[Seahawks85]

Recently while driving in the hwy, my 2013 ram started to jump up and down slightly from 1500 to 4000 rpms, it isnt something I have noticed before. A short time later when making a stop, the brake on the front left started to slightly "give out" almost as if I was slowing down on snow or ice. Noticed the brake issue does this when turning to the right more than slowing down on a straight away or turning left.
I did hit a pretty big pothole the day prior.
Before this happened I fueled up and heard a clunk sound from the front left side.
I also changed out the abs speed sensor on front left.
I havent checked the spark plugs yet.
No play in the front left hub.
Need to check Calipers as well, truck has 100k miles.

Any other ideas, please let me know!

 

[OverThrust]

if you were driving on the highway there's no way that's RPMs went from 1500 to 4,000. now the tachometer could be glitching out and it might look like your RPMs are going up and down but if the truck was really fluctuating in RPMs that would mean that you need to sell your truck and buy another one.

 

[Seahawks85]

The issue has been fixed.

 

[OverThrust]

Please tell the forum what the fix was.

 

[Seahawks85]

You were right, the rpm didnt fluctuate like I stated, however, it would jump.
The issue was just a bearing that was pretty seized, it shot grease onto the wheel sensor ring and that is likely why the glitch occured. The whole time I thought it was just a faulty wheel speed sensor.