Heavy vibration at start up?

[JamesgPW]

Hi all, I have a 2019 PW with about 5k miles.

I took it off roading a few days ago, Pioneer Town to Big Bear trail, and had to cross some muddy water. Engine bay got pretty plastered with mud. After, I noticed a few sporadic start ups (not every time or in a row) where the front end of the truck would vibrate very heavily but would instantly smooth out when I put my foot on the brake to put it in drive. I cleaned out the engine bay (covering the alternator) and haven’t had it since on the last four start ups. Any insights or longer term concerns?

 

[Trailmaker]

Idler pulley is not freed up? Or nicked the belt?

 

[JamesgPW]

I’ll have to get my head in there and check. Thank you.

 

[Trailmaker]

Also your at 5k ??have you done your first oil change?

 

[JamesgPW]

Also your at 5k ??have you done your first oil change?

I’m assuming the dealer did a change. I bought it from them at 5k. I’ve had the truck for less than two weeks now.