4 low problem

I test drove a 2012 v6 trd off road recently and was wondering if this is normal. I put it in 4 lo and the engine would rev up quite a bit before it would start moving like something was slipping or not fully engaged. I wasn't beeping. Anyone know if that is normal in 4 lo or what could be causing it? It also had a some what loud ticking noise coming from the engine, but it seems like that is normal? Thanks for any input.

 

The beeping means it wasnt engaged completely. I assume it was auto. Stopping the vehicle is a must.

 

It wasn't beeping. Yes auto. Put it in neutral and went from 4 hi to 4 lo.

 

I misread. It shouldnt rev up once engaged. It will just feel like its in super low gear once in 4 low.

 

Super low gear = revving.

 

So it's normal that with the truck stopped when I press the gas the engine will rev up, then jerk like it grabs or engages and start moving?

 

A little bit, it always feels like throttle is slightly delayed in 4lo.
Or transfer case hadn't completed shift before you gave it.

 

You are posting 2 different things here. Once 4 low is engaged, the engine doesnt just rev with no truck movement.

Now, when its in 4 low, its going to be more jerky than 4 high. Once 4 low is engaged, then you accelerate, it will want to lurch because its in low gear.

 

That's exactly what it was doing, revving before it would move. I thought maybe it wasn't engaged all the way, but there was no beeping and I could definitely tell it was in low.

 

Thanks hopefully that's it. I'll have to drive another one in 4 lo to see I guess.