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 RPM related grinding noise after swap.. any idea's
#237393
07/07/03 06:13 AM
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Joined: Mar 2002
Posts: 108
OP
Wheeler
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This is a strange problem, and I hope some one can help me. Here are the details,
* It's RMP related, higher the RPM higher the higher of pitch of the grind.
* It's is more noticable when the engine is cold but less so after 10 minutes of driving
* The noise is coming from the right side (I sit in the drivers seat of course) of the truck.
* The noise can be noticed at any time when doing a U-Turn, EG. more pressure on the right side.
* A soft bump can create the noise but hard bumps do not.
* Jump up and down on the front bumper while the truck is running, but not moving and I could not recreate the noise.
Thanks in advance....
James
<small>[ July 08, 2003, 10:06 AM: Message edited by: coldrain ]</small>
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Re: RPM related grinding noise after swap.. any idea's
#237394
07/07/03 06:25 AM
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Joined: Dec 1999
Posts: 643
Rock Warrior
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This sounds weird ... but I swear it's worth the time to check in to.
I had a somewhat similar issue once where I got a noticeable grind at right about 2,000 rpm. It tended to go away after 2k, but it always happened right at 2k.
Anyway ... after much troubleshooting, the issue turned out to be a skid plate that had gotten jammed up and was touching in the wrong place. Apparently 2,000 rpm was just the right harmonic balance to have the grinding effect.
I bent out the skid plate, and the problem immediately went away.
Definitely worth looking in to ...
'94 HONDA Passport (very similar to the Rodeo -- too similar for mere coincidence!!!)
DOR lift, 3" Body lift, 33" BFG M/Ts, Receiver mounted winch, ARB rear air locker, Tera Flex Low, Garmin Emap GPS, FRS/CB radio, as many toys as I can find!
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Re: RPM related grinding noise after swap.. any idea's
#237395
07/07/03 06:55 AM
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Anonymous
Unregistered
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Stones under a skidplate/bashplate?
Mine has a habit of after ploghing through shingle rivers of getting a few stones between the gearbox/transfer case housing and bashplate.
It seemed to be RPM realted, but really it was just the vibration grinding the stones i.e. engine vibration was RPM related.
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Re: RPM related grinding noise after swap.. any idea's
#237396
07/07/03 07:40 PM
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Joined: Dec 1999
Posts: 2,394
Isuzu Moderator
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How about you tell us what was "swapped"? Engine, solid axle, hubs, transmission, ???
--Dan
<small>[ July 07, 2003, 02:41 PM: Message edited by: houlster ]</small>
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Re: RPM related grinding noise after swap.. any idea's
#237397
07/07/03 10:05 PM
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Joined: Mar 2002
Posts: 108
OP
Wheeler
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</font><blockquote><font size="1" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">quote:</font><hr /><font size="2" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans"> How about you tell us what was "swapped"? </font><hr /></blockquote><font size="2" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">Opps, That would be a good idea. The 2.3L was pulled and a 2.6L was put in. The transmission was left in during the swap. As this was first try at this, it took a lot longer than I wanted. It took just over one month.
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