Cracked flexplate?

[JerryC111]

Motor mounts are bad
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It's rust red, so cats are not clogged
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Are aftermarket motor mounts as bad as other people say on the internet? I plan to keep this truck for about 2 years. Should I get OEMs instead?

 

[SoNic67]

It matters where you live. Heat is mounts' enemy, so in Arizona it might be better to get OE mounts, but in Vermont it won't matter.

 

[239]

Hi folks,
I have a 99 explorer sport 2wd and it's been making this noise for about 3 months. It's coming from the transmission area.

You can hear it in the video.

Things I found out about this noise:

1. It happens when I put it in Drive and keep my foot on brake pedal.

2. As soon as I give it a little gas, the noise's gone.

3. The noise is still there when the truck is moving at a very slow speed (when I only release the brake without stepping on the gas pedal)

4. The noise is barely noticeable when the truck is fully warmed up. It's really loud when it's cold or not fully warmed up.


The transmission shifts fine to me, nothing weird.


I went a shop and the guy there told me it's gonna cost a lot $$$$$ just to take the transmission down to find out the problems.

I don't know anything about cars, and I did some searching online...and I found out other people had similar problems and theirs turned out to be a cracked flexplate.

Can you guys help me diagnose this noise? Is it a cracked flexplate?
And if it is, what's gonna happen if I ignore it? I've been living with this noise for 4 months and nothing bad ever happened except it's pretty annoying.
If no, then what might be the cause?

Thanks

My 2000 ohv makes the EXACT same noise. It almost felt like I took this video for a second. It happens under the same conditions too, while in drive with the brake on and even worse when under load, such as the ac or headlights. I’ve noticed using my BlueDriver, that the noise gets worse as the engine rpm decreases. It starts around 650 rpm. Give it some gas and it vanishes. It’s strange since I’ve hit every part of the exhaust with a rubber mallet and I don’t hear anything unusual, leading me to believe it might be the flexplate.

 

[tbert]

My shield rattle was easy to see,only if you were in exactly the right place and flat of your back or creeper looking straight up. Mine was drivers side toward front of tranny,shields heat from cat.converter(the one turned straight up) from tranny

 

[239]

Mine noise ended up being the belt tensioner hitting the stop point since the belt was too long.