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Old 02-21-2021, 08:20 PM   #1
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Default 1995 XE V6 idle rattle noise and what I've done

I've searched here and found a few people with similar problems, but nothing exact.
I recently had the timing belt and water pump replaced along with the other seals. At the same time I had a complete tune up (plugs, wires, filters, cap and rotor). Normally I would have done this work myself but time is limited.
Anyways, after about a week of driving I started getting a rattle/grinding noise at idle (the idle is slightly rougher) . This always happens when truck is warm. The first thing I did was remove each belt to eliminate one of the pulleys and that was not the problem. At that point I assumed the water pump and I took the truck back to the shop that did the work. The shop replaced the water pump and timing belt tensioner and the noise is still here. Keep in mind that the truck is running fantastic. The clutch seems to make no difference when the noise occurs. I'm stumped at this point. The next option is the harmonic balancer... Again this noise is only at idle.
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Old 02-21-2021, 09:27 PM   #2
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I would buy a mechanic’s stethoscope to help pinpoint the problem...

Those stethoscopes are VERY sensitive to noise. I believe it would help you find what/where this rattle only at idle is coming from.

I first bought my stethoscope back in 1992 when my water pump bearing(didn’t know it at the time) on my ‘89 HB let go. I could hear the noise. Couldn’t pinpoint it until I got that stethoscope. Been one of my truck’s best friends ever since.
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Old 02-21-2021, 09:36 PM   #3
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Sure hope it is not the new timing set ...
What brand parts were used?


Was the oil and filter changed?

Also check your oil pressure when warm.
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Old 02-21-2021, 09:38 PM   #4
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Did you replace the timing tensioner idler? I've had that make noises when forgotten.
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Old 02-22-2021, 12:41 AM   #5
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After I took my truck back to the shop the water pump was replaced along with the tensioner. I originally thought the water pump was the noise. Also it's a gates timing belt kit. I even stopped by the shop while it was apart this time and everything looked and felt good. I'm going to buy a stethoscope tomorrow after work. So does anyone think the harmonic balancer could cause this type of issue.
Some also asked about the oil...I changed it last week.
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Old 02-22-2021, 01:52 AM   #6
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Harmonic balancer has to have serious issues if it is rattling.



Maybe look at your cat heat shields too. I've had those rattle.
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Old 02-22-2021, 03:50 AM   #7
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If the HB was removed improperly, it easily could be damaged. I'd expect the unbalance to be apparent at most RPMs, though.
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Old 02-22-2021, 04:01 AM   #8
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I appreciate all the insight. Tomorrow I'm driving from Portland to Corvallis (160 miles round-trip) so hopefully I'll be able to get a good listen. I'll keep this updated
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Old 04-05-2021, 02:51 AM   #9
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Hey everyone, My truck is still making the noise when warm and at idle. I pulled all the plugs today and they all looked fine.
I'm beginning to think it could be oil related. I may drain the oil and fill with 20w50 and see if low oil pressure is the issue. I'm running out of ideas. The stethoscope didn't reveal anything
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