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Intermittent grind noise from engine

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Intermittent grind noise from engine

Old 01-28-2019, 04:06 PM
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Default Intermittent grind noise from engine

Just got an 89 Comanche last week 4.0 5 speed 2wd. and while warming it up this morning I heard a nasty sounding grind noise coming from somewhere in the front end (I assume it was engine related sense I was not moving in the driveway) it almost sounded like when you try to start when the engine is already on. Did some searching and came across people talking about their flex plate making noise. I figure Iím gunna check that first but is there anything else I should focus attention on while Iím checking things out? I only notice the sound when idling but not sure whether the noise goes away while driving or if the exhaust drowns it out. And it seems to happen more frequently as it warms up
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Old 01-28-2019, 09:10 PM
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How do you think the internet is going to help? Pop the hood and listen/look or take it to a mech.

Not trying to be a dick but this is silly.
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Old 01-28-2019, 10:42 PM
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Originally Posted by mikebravo View Post
How do you think the internet is going to help? Pop the hood and listen/look or take it to a mech.

Not trying to be a dick but this is silly.
Well obviously, I thought I was pretty transparent in my post, Iím looking for ideas on what to look at not for someone to tell me whatís wrong. If I wanted that I would, like you said ďtake it to a mechĒ Iím just curious if you think this is so ďsillyĒ why youíd waste your time responding? Iím very confident that with or without help Iíll get this fixed but time is valuable to us all and a helpful idea can save a lot of it.
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Old 01-28-2019, 10:45 PM
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Also havenít been able to find much information pertaining to an engine noise that isnít repetitive or have a pattern to it.
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Old 02-02-2019, 10:45 AM
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Have you narrowed down where the sound is coming from? Using a mechanic's stethoscope would help pinpoint the location.

Last edited by Wabrown; 02-02-2019 at 10:50 AM.
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Old 02-04-2019, 03:10 PM
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Originally Posted by Wabrown View Post
Have you narrowed down where the sound is coming from? Using a mechanic's stethoscope would help pinpoint the location.
thanks wabrown!! Iím a go pick me one up. It seems to be somewhere on the bottom end or the flywheel been trying to wait for the weather to clear up. (Driveway work in February sucks in the evergreen state). Worse comes to worse the HO swap will be done a little sooner than planed. I wanted to just swap the head n all that but....
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Old 02-04-2019, 06:26 PM
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I hope all goes well. Sometimes we all need a little "motivation" to pull the trigger on a project. ��
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Old 02-05-2019, 07:34 PM
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It was the flywheel. 3 of the 4 bolts were backed out a little bit and itís now cracked but at least itís not the bottom end. I think if im gunna pull the trans I might as well do a 4x4 swap while Iím at it (was planning on it anyway). From the research Iíve done it seems pretty straightforward too, might flirt with the idea of a NV3550 and find out how much more Iím going to have to go through to get it done than just getting an internal slave ax-15 and a 23 spline NP231
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