classic lock II wheels. Bilstein 5100s. Trail rig: 93 ZJ on 3/4 tons and 37s (ranger gets the axles when I retire the jeep) 
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#2
08-11-2011, 08:43 PM
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Re: faint metal grinding sound coming from engine????
must be timing chain slope
__________________
1999 | Ext. Cab | 4.0 | 4x4 | 4.10's Quote:
Replace Door pin/bushing Repair broken dome light tabs VIDEO OHC Install
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#3
08-11-2011, 08:48 PM
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Re: faint metal grinding sound coming from engine????
I heard somewhere that the 4.0s have a rear timing chain is this true? if so I'm guessing the engine needs to be pulled to change it ?
__________________
DD: 2002 4x4 off road XLT 4.0 V6 supercab. Mild 1" tbar crank. BFG ATs. Mickey Thompson Classic lock II wheels. Bilstein 5100s. Trail rig: 93 ZJ on 3/4 tons and 37s (ranger gets the axles when I retire the jeep)
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#4
08-11-2011, 08:56 PM
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Re: faint metal grinding sound coming from engine????
yeah the one head has the cam in the rear. I have been told its nothing to worry about. Unless the tensioner breaks, nothing will happen.
__________________
1999 | Ext. Cab | 4.0 | 4x4 | 4.10's Quote:
Replace Door pin/bushing Repair broken dome light tabs VIDEO OHC Install
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